SKU: FETHS-48051-G1
Official datasheet
Sources
The manufacturer's document "ETHOS-SpecSheet-1.4-BatteryCB.pdf" prints FETHS-48051-G1 on PDF page 1.
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: ETHOS-SpecSheet-1.4-BatteryCB.pdf, PDF page 1
Documented
Chemistry: LiFePO4
Official product page
Sources
Manufacturer specification.
Official product page: BigBattery FETHS-48051-G1 product identity Checked Sep 15, 2026
Location: Primary product heading and explicit model/SKU field
Documented
Cell configuration: 16S
Official datasheet
Sources
Printed as "16S" in BigBattery's ETHOS spec sheet (version 1.4, last revision 12/02/2025).
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Spec sheet PDF page 2, Battery Specifications, ETHOS Singular Module table, Cell Configuration row (SKU FETHS-48051-G1)
Documented
Nominal energy: 5.12 kWh
Manufacturer source conflict
BigBattery's FETHS-48051-G1 product page prints 10.24 kWh, the figure of the two-module kit K0949. The ETHOS specification sheet's singular module table prints its kWh Capacity row as "5.12V" (a unit misprint, so not used).
Source user manual
Sources
Printed as "(x1) 48V 5.12kWh ETHOS Battery Module" under "Included With SKU: FETHS-48051-G1" in BigBattery's 48V ETHOS User Manual, Version 1.5 (archived copy); the same manual prints "(x2) 5.12kWh ETHOS Battery Module [FETHS-48051-G1]" in its 10kWh system diagram (page 24, printed page 22). Revised on October 4, 2026: the earlier 10.24 kWh is the figure BigBattery prints for the two-module kit K0949.
10.24 kWh
Manufacturer specification.
Official product page: BigBattery FETHS-48051-G1 product identity Checked Sep 15, 2026
Source user manual: BigBattery 48V ETHOS User Manual (Version 1.5, 2/28/2024; earlier edition; Internet Archive copy captured 8 October 2024) Rev VERSION 1.5 · February 2024 · Checked Oct 1, 2026 · Earlier document
Location: Page 10 (printed page 8), section 4.1 ETHOS Battery Module, Included With SKU: FETHS-48051-G1
Documented
Nominal voltage: 51.2 V
Source user manual
Sources
Printed as "Each single battery module is 51.2V and 100Ah" in BigBattery's 48V ETHOS User Manual, Version 1.5 (archived copy). The ETHOS specification sheet's singular module table and the product page print the same 51.2V. Re-cited on October 4, 2026; the value is unchanged.
Source user manual: BigBattery 48V ETHOS User Manual (Version 1.5, 2/28/2024; earlier edition; Internet Archive copy captured 8 October 2024) Rev VERSION 1.5 · February 2024 · Checked Oct 1, 2026 · Earlier document
Location: Page 9 (printed page 7), section 3.1 Product Description
Documented
Rated capacity: 100 Ah
Manufacturer source conflict
BigBattery's user manual and specification sheet print 100Ah for the FETHS-48051-G1 module, while the FETHS-48051-G1 product page prints 200 Ah, the figure of the two-module kit K0949.
Source user manual
Sources
Printed as "Each single battery module is 51.2V and 100Ah" in BigBattery's 48V ETHOS User Manual, Version 1.5 (archived copy). The ETHOS specification sheet's singular module table prints "100 Ah" for SKU FETHS-48051-G1. Revised on October 4, 2026: the earlier 200 Ah is the figure BigBattery prints for the two-module kit K0949.
200 Ah
Manufacturer specification.
Official product page: BigBattery FETHS-48051-G1 product identity Checked Sep 15, 2026
Source user manual: BigBattery 48V ETHOS User Manual (Version 1.5, 2/28/2024; earlier edition; Internet Archive copy captured 8 October 2024) Rev VERSION 1.5 · February 2024 · Checked Oct 1, 2026 · Earlier document
Location: Page 9 (printed page 7), section 3.1 Product Description
Documented
Continuous discharge current: 100 A
Manufacturer source conflict
BigBattery's ETHOS specification sheet prints 100A for the FETHS-48051-G1 module, while the FETHS-48051-G1 product page prints 200A, the figure of the two-module kit K0949.
Official datasheet
Sources
Printed as "100A" against "Max Continuous Discharge Current" in BigBattery's ETHOS specification sheet, page 2, Battery Specifications, ETHOS Singular Module, SKU FETHS-48051-G1 (read from the rendered page). The user manual prints this row only for the kits. Revised on October 4, 2026: the earlier value is the figure BigBattery prints for the two-module kit K0949.
200 A
Manufacturer specification.
Official product page: BigBattery FETHS-48051-G1 product identity Checked Sep 15, 2026
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Page 2, Battery Specifications, ETHOS Singular Module, Max Continuous Discharge Current
Documented
Maximum discharge current: 100 A
Manufacturer source conflict
BigBattery's ETHOS specification sheet prints 100A for the FETHS-48051-G1 module, while the FETHS-48051-G1 product page prints 200A, the figure of the two-module kit K0949.
Official datasheet
Sources
Printed as "100A" against "Max Continuous Discharge Current" in BigBattery's ETHOS specification sheet, page 2, Battery Specifications, ETHOS Singular Module, SKU FETHS-48051-G1 (read from the rendered page). The user manual prints this row only for the kits. Revised on October 4, 2026: the earlier value is the figure BigBattery prints for the two-module kit K0949.
200 A
BigBattery publishes "200A" against "Max Continuous Discharge Current" on its own product page for FETHS-48051-G1.
Official product page: BigBattery FETHS-48051-G1: BigBattery product page (September 20 capture) Checked Sep 19, 2026 · Earlier document
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Page 2, Battery Specifications, ETHOS Singular Module, Max Continuous Discharge Current
Documented
Maximum charge current: 200 A
Official datasheet
Sources
Printed as "200A" against "Max Charge Current" in the ETHOS specification sheet's singular module table for SKU FETHS-48051-G1 (read from the rendered page). The user manual prints this row only for the kits. Re-cited on October 4, 2026; the value is unchanged.
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Page 2, Battery Specifications, ETHOS Singular Module, Max Charge Current
Documented

1 spec not documented yet: usable energyHelp fill in ›

All specs31

Chemistry: LiFePO4
Official product page
Sources
Manufacturer specification.
Official product page: BigBattery FETHS-48051-G1 product identity Checked Sep 15, 2026
Location: Primary product heading and explicit model/SKU field
Documented
Cell configuration: 16S
Official datasheet
Sources
Printed as "16S" in BigBattery's ETHOS spec sheet (version 1.4, last revision 12/02/2025).
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Spec sheet PDF page 2, Battery Specifications, ETHOS Singular Module table, Cell Configuration row (SKU FETHS-48051-G1)
Documented
Nominal energy: 5.12 kWh
Manufacturer source conflict
BigBattery's FETHS-48051-G1 product page prints 10.24 kWh, the figure of the two-module kit K0949. The ETHOS specification sheet's singular module table prints its kWh Capacity row as "5.12V" (a unit misprint, so not used).
Source user manual
Sources
Printed as "(x1) 48V 5.12kWh ETHOS Battery Module" under "Included With SKU: FETHS-48051-G1" in BigBattery's 48V ETHOS User Manual, Version 1.5 (archived copy); the same manual prints "(x2) 5.12kWh ETHOS Battery Module [FETHS-48051-G1]" in its 10kWh system diagram (page 24, printed page 22). Revised on October 4, 2026: the earlier 10.24 kWh is the figure BigBattery prints for the two-module kit K0949.
10.24 kWh
Manufacturer specification.
Official product page: BigBattery FETHS-48051-G1 product identity Checked Sep 15, 2026
Source user manual: BigBattery 48V ETHOS User Manual (Version 1.5, 2/28/2024; earlier edition; Internet Archive copy captured 8 October 2024) Rev VERSION 1.5 · February 2024 · Checked Oct 1, 2026 · Earlier document
Location: Page 10 (printed page 8), section 4.1 ETHOS Battery Module, Included With SKU: FETHS-48051-G1
Documented
Usable energy: Not documented
Nominal voltage: 51.2 V
Source user manual
Sources
Printed as "Each single battery module is 51.2V and 100Ah" in BigBattery's 48V ETHOS User Manual, Version 1.5 (archived copy). The ETHOS specification sheet's singular module table and the product page print the same 51.2V. Re-cited on October 4, 2026; the value is unchanged.
Source user manual: BigBattery 48V ETHOS User Manual (Version 1.5, 2/28/2024; earlier edition; Internet Archive copy captured 8 October 2024) Rev VERSION 1.5 · February 2024 · Checked Oct 1, 2026 · Earlier document
Location: Page 9 (printed page 7), section 3.1 Product Description
Documented
Rated capacity: 100 Ah
Manufacturer source conflict
BigBattery's user manual and specification sheet print 100Ah for the FETHS-48051-G1 module, while the FETHS-48051-G1 product page prints 200 Ah, the figure of the two-module kit K0949.
Source user manual
Sources
Printed as "Each single battery module is 51.2V and 100Ah" in BigBattery's 48V ETHOS User Manual, Version 1.5 (archived copy). The ETHOS specification sheet's singular module table prints "100 Ah" for SKU FETHS-48051-G1. Revised on October 4, 2026: the earlier 200 Ah is the figure BigBattery prints for the two-module kit K0949.
200 Ah
Manufacturer specification.
Official product page: BigBattery FETHS-48051-G1 product identity Checked Sep 15, 2026
Source user manual: BigBattery 48V ETHOS User Manual (Version 1.5, 2/28/2024; earlier edition; Internet Archive copy captured 8 October 2024) Rev VERSION 1.5 · February 2024 · Checked Oct 1, 2026 · Earlier document
Location: Page 9 (printed page 7), section 3.1 Product Description
Documented
Continuous discharge current: 100 A
Manufacturer source conflict
BigBattery's ETHOS specification sheet prints 100A for the FETHS-48051-G1 module, while the FETHS-48051-G1 product page prints 200A, the figure of the two-module kit K0949.
Official datasheet
Sources
Printed as "100A" against "Max Continuous Discharge Current" in BigBattery's ETHOS specification sheet, page 2, Battery Specifications, ETHOS Singular Module, SKU FETHS-48051-G1 (read from the rendered page). The user manual prints this row only for the kits. Revised on October 4, 2026: the earlier value is the figure BigBattery prints for the two-module kit K0949.
200 A
Manufacturer specification.
Official product page: BigBattery FETHS-48051-G1 product identity Checked Sep 15, 2026
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Page 2, Battery Specifications, ETHOS Singular Module, Max Continuous Discharge Current
Documented
Maximum discharge current: 100 A
Manufacturer source conflict
BigBattery's ETHOS specification sheet prints 100A for the FETHS-48051-G1 module, while the FETHS-48051-G1 product page prints 200A, the figure of the two-module kit K0949.
Official datasheet
Sources
Printed as "100A" against "Max Continuous Discharge Current" in BigBattery's ETHOS specification sheet, page 2, Battery Specifications, ETHOS Singular Module, SKU FETHS-48051-G1 (read from the rendered page). The user manual prints this row only for the kits. Revised on October 4, 2026: the earlier value is the figure BigBattery prints for the two-module kit K0949.
200 A
BigBattery publishes "200A" against "Max Continuous Discharge Current" on its own product page for FETHS-48051-G1.
Official product page: BigBattery FETHS-48051-G1: BigBattery product page (September 20 capture) Checked Sep 19, 2026 · Earlier document
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Page 2, Battery Specifications, ETHOS Singular Module, Max Continuous Discharge Current
Documented
Maximum charge current: 200 A
Official datasheet
Sources
Printed as "200A" against "Max Charge Current" in the ETHOS specification sheet's singular module table for SKU FETHS-48051-G1 (read from the rendered page). The user manual prints this row only for the kits. Re-cited on October 4, 2026; the value is unchanged.
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Page 2, Battery Specifications, ETHOS Singular Module, Max Charge Current
Documented
Peak discharge current: 300 A
Official datasheet
Sources
Printed as "300A (Max 5 seconds)" in BigBattery's ETHOS spec sheet (version 1.4, last revision 12/02/2025). A peak lasting at most 5 seconds.
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Spec sheet PDF page 2, Battery Specifications, ETHOS Singular Module table, Max Discharge Peak Current row (SKU FETHS-48051-G1)
Documented
Operating voltage range: 48 to 57 V
Official datasheet
Sources
Printed as "48V - 57V" in BigBattery's ETHOS spec sheet (version 1.4, last revision 12/02/2025).
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Spec sheet PDF page 2, Battery Specifications, ETHOS Singular Module table, Operating Voltage Range row (SKU FETHS-48051-G1)
Documented
Recommended charge voltage: 55.6 to 57 V
Official datasheet
Sources
Printed as "55.6V - 57V" in BigBattery's ETHOS spec sheet (version 1.4, last revision 12/02/2025).
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Spec sheet PDF page 2, Battery Specifications, ETHOS Singular Module table, Charging Voltage Range row (SKU FETHS-48051-G1)
Documented
Maximum charge voltage: 58.8 V
Official user manual
Sources
Printed as "Do not charge with a charge voltage above 58.8V." in the BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf (page 6, 2. Safety Instructions). Printed as a safety limit.
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: PDF page 6, 2. Safety Instructions
Documented

Lifetime production

Not published

Published claims and calculations are not independently tested lifetime output.

Battery weight: 54.8 kg121 lb converted
Manufacturer source conflict
BigBattery's ETHOS specification sheet prints 121 lbs (54.8 kg) for the FETHS-48051-G1 module, while the FETHS-48051-G1 product page prints 123.8 kg, the figure of the two-module kit K0949.
Official datasheet
Sources
Printed as "121 lbs (54.8 kg)" against "Weight" in BigBattery's ETHOS specification sheet, page 2, Battery Specifications, ETHOS Singular Module, SKU FETHS-48051-G1 (read from the rendered page). The user manual prints this row only for the kits. Revised on October 4, 2026: the earlier value is the figure BigBattery prints for the two-module kit K0949.
123.8 kg / 272.93 lb
Manufacturer specification.
Official product page: BigBattery FETHS-48051-G1 product identity Checked Sep 15, 2026
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Page 2, Battery Specifications, ETHOS Singular Module, Weight
Documented
Dimensions: 46.98 L
Calculated: Enclosure volume: W × H × D ÷ 1,000,000
Manufacturer source conflict
BigBattery's ETHOS specification sheet prints 170 x 674 x 410 mm for the FETHS-48051-G1 module, while the FETHS-48051-G1 product page prints 170 x 674 x 1100 mm, the figure of the two-module kit K0949.
W: 674 × H: 410 × D: 170 mmW: 26.5 × H: 16.1 × D: 6.69 in convertedOfficial datasheet
Sources
Printed as "6.7 x 26.5 x 16.14 in (170 x 674 x 410mm)" against "Dimensions (DxWxH)" in BigBattery's ETHOS specification sheet, page 2, Battery Specifications, ETHOS Singular Module, SKU FETHS-48051-G1 (read from the rendered page). The user manual prints this row only for the kits. Revised on October 4, 2026: the earlier value is the figure BigBattery prints for the two-module kit K0949.
170 D × 674 W × 1,100 H mm
Manufacturer W/H/D values; installation clearances excluded.
Official product page: BigBattery FETHS-48051-G1 product identity Checked Sep 15, 2026
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Page 2, Battery Specifications, ETHOS Singular Module, Dimensions (DxWxH)
Calculated
Terminals: Amphenol UL ESS connector
Official user manual
Sources
Printed as "The battery Utilizes standardized Amphenol UL ESS Connector" in the BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf (page 8, 3.1 Product Description).
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: PDF page 8, 3.1 Product Description
Documented
Enclosure rating: IP65
Official datasheet
Sources
Printed as "IP65 / NEMA 4X" in BigBattery's ETHOS spec sheet (version 1.4, last revision 12/02/2025). The sheet also prints NEMA 4X beside the IP rating.
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Spec sheet PDF page 2, Battery Specifications, ETHOS Singular Module table, Protection Rating row (SKU FETHS-48051-G1)
Documented

Communications: CANBus / RS485
Official datasheet
Sources
Printed as "CANBus / RS485" in BigBattery's ETHOS spec sheet (version 1.4, last revision 12/02/2025).
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Spec sheet PDF page 2, Battery Specifications, ETHOS Singular Module table, Communications row (SKU FETHS-48051-G1)
Documented
Storage temperature: -20 to 45 °C-4 to 113 °F converted
Official datasheet
Sources
Printed as "-4°F - 113°F (-20°C - 45°C) Max 6 months)" in BigBattery's ETHOS spec sheet (version 1.4, last revision 12/02/2025). The range applies at a state of charge above 50% for at most 6 months.
Official datasheet: ETHOS-SpecSheet-1.4-BatteryCB.pdf Checked Sep 19, 2026 · Earlier document
Location: Spec sheet PDF page 2, Battery Specifications, ETHOS Singular Module table, Storage Temperature Range (SoC >50%) row (SKU FETHS-48051-G1)
Documented
Charging temperature: 0 to 45 °C32 to 113 °F converted
Official product page
Sources
BigBattery publishes "32°F – 113°F (0°C – 45°C)" against "Charge Temperature Range" on its own product page for FETHS-48051-G1.
Official product page: BigBattery FETHS-48051-G1: BigBattery product page (September 20 capture) Checked Sep 19, 2026 · Earlier document
Location: Product page specification row "Charge Temperature Range"
Documented
Discharging temperature: -20 to 60 °C-4 to 140 °F converted
Official product page
Sources
BigBattery publishes "-4°F – 140°F (-20°C – 60°C)" against "Discharge Temperature Range" on its own product page for FETHS-48051-G1.
Official product page: BigBattery FETHS-48051-G1: BigBattery product page (September 20 capture) Checked Sep 19, 2026 · Earlier document
Location: Product page specification row "Discharge Temperature Range"
Documented
Grounding (manual): Optional grounding connection point; grounding cables are not included
Official user manual
Sources
Printed as "we offer an optional grounding connection point"; "grounding cables are not included with the ETHOS ESS" in the BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf (page 35, 6.8 Grounding (Optional)).
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: PDF page 35, 6.8 Grounding (Optional)
Documented
Installation clearances (manual): Bottom base installed on the ground about 30 mm (1.2 in) from the wall
Official user manual
Sources
Printed as "Install the bottom base on the ground about 1.2 inches (30 mm) from the wall" in the BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf (page 21, 6.3.1 ETHOS System Mounting).
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: PDF page 21, 6.3.1 ETHOS System Mounting
Documented
Mounting: Secure each module to the wall using L brackets and the fastener screws
Official user manual
Sources
Printed as "Secure each module to the wall using L brackets and the fastener screws." in the BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf (page 22, 6.3.1 ETHOS System Mounting).
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: PDF page 22, 6.3.1 ETHOS System Mounting
Documented
Battery format: Stackable
Site classificationBased onOfficial user manual
Details
Charged Reviews classified this product from the documents it is based on. It is our own grouping, not a manufacturer claim.
Printed as "Introducing BigBattery’s ETHOS! These revolutionary stackable on-grid lithium battery" and "This document applies to every ETHOS stackable battery system.". Classified as Stackable from the maker's own words for this model.
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: BigBattery ETHOS ESS user manual (BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL), PDF page 8, 3. Introduction; section 4.1 names the ETHOS Battery Module SKU FETHS-48051-G1
Address / DIP setting (manual): Select the first battery as “0001” (ID:1), the second as “0010” (ID:2), the third as “0011” (ID:3) and so on, making sure every battery has a unique ID
Official user manual
Sources
Printed as "Select the first battery as “0001” (ID:1)"; "making sure every battery has a unique ID" in the BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf (page 18, 5.4 Ethos ID Addresses Description). Set with the battery's ID DIP switch.
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: PDF page 18, 5.4 Ethos ID Addresses Description
Documented
Series connection allowed: No
Official user manual
Sources
Printed as "Do not put the ETHOS batteries in series." in the BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf (page 20, 6.1 Installation Safety Guidelines).
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: PDF page 20, 6.1 Installation Safety Guidelines
Documented
Communication ports (manual): Comm Port: RJ45 communication port, RS485/CAN
Official user manual
Sources
Printed as "2 Comm Port RJ45 Communication Port RS485/CAN" in the BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf (page 16, 5.3 ETHOS Diagram, ETHOS Battery).
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: PDF page 16, 5.3 ETHOS Diagram, ETHOS Battery
Documented
Mounting orientation (manual): Always mount the battery in an upright position
Official user manual
Sources
Printed as "Always mount the battery in an upright position." in the BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf (page 20, 6.1 Installation Safety Guidelines).
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: PDF page 20, 6.1 Installation Safety Guidelines
Documented
Compatible batteries / BMS: Supported inverters, RS485: Growatt, EG4 / Lux, Schneider, Inhenergy, Voltronic; CAN: Growatt, Sol-Ark, Deye, Megarevo, Victron, EG4 / Lux, SMA, Inhenergy, Solis
Official user manual
Sources
Printed as "7.2 Supported Inverters P0 RS485 P0 CAN"; "5 Voltronic 5 Victron 6 EG4 / Lux 7 SMA 8 Inhenergy 9 Solis"; "select P02-LUX for RS485 communication, and P06-LUX for CAN communication" in the BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf (pages 38, 39, 7.2 Supported Inverters). The two-column list is interleaved in the text layer; the EG4 protocol codes on page 38 (P02 for RS485, P06 for CAN) confirm the column order. Protocol is selected on the control box screen.
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: PDF pages 38, 39, 7.2 Supported Inverters
Documented
Inverter communications: CAN bus; RS-485
Official user manual
Sources
Printed as "CAN bus and RS-485 communication with different inverters." in the BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf (page 9, 3.2 Features & Applications). Communication with the inverter runs through the ETHOS control box.
Official user manual: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf Checked Sep 19, 2026 · Earlier document
Location: PDF page 9, 3.2 Features & Applications
Documented

Published claims and calculations, not independent test results.

Documents

3 on file

PDF
ETHOS-SpecSheet-1.4-BatteryCB.pdfOfficialBigBatteryOfficial datasheet
Source details
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Not stated
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Not stated
Linked from https://bigbattery.com/products/51-2v100ah-ethos-5-12kwh-stackable-type/ with link text "none".
Location: ETHOS-SpecSheet-1.4-BatteryCB.pdf
Retrieved Sep 19, 2026
Original manufacturer-hosted PDF preserved byte for byte, downloaded from the link published on the BigBattery product page this catalog already records for bigbattery-feths-48051-g1. The revision is whatever was served at this URL on the access date; no later revision was checked, no issuer or laboratory record was read against anything the document states, and no coverage is claimed beyond the product whose page linked it.
SHA-256: 952f09c5d3504d37b07230d949f47ed187d0c221be1f9739ea66e23b6e8f8037
Official product page: BigBattery FETHS-48051-G1: BigBattery product page (September 20 capture) Checked Sep 19, 2026 · Earlier document
Archived copies
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Archived backup Revision not recorded · 0.57 MB
Archived copy, unaltered, kept as a record of what BigBattery published. Original address: https://bigbattery.com/wp-content/uploads/2026/04/ETHOS-SpecSheet-1.4-BatteryCB.pdf. Copyright and takedown
Source first found
Sep 19, 2026, 11:47 PM PDT
This copy captured
Sep 19, 2026, 11:47 PM PDT
Archived
Sep 19, 2026, 11:47 PM PDT
File details
Original source
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 952f09c5d3504d37b07230d949f47ed187d0c221be1f9739ea66e23b6e8f8037
Open
PDF
BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdfOfficialBigBatteryOfficial user manual
Source details
Revision
Not stated
Revision date
Not stated
Linked from https://bigbattery.com/products/51-2v100ah-ethos-5-12kwh-stackable-type/ with link text "none".
Location: BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf
Retrieved Sep 19, 2026
Original manufacturer-hosted PDF preserved byte for byte, downloaded from the link published on the BigBattery product page this catalog already records for bigbattery-feths-48051-g1. The revision is whatever was served at this URL on the access date; no later revision was checked, no issuer or laboratory record was read against anything the document states, and no coverage is claimed beyond the product whose page linked it.
SHA-256: 6144def6c4b8db24a55b0d8955777e84a2742f25324fff697ea10a5b5fc8729c
Official product page: BigBattery FETHS-48051-G1: BigBattery product page (September 20 capture) Checked Sep 19, 2026 · Earlier document
Archived copies
Archived copy of a document published by BigBattery. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived backup Revision not recorded · 15.78 MB
Archived copy, unaltered, kept as a record of what BigBattery published. Original address: https://bigbattery.com/wp-content/uploads/2026/08/BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf. Copyright and takedown
Source first found
Sep 19, 2026, 11:47 PM PDT
This copy captured
Sep 19, 2026, 11:47 PM PDT
Archived
Sep 19, 2026, 11:47 PM PDT
File details
Original source
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 6144def6c4b8db24a55b0d8955777e84a2742f25324fff697ea10a5b5fc8729c
Open
WEB
BigBattery FETHS-48051-G1 product identityOfficialBigBatteryOfficial product page
Source details
Revision
Not stated
Revision date
Not stated
Revision date not established.
Location: Original source record
Retrieved Sep 15, 2026
Official product page: BigBattery FETHS-48051-G1 product identity Checked Sep 15, 2026
Open

Archive and older revisions4

Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.

PDF
BigBattery 48V ETHOS User Manual (Version 1.5, 2/28/2024; earlier edition; Internet Archive copy captured 8 October 2024)BigBatterySource user manualFebruary 2024
Source details
Revision
VERSION 1.5
Revision date
February 2024
Earlier edition; Internet Archive copy of BigBattery's file (capture of 8 October 2024), obtained by Alternative Research on 2 October 2026.
Location: PDF page 1 (cover, version and model SKU) and PDF page 3 (version history)
Retrieved Oct 1, 2026
BigBattery's own user manual for its 48V ETHOS battery, originally at https://bigbattery.com/wp-content/uploads/2024/08/ETHOSManual-halfletter-V1.5.pdf; the cover prints "VERSION 1.5" and "MODEL SKU: FETHS-48051-G1", and its version history dates Version 1.5 to 2/28/2024. BigBattery now publishes the 48V ETHOS ESS User Manual (Version 1.7), which this record cites as its primary manual; this earlier edition is kept for the record's history. BigBattery's own site refuses our research agent, so this copy was obtained by Alternative Research on 2 October 2026 from the Internet Archive, which captured BigBattery's own file on 8 October 2024. It is labeled as an archived copy, not a current download from BigBattery. Manufacturer instructions, not independent tests.
Open
WEB
BigBattery ETHOS 48V 5.12kWh battery module product page (September 25, 2026 capture)OfficialBigBatteryOfficial product page
Source details
Revision
Not stated
Revision date
Not stated
Location: Product summary; Downloads & Specifications, Certifications row
Retrieved Sep 24, 2026
BigBattery's own product page for the ETHOS battery module, SKU FETHS-48051-G1, captured on September 25, 2026; the content is whatever the URL served on that date. Figures are manufacturer ratings as printed on the page, not test results. Cited for the warranty statement and the Certifications row only.
Open
WEB
BigBattery FETHS-48051-G1: BigBattery product page (September 20 capture)OfficialBigBatteryOfficial product page
Source details
Revision
Not stated
Revision date
Not stated
Revisited from the URL the catalog already records for bigbattery-feths-48051-g1.
Location: 82 label/value rows read; catalog SKU FETHS-48051-G1
Retrieved Sep 19, 2026
Manufacturer-operated product page captured byte for byte. This page was already recorded as a source for this exact catalog row, so no page was discovered by guessing a URL and no product was matched by name. It establishes what BigBattery published there on the access date: the specification rows printed on the page, the documents linked from it and the image it presents. Marketing copy and any standards named on the page remain manufacturer claims that no issuer or laboratory record was read against.
Open
PDF
BigBattery reference documentOfficialBigBatteryOfficial document
Source details
Revision
Not stated
Revision date
Not stated
Exact model is printed in the document.
Location: PDF page 1
Retrieved Sep 15, 2026
SHA-256: 6ef8583de9924c7b75680cafd68b6ce4cd86cd082fb89d68d0a2eec3ddac379c
Archived copies
Archived copy of a document published by BigBattery. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived backup Revision not recorded · 0.16 MB
Archived copy, unaltered, kept as a record of what BigBattery published. Original address: https://bigbattery.com/wp-content/uploads/2023/11/SDS_BigBattery_LFP-1.pdf. Copyright and takedown
Source first found
Sep 15, 2026, 9:19 AM PDT
This copy captured
Sep 15, 2026, 9:19 AM PDT
Archived
Sep 15, 2026, 1:58 PM PDT
File details
Original source
Pages
8
Embedded creation date
Nov 6, 2023
Embedded modification date
Nov 6, 2023
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 6ef8583de9924c7b75680cafd68b6ce4cd86cd082fb89d68d0a2eec3ddac379c
Open

Archived documents

BigBattery reference document

Archived copy of a document published by BigBattery. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.

Archived backup Revision not recorded · 0.59 MB

Archived copy, unaltered, kept as a record of what BigBattery published. Original address: https://bigbattery.com/wp-content/uploads/2024/08/UL9540A-Certificate-1.pdf. Copyright and takedown

Source first found: Sep 15, 2026, 9:20 AM PDT
This copy captured: Sep 15, 2026, 9:20 AM PDT
Archived: Sep 15, 2026, 1:58 PM PDT

File details

Original source

Pages: 2
Embedded creation date: Mar 14, 2024
Embedded modification date: Mar 14, 2024

Embedded dates are file metadata, not independent proof of publication.

SHA-256: eb964fdd39a2f23534bbeb7302991b3b218209ed07f5b0d6b6341171c4af3606

BigBattery reference document

Archived backup Revision not recorded · 0.07 MB

Archived copy, unaltered, kept as a record of what BigBattery published. Original address: https://bigbattery.com/wp-content/uploads/2024/02/UL1973-ETHOS.pdf. Copyright and takedown

Source first found: Sep 15, 2026, 9:19 AM PDT
This copy captured: Sep 15, 2026, 9:19 AM PDT
Archived: Sep 15, 2026, 1:58 PM PDT

File details

Original source

Pages: 1
Embedded creation date: Feb 15, 2024
Embedded modification date: Feb 15, 2024

Embedded dates are file metadata, not independent proof of publication.

SHA-256: 97b6a9604e8ae0eb5165950ef1d95c4567bf732dcf4d180054fa714f8e702a48

BigBattery reference document

Archived backup Revision not recorded · 0.16 MB

Archived copy, unaltered, kept as a record of what BigBattery published. Original address: https://bigbattery.com/wp-content/uploads/2023/11/SDS_BigBattery_LFP-1.pdf. Copyright and takedown

Source first found: Sep 15, 2026, 9:19 AM PDT
This copy captured: Sep 15, 2026, 9:19 AM PDT
Archived: Sep 15, 2026, 1:58 PM PDT

File details

Original source

Pages: 8
Embedded creation date: Nov 6, 2023
Embedded modification date: Nov 6, 2023

Embedded dates are file metadata, not independent proof of publication.

SHA-256: 6ef8583de9924c7b75680cafd68b6ce4cd86cd082fb89d68d0a2eec3ddac379c

BigBattery reference document

Archived backup Revision not recorded · 0.57 MB

Archived copy, unaltered, kept as a record of what BigBattery published. Original address: https://bigbattery.com/wp-content/uploads/2026/04/ETHOS-SpecSheet-1.4-BatteryCB.pdf. Copyright and takedown

Source first found: Sep 15, 2026, 9:19 AM PDT
This copy captured: Sep 15, 2026, 9:19 AM PDT
Archived: Sep 15, 2026, 1:58 PM PDT

File details

Original source

Pages: 4
Embedded creation date: Apr 22, 2026
Embedded modification date: Apr 22, 2026

Embedded dates are file metadata, not independent proof of publication.

SHA-256: 952f09c5d3504d37b07230d949f47ed187d0c221be1f9739ea66e23b6e8f8037

BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf

Archived backup Revision not recorded · 15.78 MB

Archived copy, unaltered, kept as a record of what BigBattery published. Original address: https://bigbattery.com/wp-content/uploads/2026/08/BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf. Copyright and takedown

Source first found: Sep 19, 2026, 11:47 PM PDT
This copy captured: Sep 19, 2026, 11:47 PM PDT
Archived: Sep 19, 2026, 11:47 PM PDT

File details

Original source

Embedded dates are file metadata, not independent proof of publication.

SHA-256: 6144def6c4b8db24a55b0d8955777e84a2742f25324fff697ea10a5b5fc8729c

48V-ETHOS-DOC-UN38.3.pdf

Archived backup Revision not recorded · 0.16 MB

Archived copy, unaltered, kept as a record of what BigBattery published. Original address: https://bigbattery.com/wp-content/uploads/2024/08/48V-ETHOS-DOC-UN38.3.pdf. Copyright and takedown

Source first found: Sep 19, 2026, 11:47 PM PDT
This copy captured: Sep 19, 2026, 11:47 PM PDT
Archived: Sep 19, 2026, 11:47 PM PDT

File details

Original source

Embedded dates are file metadata, not independent proof of publication.

SHA-256: d43a12c88d8c4a47a94aa239f4e824c88eb7e8fb6409a533bbb5d7107a9ef042

Submit a document

Warranty

Warranty term: 12 years
Official product page
Sources
Printed as "backed by a 12-Year Warranty" and "BigBattery batteries are backed by a 12-year warranty" on BigBattery's FETHS-48051-G1 product page, captured on September 25, 2026. The page prints no retention or throughput terms.
Official product page: BigBattery ETHOS 48V 5.12kWh battery module product page (September 25, 2026 capture) Checked Sep 24, 2026 · Earlier document
Location: Product page, Product Summary and Warranty tab
Documented

Sellers

Affiliate links below. Affiliate disclosure

ShopSolar

1 review

Listing SKU FETHS-48051-G1

$1,250Recorded Nov 12, 2026

Visit sellerPaid link.

Signature Solar

4.6 (7)not verified

Listing SKU 1622028

$1,250Recorded Nov 11, 2026

Visit sellerPaid link.

BigBattery

No reviews

Listing SKU FETHS-48051-G1

$1,250Recorded Oct 27, 2026

Visit sellerPaid link.

Report a seller problem

Price history

Prices we read at ShopSolar, Signature Solar and BigBattery · 41 readings from Sep 20, 2026 to Nov 12, 2026

Chart, listings & data

Since Sep 20, 2026 · Listing price (USD)

ShopSolarView listing Paid link.

Signature SolarView listing Paid link.

BigBatteryView listing Paid link.

ShopSolar$1,250Nov 12, 2026, 1:26 AM PSTLatest check · hover or tap for earlier prices

A break in a line is a gap in our readings: no price is drawn for days we did not read.

Price data

Collected price observations by seller
Checked (UTC)	Seller	Price
Sep 20, 2026, 7:50 AM PDT	ShopSolar Paid link.	$1,062.50
Sep 24, 2026, 2:01 AM PDT	ShopSolar Paid link.	$1,062.50
Sep 25, 2026, 2:30 AM PDT	ShopSolar Paid link.	$1,062.50
Sep 27, 2026, 4:01 AM PDT	ShopSolar Paid link.	$1,062.50
Sep 28, 2026, 5:54 PM PDT	ShopSolar Paid link.	$1,062.50
Sep 29, 2026, 3:54 PM PDT	ShopSolar Paid link.	$1,062.50
Oct 4, 2026, 1:06 AM PDT	ShopSolar Paid link.	$1,062.50
Oct 4, 2026, 9:16 AM PDT	Signature Solar Paid link.	$1,062.50
Oct 16, 2026, 1:06 AM PDT	ShopSolar Paid link.	$1,062.50
Oct 17, 2026, 1:16 AM PDT	ShopSolar Paid link.	$1,062.50
Oct 18, 2026, 1:06 AM PDT	ShopSolar Paid link.	$1,062.50
Oct 20, 2026, 9:17 PM PDT	ShopSolar Paid link.	$1,062.50
Oct 22, 2026, 1:16 AM PDT	ShopSolar Paid link.	$1,062.50
Oct 24, 2026, 3:01 AM PDT	Signature Solar Paid link.	$1,062.50
Oct 25, 2026, 1:06 AM PDT	ShopSolar Paid link.	$1,062.50
Oct 26, 2026, 1:07 AM PDT	ShopSolar Paid link.	$1,062.50
Oct 27, 2026, 1:07 AM PDT	ShopSolar Paid link.	$1,062.50
Oct 27, 2026, 2:51 AM PDT	Signature Solar Paid link.	$1,062.50
Oct 27, 2026, 8:39 AM PDT	BigBattery Paid link.	$1,250
Oct 28, 2026, 1:26 AM PDT	ShopSolar Paid link.	$1,062.50
Oct 28, 2026, 3:21 AM PDT	Signature Solar Paid link.	$1,062.50
Oct 29, 2026, 1:16 AM PDT	ShopSolar Paid link.	$1,062.50
Oct 29, 2026, 3:45 AM PDT	Signature Solar Paid link.	$1,062.50
Oct 30, 2026, 1:26 AM PDT	ShopSolar Paid link.	$1,062.50
Oct 30, 2026, 3:46 AM PDT	Signature Solar Paid link.	$1,250
Oct 31, 2026, 3:32 AM PDT	Signature Solar Paid link.	$1,250
Nov 1, 2026, 1:07 AM PDT	ShopSolar Paid link.	$1,062.50
Nov 1, 2026, 3:44 AM PST	Signature Solar Paid link.	$1,250
Nov 2, 2026, 4:05 AM PST	Signature Solar Paid link.	$1,250
Nov 2, 2026, 9:29 AM PST	Signature Solar Paid link.	$1,250
Nov 3, 2026, 1:06 AM PST	ShopSolar Paid link.	$1,250
Nov 3, 2026, 4:21 AM PST	Signature Solar Paid link.	$1,250
Nov 4, 2026, 3:42 AM PST	ShopSolar Paid link.	$1,250
Nov 5, 2026, 1:06 AM PST	ShopSolar Paid link.	$1,250
Nov 5, 2026, 2:10 AM PST	Signature Solar Paid link.	$1,250
Nov 6, 2026, 1:07 AM PST	ShopSolar Paid link.	$1,250
Nov 7, 2026, 1:17 AM PST	ShopSolar Paid link.	$1,250
Nov 7, 2026, 3:15 AM PST	Signature Solar Paid link.	$1,250
Nov 8, 2026, 1:16 AM PST	ShopSolar Paid link.	$1,250
Nov 11, 2026, 2:11 AM PST	Signature Solar Paid link.	$1,250
Nov 12, 2026, 1:26 AM PST	ShopSolar Paid link.	$1,250

Owner reviews

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Own one? A verified review needs a receipt and a serial number photo, and counts 19× in the owner rating.

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Your reviews · Review policy

Evidence score

12/100Missing details20% documented

The Evidence score uses the priorities you choose. It counts published documents, such as certificates and warranty terms, and it compares a documented figure with the best documented figure of the same kind. It does not count owner reviews, and it is not a verdict on product quality or on how many people have reviewed it. A low score can mean little is documented, or that a documented figure is below the best of its kind. Undisclosed data scores 0.

Missing details. This number counts only the evidence recorded so far. The source review for this product is not finished, or the maker has not disclosed enough, so the number can only go up.

Missing for this product: Certificates evidence needed; Warranty energy disclosure evidence needed; Lifetime / capacity evidence needed; Cell model disclosure evidence needed.

48 V · Stackable · Rated capacity

The warranty term and the lifetime energy are each scored against the best documented value for a home storage battery: a value earns its share of that best, times the weight. A documented value always earns points; an undisclosed one earns 0.

Warranty term12 years12 / 20

12 years · 20% weight

12 of 20 years, the best documented for a home storage battery (printed by the maker): Bioenno Power 6V 3Ah LiFePO4 Battery (PVC, BLF-0603W)

Printed as "backed by a 12-Year Warranty" and "BigBattery batteries are backed by a 12-year warranty" on BigBattery's FETHS-48051-G1 product page, captured on September 25, 2026. The page prints no retention or throughput terms.

60 / 100 × 20 = 12 points.

Official product page: BigBattery ETHOS 48V 5.12kWh battery module product page (September 25, 2026 capture) Checked Sep 24, 2026 · Earlier document

Lifetime / capacityResearch pending0 / 20

No qualifying figure · 20% weight

Not published. No lifetime-production bonus.

Not documented. Undisclosed data scores 0.

Source user manual: BigBattery 48V ETHOS User Manual (Version 1.5, 2/28/2024; earlier edition; Internet Archive copy captured 8 October 2024) Rev VERSION 1.5 · February 2024 · Checked Oct 1, 2026 · Earlier document

Research pending, 0 points: Certificates, Warranty energy disclosure, Cell model disclosure.

Computed from public specifications and evidence records. Warranty duration is not service quality; certificate evidence points are not a safety rating. Compatibility and installation limits still apply.

How it works Manufacturer? Submit documentation

Certificates

4 on fileUL 9540 · claimed

UL9540Battery pack claim; verification pendingClaimedListed when checked

BigBattery's own FETHS-48051-G1 product page prints "Certifications: UL9540, UL9540A, UL1973, & UN38.3"; UL9540 is recorded as one entry of that row. The page gives no file number, issuer or scope for the row. The ETHOS specification sheet (last revision 12/02/2025) prints "UL9540A, UL1973, & UN38.3" without UL9540. Manufacturer claim only.

Models: FETHS-48051-G1

Standard as printed: UL9540
Edition as printed: Not printed
What it covers: Battery pack claim; verification pending
Type: A listing to the energy storage system standard
For a permit: Permit offices commonly ask for this listing; local rules vary.

Issued: Not stated
Valid from: Not stated
Expiry: Not stated
Issuer checked: Not checked

Official product page: BigBattery ETHOS 48V 5.12kWh battery module product page (September 25, 2026 capture) Checked Sep 24, 2026 · Earlier document

UL9540ABattery pack claim; verification pendingClaimedListed when checked

BigBattery's own FETHS-48051-G1 product page prints "Certifications: UL9540, UL9540A, UL1973, & UN38.3"; UL9540A is recorded as one entry of that row. The page gives no file number, issuer or scope for the row. The ETHOS specification sheet (last revision 12/02/2025) prints "UL9540A, UL1973, & UN38.3" without UL9540. Manufacturer claim only.

Models: FETHS-48051-G1

Standard as printed: UL9540A
Edition as printed: Not printed
What it covers: Battery pack claim; verification pending
Type: A fire-test report (UL 9540A is a test method, not a listing)
For a permit: A fire test. Useful supporting evidence, but it does not replace UL 9540.

Issued: Not stated
Valid from: Not stated
Expiry: Not stated
Issuer checked: Not checked

Official product page: BigBattery ETHOS 48V 5.12kWh battery module product page (September 25, 2026 capture) Checked Sep 24, 2026 · Earlier document

UL1973Battery pack claim; verification pendingClaimedListed when checked

BigBattery's own FETHS-48051-G1 product page prints "Certifications: UL9540, UL9540A, UL1973, & UN38.3"; UL1973 is recorded as one entry of that row. The page gives no file number, issuer or scope for the row. The ETHOS specification sheet (last revision 12/02/2025) prints "UL9540A, UL1973, & UN38.3" without UL9540. Manufacturer claim only.

Models: FETHS-48051-G1

Issued: Not stated
Valid from: Not stated
Expiry: Not stated
Issuer checked: Not checked

Official product page: BigBattery ETHOS 48V 5.12kWh battery module product page (September 25, 2026 capture) Checked Sep 24, 2026 · Earlier document

UN38.3Battery pack claim; verification pendingClaimedListed when checked

BigBattery's own FETHS-48051-G1 product page prints "Certifications: UL9540, UL9540A, UL1973, & UN38.3"; UN38.3 is recorded as one entry of that row. The page gives no file number, issuer or scope for the row. The ETHOS specification sheet (last revision 12/02/2025) prints "UL9540A, UL1973, & UN38.3" without UL9540. Manufacturer claim only.

Models: FETHS-48051-G1

Issued: Not stated
Valid from: Not stated
Expiry: Not stated
Issuer checked: Not checked

Official product page: BigBattery ETHOS 48V 5.12kWh battery module product page (September 25, 2026 capture) Checked Sep 24, 2026 · Earlier document

Certificate guide

Parts and accessories

No sourced accessories or replacement parts listed yet.

Model history

Model identity

Model: FETHS-48051-G1

Manufacturer SKU FETHS-48051-G1

No historical observations recorded yet.

Community discussions

No discussions linked yet. Search DIY Solar Forum

Recalls / legal notices

No recalls or legal notices on file; this is not a complete recall or court search. All notices · Report a notice

BigBatteryProducts, reviews and history

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Something wrong that is not one of the values above?

Prices · price basis. * Calculated; estimates labeled. Value needs confirmation; select it for the reason.

BigBattery FETHS-48051-G1

Key specs

Lifetime production

Documents

Archive and older revisions

Archived documents

Warranty

Sellers

ShopSolar

Evidence

Signature Solar

Discounts

Evidence

BigBattery

Evidence

Price history

Owner reviews

Evidence score

Certificates

Parts and accessories

Model history

Model identity

Community discussions

Recalls / legal notices