Fox ESS CQ7-US-L5 High-Voltage Battery (34.8 kWh): Maker series photo: Fox ESS CQ7 (US), the stack picture on page 1 of Fox ESS's US CQ7 datasheet (V1.2, 2026/07/23), whose table names the CQ7-US-L5; the same picture is used for every stack configuration of the series and does not show this configuration's module count (it shows a control module over three modules; this model is 1*CQ7-M-US 4*CQ7-S-US). Same render as on its EQ5000-P datasheet. Figure from the manufacturer's document, page 1.

1 photo · Image from us.fox-ess.com

Photo sources

Manufacturer and seller images. Configuration examples may include additional equipment.

Image source: Maker series photo: Fox ESS CQ7 (US), the stack picture on page 1 of Fox ESS's US CQ7 datasheet (V1.2, 2026/07/23), whose table names the CQ7-US-L5; the same picture is used for every stack configuration of the series and does not show this configuration's module count (it shows a control module over three modules; this model is 1*CQ7-M-US 4*CQ7-S-US). Same render as on its EQ5000-P datasheet. Figure from the manufacturer's document, page 1.

Fox ESS CQ7-US-L5 High-Voltage Battery (34.8 kWh)

Name: Fox ESS CQ7-US-L5 High-Voltage Battery (34.8 kWh)
Brand: Fox ESS

By Fox ESSSKU not documented

High-voltage stacked battery Stackable 288 V

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Basic specs34.8 kWhDischarge60 A max.Charge50 A recommendedPeak current: 110 A $ / rated kWhUnavailable WarrantyUnknownSee terms Lifetime productionNot published Size210.28 L^*W: 660 × H: 885 × D: 360 mm257 kg566.59 lb0.17 kWh/L*CertificatesNone on fileEvidence missing

Key specs

Units

Chemistry: LFP (LiFePO4)
Official datasheet
Sources
Printed as "LFP (LiFePO₄)" in the row "Battery Type".
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Battery Type
Documented
Nominal energy: 34.8 kWh
Official datasheet
Sources
Printed as "34.80" in the row "Nominal Capacity [kWh]", "-L5" column under "CQ7-US". The text layer prints this column's CQ7-S-US module count, energy and voltage as quoted.
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Nominal Capacity [kWh], "-L5" column under "CQ7-US"
Documented
Nominal voltage: 288 V
Official datasheet
Sources
Printed as "288.0" in the row "Nominal Voltage [V]", "-L5" column under "CQ7-US".
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Nominal Voltage [V], "-L5" column under "CQ7-US"
Documented
Maximum discharge current: 60 A
Official datasheet
Sources
Printed as "60" in the row "Max. Charge/Discharge Current [A]*1", one value for every column; footnote 1: "The current is affected by temperature, cell voltage and SOC."
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Max. Charge/Discharge Current [A]
Documented
Maximum charge current: 60 A
Official datasheet
Sources
Printed as "60" in the row "Max. Charge/Discharge Current [A]*1", one value for every column; footnote 1: "The current is affected by temperature, cell voltage and SOC."
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Max. Charge/Discharge Current [A]
Documented
Peak discharge current: 110 A
Official datasheet
Sources
Printed as "110" in the row "Peak Discharge Current (60s) [A]"; for 60 seconds as printed.
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Peak Discharge Current (60s) [A]
Documented
Operating voltage range: 104.4 to 919.8 V
Official datasheet
Sources
Printed as "104.4 ~ 919.8" in the row "Operating Voltage [V]", one range spanning every column (-L2 to -L14), not a range for this column alone.
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Operating Voltage [V]
Documented
Recommended charge current: 50 A
Official datasheet
Sources
Printed as "50" in the row "Recommend Charge/Discharge Current [A]", one value for every column.
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Recommend Charge/Discharge Current [A]
Documented

1 spec not documented yet: usable energyHelp fill in ›

All specs17

Chemistry: LFP (LiFePO4)
Official datasheet
Sources
Printed as "LFP (LiFePO₄)" in the row "Battery Type".
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Battery Type
Documented
Nominal energy: 34.8 kWh
Official datasheet
Sources
Printed as "34.80" in the row "Nominal Capacity [kWh]", "-L5" column under "CQ7-US". The text layer prints this column's CQ7-S-US module count, energy and voltage as quoted.
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Nominal Capacity [kWh], "-L5" column under "CQ7-US"
Documented
Usable energy: Not documented
Nominal voltage: 288 V
Official datasheet
Sources
Printed as "288.0" in the row "Nominal Voltage [V]", "-L5" column under "CQ7-US".
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Nominal Voltage [V], "-L5" column under "CQ7-US"
Documented
Maximum discharge current: 60 A
Official datasheet
Sources
Printed as "60" in the row "Max. Charge/Discharge Current [A]*1", one value for every column; footnote 1: "The current is affected by temperature, cell voltage and SOC."
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Max. Charge/Discharge Current [A]
Documented
Maximum charge current: 60 A
Official datasheet
Sources
Printed as "60" in the row "Max. Charge/Discharge Current [A]*1", one value for every column; footnote 1: "The current is affected by temperature, cell voltage and SOC."
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Max. Charge/Discharge Current [A]
Documented
Peak discharge current: 110 A
Official datasheet
Sources
Printed as "110" in the row "Peak Discharge Current (60s) [A]"; for 60 seconds as printed.
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Peak Discharge Current (60s) [A]
Documented
Operating voltage range: 104.4 to 919.8 V
Official datasheet
Sources
Printed as "104.4 ~ 919.8" in the row "Operating Voltage [V]", one range spanning every column (-L2 to -L14), not a range for this column alone.
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Operating Voltage [V]
Documented
Recommended charge current: 50 A
Official datasheet
Sources
Printed as "50" in the row "Recommend Charge/Discharge Current [A]", one value for every column.
Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document
Location: Page 2, Electrical characteristics, Recommend Charge/Discharge Current [A]
Documented

Lifetime production

Not published

Published claims and calculations are not independently tested lifetime output.

Published claims and calculations, not independent test results.

Documents

2 on file

PDF
Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23OfficialFox ESSOfficial datasheet
Source details
Revision
V1.2 | 2026/07/23
Revision date
Not stated
Archived copy captured on 2026-10-27.
Location: Page 2, Technical specifications table; page 1, product figure
Retrieved Oct 27, 2026
FOXESS CO., LTD.'s own two-page datasheet (PDF) on us.fox-ess.com, linked from the Downloads > Datasheets page of us.fox-ess.com, captured on October 27, 2026. The page 2 table is read from the rendered page: the PDF text layer prints the row labels and the column values in separate runs, so each cited value is quoted as it appears in the text layer and its row and column were confirmed on the rendered page. The model heading prints "CQ7-US" above the column headings "-L2" to "-L14". Manufacturer document, not an independent test.
Archived copies
Archived copy of a document published by Fox ESS. 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 V1.2 | 2026/07/23 · 0.16 MB
Source first found
Oct 27, 2026
This copy captured
Oct 27, 2026, 5:00 PM UTC
Archived
Oct 27, 2026, 5:00 PM UTC
File details
Original source
Pages
2
Embedded creation date
Jul 30, 2026
Embedded modification date
Jul 30, 2026
Embedded dates are file metadata, not independent proof of publication.
SHA-256: a6e952901b404f851e78e86581fe5e7eb5d2a89a41ed4dd1eb85c488fa8d78b9
Open
WEB
Fox ESS US product page: CQ7 (October 27, 2026 capture)OfficialFox ESSOfficial product page
Source details
Revision
Not stated
Revision date
Not stated
Archived copy captured on 2026-10-27.
Location: Page heading and summary
Retrieved Oct 27, 2026
Fox ESS's own US product page (us.fox-ess.com), captured on October 27, 2026 with the paced research fetcher; the content is whatever the address served on that date. Manufacturer claims, not independent tests; the page carries no revision date.
Open

Archive and older revisions0

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Archived documents

Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23

Archived copy of a document published by Fox ESS. 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 V1.2 | 2026/07/23 · 0.16 MB

Source first found: Oct 27, 2026
This copy captured: Oct 27, 2026, 5:00 PM UTC
Archived: Oct 27, 2026, 5:00 PM UTC

File details

Original source

Pages: 2
Embedded creation date: Jul 30, 2026
Embedded modification date: Jul 30, 2026

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

SHA-256: a6e952901b404f851e78e86581fe5e7eb5d2a89a41ed4dd1eb85c488fa8d78b9

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Warranty

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Price history

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Evidence score

Research pending0% 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 for this product: Certificates evidence needed; Warranty term needed; Warranty energy disclosure evidence needed; Lifetime / capacity evidence needed; Cell model disclosure evidence needed.

High-voltage stacked batteries · 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.

Lifetime / capacityResearch pending0 / 20

No qualifying figure · 20% weight

Not published. No lifetime-production bonus.

Not documented. Undisclosed data scores 0.

Official datasheet: Fox ESS datasheet (US): CQ7 high voltage storage battery, V1.2 | 2026/07/23 Rev V1.2 | 2026/07/23 · Checked Oct 27, 2026 · Earlier document

Research pending, 0 points: Certificates, Warranty term, 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.

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Certificates

No certificates on file. Certificate guide

Parts and accessories

No sourced accessories or replacement parts listed yet.

Model history

Model identity

Model: CQ7-US-L5

US market

No historical observations recorded yet.

Community discussions

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Recalls / legal notices

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Fox ESS

Fox ESSProducts, reviews and history

4.0 (1)

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