JBD SP04S034 3S-4S Smart BMS with Bluetooth and UART: JBD SP04S034 smart BMS, maker photo: the plain board image of JBD's own store listing for this one model; the board's label prints "JBD-SP04S034 V1.3", 4 series, 200A (one of the listing's current ratings). The board alone at an angle with its temperature sensor leads, on a white background, no added text.

1 photo · Image from jiabaida-bms.com

Photo sources

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

Image source: JBD SP04S034 smart BMS, maker photo: the plain board image of JBD's own store listing for this one model; the board's label prints "JBD-SP04S034 V1.3", 4 series, 200A (one of the listing's current ratings). The board alone at an angle with its temperature sensor leads, on a white background, no added text.

JBD SP04S034 3S-4S Smart BMS with Bluetooth and UART

Name: JBD SP04S034 3S-4S Smart BMS with Bluetooth and UART
Brand: JBD
SKU: SP04S034

By JBDSKU SP04S034

Battery management systems

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Series cells3-4S Battery chemistryLiFePO4, Li-ion Continuous discharge currentNot stated Continuous charge currentNot stated Balance currentNot stated CommunicationsBluetooth; RS485; UART

Key specs

Units

SKU: SP04S034
Official product page
Sources
Model as printed by JBD on its product page ("Brand Name: JBD"). The page sells current, chemistry and function variants (3S 4S 100A, 120A, 150A and 200A, LiFePO4 or Li-ion) under this one model and prints no separate variant code.
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, Quick Details, Model Number
Documented
Series cells: 3-4S
Official product page
Sources
Printed as "String: 3-4S"; the variants are named "3S 4S".
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, Quick Details, String
Documented
Dimensions: 0.49 L
Calculated: Enclosure volume: W × H × D ÷ 1,000,000
232 × 105 × 20 mm9.13 × 4.13 × 0.79 in convertedOfficial product page
Sources
Printed as "232*105*20mm"; the axes are not named.
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, Quick Details, Product Size
Calculated
Communications: Bluetooth; RS485; UART
Official product page
Sources
Printed as "Bluetooth/RS485/UART/Heating"; RS485 is offered in one variant (Balance+Bluetooth+UART+RS485+Heating) and the page says the UART/RS485 communication box is purchased separately.
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, Quick Details, Communication Protocol
Documented
Operating voltage range: 9.2 to 15 V
Official product page
Sources
Printed in the LiFePO4 details table, which also prints "Charge voltage(recommend) 14.4V".
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, BMS Lifepo4 Details, Working voltage range
Documented
Battery chemistry: LiFePO4, Li-ion
Official product page
Sources
JBD sells LiFePO4 and Li-ion variants of this model; the details table is headed "BMS Lifepo4 Details".
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, variant list
Documented
Operating temperature: -30 to 75 °C-22 to 167 °F converted
Official product page
Sources
Printed as "-30 degree~75 degree".
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, BMS Lifepo4 Details, Working Temperature
Documented

All specs6

Series cells: 3-4S
Official product page
Sources
Printed as "String: 3-4S"; the variants are named "3S 4S".
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, Quick Details, String
Documented
Dimensions: 232 D × 105 D × 20 D mm9.13 D × 4.13 D × 0.79 D in converted
Official product page
Sources
Printed as "232*105*20mm"; the axes are not named.
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, Quick Details, Product Size
Documented
Communications: Bluetooth; RS485; UART
Official product page
Sources
Printed as "Bluetooth/RS485/UART/Heating"; RS485 is offered in one variant (Balance+Bluetooth+UART+RS485+Heating) and the page says the UART/RS485 communication box is purchased separately.
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, Quick Details, Communication Protocol
Documented
Operating voltage range: 9.2 to 15 V
Official product page
Sources
Printed in the LiFePO4 details table, which also prints "Charge voltage(recommend) 14.4V".
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, BMS Lifepo4 Details, Working voltage range
Documented
Battery chemistry: LiFePO4, Li-ion
Official product page
Sources
JBD sells LiFePO4 and Li-ion variants of this model; the details table is headed "BMS Lifepo4 Details".
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, variant list
Documented
Operating temperature: -30 to 75 °C-22 to 167 °F converted
Official product page
Sources
Printed as "-30 degree~75 degree".
Official product page: JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: Product page, BMS Lifepo4 Details, Working Temperature
Documented

Published claims and calculations, not independent test results.

Documents

1 on file

WEB
JBD product page: JBD Smart BMS 3S 4S 100A-200A, model SP04S034 (October 15, 2026 capture)OfficialJiabaida (JBD)Official product page
Source details
Revision
Not stated
Revision date
Not stated
Archived copy captured on 2026-10-15.
Location: Product description: model, parameters and variant list
Retrieved Oct 15, 2026
JBD's (Jiabaida's) own product page on its official store at jiabaida-bms.com, which says "This is Jiabaida/JBD offical store on Shopify", captured on October 15, 2026. It prints the model SP04S034, Quick Details, a "BMS Lifepo4 Details" table and the variants sold under it (3S 4S, LiFePO4 or Li-ion, 100A to 200A). The details table names no variant. Manufacturer statements, not independent tests; the page carries no revision date.
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