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JK BMS B1A8S20P active balance BMS

Model: JK-B1A8S20P · SKU: JK-B1A8S20P

Prepared Nov 12, 2026

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Common specifications

Series cells	3-8SSource [1]
Battery chemistry	LiFePO4, Li-ion, LTOSource [1]
Continuous discharge current	200 ASource [1]
Continuous charge current	Not documented
Balance current	1 ASource [1]
Communications	Bluetooth, RS485Needs confirmationSource See note below[1]
Peak discharge current	400 ASource [1]
Balancing	Active balancingSource [1]
Heating output	Not documented
Weight	Not documented
Dimensions	Not documented
Enclosure volume	Not documented
Warranty term	Not documented

All recorded specifications

Balance current	1 ADocumented claim Conditions Printed as "Balance Current 1A" in the additional information table; the description prints an active balancing range of "0.1A – 1.0A", so this is the maximum. Location: Additional information table Printed as "Balance Current 1A" in the additional information table; the description prints an active balancing range of "0.1A – 1.0A", so this is the maximum. Location: Additional information table Official product page · Jikong Technology Official Store: JKBMS JK-B1A8S20P Smart Active Balance BMS [1]
Balancing	Active balancingDocumented claim Conditions Printed as "Smart Active Balance BMS" in the product title. Location: Product title Printed as "Smart Active Balance BMS" in the product title. Location: Product title Official product page · Jikong Technology Official Store: JKBMS JK-B1A8S20P Smart Active Balance BMS [1]
Battery chemistry	LiFePO4, Li-ion, LTODocumented claim Conditions Printed as "(LiFePO4 / Li-ion / LTO)" on the page. Location: Product title or description Printed as "(LiFePO4 / Li-ion / LTO)" on the page. Location: Product title or description Official product page · Jikong Technology Official Store: JKBMS JK-B1A8S20P Smart Active Balance BMS [1]
Communications	Bluetooth, RS485Needs confirmationThe additional information table prints "Communication Bluetooth, RS485", while the description prints "Communication: Bluetooth (Built-in), Support for RS485/CAN modules". The table's value is recorded first. Conditions Printed as "Communication Bluetooth, RS485" in the additional information table. Location: Additional information table Printed as "Communication Bluetooth, RS485" in the additional information table. Location: Additional information table Official product page · Jikong Technology Official Store: JKBMS JK-B1A8S20P Smart Active Balance BMS [1]
Continuous discharge current	200 ADocumented claim Conditions Printed as "Continuous Discharge 200A" in the additional information table. Location: Additional information table Printed as "Continuous Discharge 200A" in the additional information table. Location: Additional information table Official product page · Jikong Technology Official Store: JKBMS JK-B1A8S20P Smart Active Balance BMS [1]
Peak discharge current	400 ADocumented claim Conditions Printed as "Peak Discharge: 400A" in the description; no duration is printed. Location: Product description, technical specifications Printed as "Peak Discharge: 400A" in the description; no duration is printed. Location: Product description, technical specifications Official product page · Jikong Technology Official Store: JKBMS JK-B1A8S20P Smart Active Balance BMS [1]
Series cells	3-8SDocumented claim Conditions Printed as "Series 3-8S" in the page's additional information table. Location: Additional information table Printed as "Series 3-8S" in the page's additional information table. Location: Additional information table Official product page · Jikong Technology Official Store: JKBMS JK-B1A8S20P Smart Active Balance BMS [1]

Warranty

Certificate records

No records documented.

Sources and revisions

Jikong Technology Official Store: JKBMS JK-B1A8S20P Smart Active Balance BMSOfficial product page · Checked Oct 3, 2026https://www.shop.jkbms.com/product/jk-b1a8s20p-200a-smart-bms-1a-active-balancer-3s-8s/
CNEEL Battery Official Store product page: JK BMS 1A 2A Active Balance Lifepo4 BMS 8S 16S 24S 100A 150A 200A 500A Smart Protection Board with BluetoothPaid link.Distributor product page · Checked Oct 3, 2026https://www.cneelbattery.com/products/jk-bms-1a-2a-active-balance-lifepo4-bms-8s-16s-24s-100a-150a-200a-500a-smart-protection-board-with-bluetooth