Charged Reviews
Quick reference
JK BMS B2A8S30P active balance BMS
Model: JK-B2A8S30P · SKU: JK-B2A8S30P
Prepared Nov 12, 2026
Common specifications
| Series cells | 4-8SSource [1] |
|---|---|
| Battery chemistry | LiFePO4, Li-ion, LTOSource [1] |
| Continuous discharge current | 300 ASource [1] |
| Continuous charge current | 300 ASource [3] |
| Balance current | 2 ASource [1] |
| Communications | |
| Peak discharge current | 600 ASource [1] |
| Balancing | Active balancingSource [1] |
| Heating output | Not documented |
| Weight | |
| Dimensions | |
| Enclosure volume | 0.36 L** Calculated from recorded external dimensions |
| Warranty term | Not documented |
All recorded specifications
| Balance current | 2 ADocumented claim ConditionsPrinted as "Balance Current 2A" in the additional information table; the description prints an active balancing range of "0.1A – 2.0A", so this is the maximum. Location: Additional information table Printed as "Balance Current 2A" in the additional information table; the description prints an active balancing range of "0.1A – 2.0A", so this is the maximum. Location: Additional information table |
|---|---|
| Balancing | Active balancingDocumented claim ConditionsPrinted 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 |
| Battery chemistry | LiFePO4, Li-ion, LTODocumented claim ConditionsPrinted 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 |
| Communications | BluetoothNeeds confirmationThe additional information table prints "Communication Bluetooth", while the description prints "Connectivity: Integrated Bluetooth, Support CANBus/RS485 customization.". The table's value is recorded first. ConditionsPrinted as "Communication Bluetooth" in the additional information table. Location: Additional information table Printed as "Communication Bluetooth" in the additional information table. Location: Additional information table |
| Continuous charge current | 300 ADocumented claim ConditionsPrinted as "最大充电电流 (Maximum charging current) 300 A" in the basic parameter table of the JK-B2A8S-30P specification (version 19.0.1); the same table prints "Maximum instantaneous current 600 A" separately and states no duration for the 300 A figure. Location: Basic parameter table, section 4.1, PDF page 16 Printed as "最大充电电流 (Maximum charging current) 300 A" in the basic parameter table of the JK-B2A8S-30P specification (version 19.0.1); the same table prints "Maximum instantaneous current 600 A" separately and states no duration for the 300 A figure. Location: Basic parameter table, section 4.1, PDF page 16 |
| Continuous discharge current | 300 ADocumented claim ConditionsPrinted as "Continuous Discharge 300A" in the additional information table. Location: Additional information table Printed as "Continuous Discharge 300A" in the additional information table. Location: Additional information table |
| Dimensions | 182.75 D × 127.26 D × 15.6 D mm7.2 D × 5.01 D × 0.61 D in convertedDocumented claim ConditionsPrinted as "保护板尺寸 (Protective plate size) 182.75*127.26*15.6 mm" in the basic parameter table and as 182.75mm×127.26mm×15.6mm in section 5.3; the figures are not labeled by axis, so they are stored in the order printed. Location: Basic parameter table, section 4.1, PDF page 16; section 5.3, PDF page 23 Printed as "保护板尺寸 (Protective plate size) 182.75*127.26*15.6 mm" in the basic parameter table and as 182.75mm×127.26mm×15.6mm in section 5.3; the figures are not labeled by axis, so they are stored in the order printed. Location: Basic parameter table, section 4.1, PDF page 16; section 5.3, PDF page 23 |
| Operating temperature | -30 to 70 °C-22 to 158 °F convertedDocumented claim ConditionsPrinted as "工作温度 (Operating temperature) -30-70 ℃" in the basic parameter table. Location: Basic parameter table, section 4.1, PDF page 16 Printed as "工作温度 (Operating temperature) -30-70 ℃" in the basic parameter table. Location: Basic parameter table, section 4.1, PDF page 16 |
| Peak discharge current | 600 ADocumented claim ConditionsPrinted as "Peak Discharge: 600A" in the description; no duration is printed. Location: Product description, technical specifications Printed as "Peak Discharge: 600A" in the description; no duration is printed. Location: Product description, technical specifications |
| Series cells | 4-8SDocumented claim ConditionsPrinted as "Series 4-8S" in the page's additional information table. Location: Additional information table Printed as "Series 4-8S" in the page's additional information table. Location: Additional information table |
| Weight | 0.54 kg1.19 lb convertedCalculated541 g / 1000 g per kg = 0.541 kg ConditionsPrinted as "成品重量 (Finished weight) 541 g" in the basic parameter table. Location: Basic parameter table, section 4.1, PDF page 16 Printed as "成品重量 (Finished weight) 541 g" in the basic parameter table. Location: Basic parameter table, section 4.1, PDF page 16 |
Warranty
Certificate records
No records documented.
Sources and revisions
- Jikong Technology Official Store: JKBMS JK-B2A8S30P Smart Active Balance BMS | 300A Continuous Discharge | 2A Active Balance | 4S-8S Li-ion/LiFePO4/LTO Smart BMSOfficial product page · Checked https://www.shop.jkbms.com/product/jk-b2a8s30p-300a-smart-bms-2a-active-balancer-4s-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 https://www.cneelbattery.com/products/jk-bms-1a-2a-active-balance-lifepo4-bms-8s-16s-24s-100a-150a-200a-500a-smart-protection-board-with-bluetooth
- JK-B2A8S-30P Product specification, Version 19.0.1Official datasheet · Revision 19.0.1 · 2025-03-14 · Checked https://www.jkbms.com/wp-content/uploads/2026/02/JK-B2A8S-30P-Product-specification.pdf