JK BMS B2A32SRP relay version active balance BMS

By JK BMSSKU JK-B2A32SRP

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Key specs

Units
SKU
JK-B2A32SRP
Official product page
Sources

Printed as "JK-B2A32SRP" in the title of Jikong's own store page; Jikong's specification prints the same model as "JK-B2A32S-RP". The Amazon listing was only a lead.

Official product page: Jikong Technology Official Store: JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS (October 21, 2026 capture) Checked · Earlier document

Location: Product title

Documented

Weight
1.28 kg2.82 lb converted
Converted: 1280 g / 1000 g per kg = 1.28 kg
Official datasheet
Sources

Converted: 1280 g / 1000 g per kg = 1.28 kg

Printed as "成品重量 (Finished weight) 1280 g" in the basic parameter table.

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Basic parameter table, section 4.1, PDF page 20

Converted

Series cells
8-32S (LiFePO4), 7-32S (ternary lithium), 14-32S (LTO)
Official datasheet
Sources

Printed in the specification's adaptation guide as 7~32 strings for ternary lithium, 8~32 for lithium iron and 14~32 for lithium titanate batteries; the store page prints "Series 8-32S".

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier documentOfficial product page: Jikong Technology Official Store: JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS (October 21, 2026 capture) Checked · Earlier document

Location: Product adaptation guide, section 2.2, PDF page 9; store page additional information table

Documented

Dimensions
1.13 L
Calculated: Enclosure volume: W × H × D ÷ 1,000,000
234.6 × 157.5 × 30.5 mm9.24 × 6.2 × 1.2 in convertedOfficial datasheet
Sources

Printed as "保护板尺寸 (Protective plate size) 234.6*157.5*30.5 mm" in the basic parameter table and as 234.6mm×157.5mm×30.5mm in section 5.3; the figures are not labeled by axis, so they are stored in the order printed.

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Basic parameter table, PDF page 20; section 5.3, PDF page 29

Calculated

Communications
Bluetooth, UART, RS485, CAN and display interface (all standard)
Official datasheet
Sources

Printed in the function configuration table as "蓝牙功能 (Bluetooth function)", "UART接口 (UART interface)", "RS485", "CAN" and "显示屏接口 (Display interface)", each "标配 (Standard option)"; the store page prints "Communication ACC, Bluetooth, CAN, Display, Heating Function, RS485, UART".

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier documentOfficial product page: Jikong Technology Official Store: JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS (October 21, 2026 capture) Checked · Earlier document

Location: Product function configuration table, section 2.1, PDF page 8; store page additional information table

Documented

Heating output
Heating function standard, designed heating current 10A (not a stated wattage)
Official datasheet
Sources

Printed as "加热功能 (Heating function) 标配 (Standard option)" in the function configuration table and "The designed heating current is 10A." in section 3.4, which recommends heating wire of no less than 16 AWG.

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Product function configuration table, section 2.1; section 3.4, Heating function

Documented

Balancing
Active balancing
Official datasheet
Sources

Printed on the cover as "Lithium battery active balancing protection board".

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Cover

Documented

Balance current
2 A
Official datasheet
Sources

Printed as "最大均衡电流 (Maximum balancing current) 2 A" in the basic parameter table; the store page prints "Balance Current 2A".

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier documentOfficial product page: Jikong Technology Official Store: JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS (October 21, 2026 capture) Checked · Earlier document

Location: Basic parameter table, section 4.1, PDF page 20

Documented

Continuous charge current
300 A
Official datasheet
Sources

Printed as "最大充电电流 (Maximum charging current) 300 A" in the basic parameter table, with the note "Replacing the shunt resistor allows for a higher charging current."

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Basic parameter table, section 4.1, PDF page 20

Documented

All specs11
Weight
1.28 kg2.82 lb converted
Converted: 1280 g / 1000 g per kg = 1.28 kg
Official datasheet
Sources

Converted: 1280 g / 1000 g per kg = 1.28 kg

Printed as "成品重量 (Finished weight) 1280 g" in the basic parameter table.

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Basic parameter table, section 4.1, PDF page 20

Converted

Series cells
8-32S (LiFePO4), 7-32S (ternary lithium), 14-32S (LTO)
Official datasheet
Sources

Printed in the specification's adaptation guide as 7~32 strings for ternary lithium, 8~32 for lithium iron and 14~32 for lithium titanate batteries; the store page prints "Series 8-32S".

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier documentOfficial product page: Jikong Technology Official Store: JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS (October 21, 2026 capture) Checked · Earlier document

Location: Product adaptation guide, section 2.2, PDF page 9; store page additional information table

Documented

Dimensions
234.6 D × 157.5 D × 30.5 D mm9.24 D × 6.2 D × 1.2 D in converted
Official datasheet
Sources

Printed as "保护板尺寸 (Protective plate size) 234.6*157.5*30.5 mm" in the basic parameter table and as 234.6mm×157.5mm×30.5mm in section 5.3; the figures are not labeled by axis, so they are stored in the order printed.

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Basic parameter table, PDF page 20; section 5.3, PDF page 29

Documented

Communications
Bluetooth, UART, RS485, CAN and display interface (all standard)
Official datasheet
Sources

Printed in the function configuration table as "蓝牙功能 (Bluetooth function)", "UART接口 (UART interface)", "RS485", "CAN" and "显示屏接口 (Display interface)", each "标配 (Standard option)"; the store page prints "Communication ACC, Bluetooth, CAN, Display, Heating Function, RS485, UART".

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier documentOfficial product page: Jikong Technology Official Store: JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS (October 21, 2026 capture) Checked · Earlier document

Location: Product function configuration table, section 2.1, PDF page 8; store page additional information table

Documented

Heating output
Heating function standard, designed heating current 10A (not a stated wattage)
Official datasheet
Sources

Printed as "加热功能 (Heating function) 标配 (Standard option)" in the function configuration table and "The designed heating current is 10A." in section 3.4, which recommends heating wire of no less than 16 AWG.

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Product function configuration table, section 2.1; section 3.4, Heating function

Documented

Balancing
Active balancing
Official datasheet
Sources

Printed on the cover as "Lithium battery active balancing protection board".

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Cover

Documented

Balance current
2 A
Official datasheet
Sources

Printed as "最大均衡电流 (Maximum balancing current) 2 A" in the basic parameter table; the store page prints "Balance Current 2A".

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier documentOfficial product page: Jikong Technology Official Store: JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS (October 21, 2026 capture) Checked · Earlier document

Location: Basic parameter table, section 4.1, PDF page 20

Documented

Continuous charge current
300 A
Official datasheet
Sources

Printed as "最大充电电流 (Maximum charging current) 300 A" in the basic parameter table, with the note "Replacing the shunt resistor allows for a higher charging current."

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Basic parameter table, section 4.1, PDF page 20

Documented

Battery chemistry
Ternary lithium (Li-ion), LiFePO4, LTO
Official datasheet
Sources

Printed in the adaptation guide as "三元锂电池 (Ternary lithium battery)", "铁锂电池 (Lithium iron battery)" and "钛酸锂电池 (Lithium titanate battery)".

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Product adaptation guide, section 2.2, PDF page 9

Documented

Continuous discharge current
300 A
Official datasheet
Sources

Printed as "最大放电电流 (Maximum discharge current) 300 A" in the basic parameter table, with the note "Replacing the shunt resistor allows for a higher discharging current."; the store page prints "Continuous Discharge 300A". No duration is printed.

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier documentOfficial product page: Jikong Technology Official Store: JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS (October 21, 2026 capture) Checked · Earlier document

Location: Basic parameter table, section 4.1, PDF page 20

Documented

Operating temperature
-30 to 70 °C-22 to 158 °F converted
Official datasheet
Sources

Printed as "工作温度 (Operating temperature) -30-70 ℃" in the basic parameter table.

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Location: Basic parameter table, section 4.1, PDF page 20

Documented

Published claims and calculations, not independent test results.

Documents

2 on file
  • PDF
    JK-B2A32S-RP Product specification, Version 20.1.1OfficialChengdu Jikong Technology Co., Ltd. (JK BMS)Official datasheet
    Source details
    Revision
    20.1.1
    Revision date
    Not stated

    Archived copy captured on 2026-10-21.

    Location: Sections 2.1, 2.2, 3.4, 4.1 and 5.3 (PDF pages 8, 9, 11, 20 and 29)

    Retrieved

    Jikong Technology's own bilingual (Chinese and English) specification for its JK-B2A32S-RP relay-version board, version 20.1.1, downloaded from the Specifications list of jkbms.com's support page and linked from the JK-B2A32SRP store page; captured October 21, 2026. Manufacturer claims, not independent tests.

    Archived copies

    Archived copy of a document published by Chengdu Jikong Technology Co., Ltd. (JK BMS). 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 20.1.1 · 30.55 MB

    Archived copy, unaltered, kept as a record of what Chengdu Jikong Technology Co., Ltd. (JK BMS) published. Original address: https://www.jkbms.com/wp-content/uploads/2026/03/JK-B2A32S-RP-Product-specification-V20.1.1.pdf. Copyright and takedown

    Source first found
    This copy captured
    Archived
    File detailsOriginal source
    Pages
    34
    Embedded creation date
    Embedded modification date

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

    SHA-256: da864b9d40198857e648a6e8e8bda9d44f7fe097540eb8aae848b1643685fad5

    Open
  • WEB
    Jikong Technology Official Store: JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS (October 21, 2026 capture)OfficialChengdu Jikong Technology Co., Ltd. (JK BMS)Official product page
    Source details
    Revision
    Not stated
    Revision date
    Not stated

    Archived copy captured on 2026-10-21.

    Location: Product title, technical specifications list and additional information table

    Retrieved

    Jikong Technology's own product page for this model on its official store (shop.jkbms.com), captured October 21, 2026. A product page with marketing text, a short technical list and an additional-information table, not a datasheet; customer reviews on the page are not used.

    Open

Archive and older revisions

Archive and older revisions0

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

Archived documents

JK-B2A32S-RP Product specification, Version 20.1.1

Archived copy of a document published by Chengdu Jikong Technology Co., Ltd. (JK BMS). 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 20.1.1 · 30.55 MB

Archived copy, unaltered, kept as a record of what Chengdu Jikong Technology Co., Ltd. (JK BMS) published. Original address: https://www.jkbms.com/wp-content/uploads/2026/03/JK-B2A32S-RP-Product-specification-V20.1.1.pdf. Copyright and takedown

Source first found
This copy captured
Archived
File detailsOriginal source
Pages
34
Embedded creation date
Embedded modification date

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

SHA-256: da864b9d40198857e648a6e8e8bda9d44f7fe097540eb8aae848b1643685fad5

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Model history

Model identity

Model
JK-B2A32SRP
Published model / SKU
JK-B2A32S-RP

Hyphenated form Jikong prints in its specification (cover and section 2.2) for this model.

Official datasheet: JK-B2A32S-RP Product specification, Version 20.1.1 Rev 20.1.1 · Checked · Earlier document

Manufacturer SKU JK-B2A32SRP

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