Manufacturer and seller images. Configuration examples may include additional equipment.
Image source: JK BMS JK-B2A8S20P, on a plain background, from JK BMS's own product page for this model.Paid link · price checked
Printed as "JK-B2A8S20P" in the title of Jikong's own store page; the CNEEL listing prints the same code as "JK-B2A8S-20P".
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Product title
Documented
Converted: 424 g / 1000 g per kg = 0.424 kg
Printed as "成品重量 (Finished weight) 424 g" in the basic parameter table. One table covers the JK-B1A8S-20P and JK-B2A8S-20P.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentLocation: Basic parameter table, PDF page 16
Converted
Jikong's specification prints the range by chemistry (3-8S (LiFePO4 and ternary lithium/Li-ion), 7-8S (LTO)), while its store page prints "Series 4-8S". The specification's range is recorded first.
Printed in Jikong's specification's product adaptation guide as 3～8 strings for ternary lithium and for lithium iron (LiFePO4) batteries and 7～8 for lithium titanate (LTO) batteries. Revised on 13 October 2026: this field held "4-8S" from Jikong's store page, which is kept as an alternative.
Printed as "Series 4-8S" in the page's additional information table.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Product adaptation guide, section 2.2 (PDF page 9)
Documented
Printed as "保护板尺寸 (Protective plate size) 152.25*127.26*15.6 mm" in the basic parameter table; the figures are not labeled by axis, so they are stored in the order printed.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentLocation: Basic parameter table, PDF page 16
Calculated
The additional information table prints "Communication Bluetooth, UART", while the description prints "Communication: Bluetooth (Standard), support CANBus/RS485 customization.". The table's value is recorded first.
Printed as "Communication Bluetooth, UART" in the additional information table.
Printed as "Communication: Bluetooth (Standard), support CANBus/RS485 customization." in the product description of the same page.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Additional information table
Documented
Printed as "Smart Active Balance BMS" in the product title.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Product title
Documented
Printed as "Peak Discharge: 400A" in the description; no duration is printed.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Product description, technical specifications
Documented
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.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Additional information table
Documented
Printed as "最大充电电流 (Maximum charging current) 200 A" in the basic parameter table; the same table prints "Maximum instantaneous current 400 A" separately and states no duration for the 200 A figure.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentLocation: Basic parameter table, PDF page 16
Documented
Converted: 424 g / 1000 g per kg = 0.424 kg
Printed as "成品重量 (Finished weight) 424 g" in the basic parameter table. One table covers the JK-B1A8S-20P and JK-B2A8S-20P.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentLocation: Basic parameter table, PDF page 16
Converted
Jikong's specification prints the range by chemistry (3-8S (LiFePO4 and ternary lithium/Li-ion), 7-8S (LTO)), while its store page prints "Series 4-8S". The specification's range is recorded first.
Printed in Jikong's specification's product adaptation guide as 3～8 strings for ternary lithium and for lithium iron (LiFePO4) batteries and 7～8 for lithium titanate (LTO) batteries. Revised on 13 October 2026: this field held "4-8S" from Jikong's store page, which is kept as an alternative.
Printed as "Series 4-8S" in the page's additional information table.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Product adaptation guide, section 2.2 (PDF page 9)
Documented
Printed as "保护板尺寸 (Protective plate size) 152.25*127.26*15.6 mm" in the basic parameter table; the figures are not labeled by axis, so they are stored in the order printed.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentLocation: Basic parameter table, PDF page 16
Documented
The additional information table prints "Communication Bluetooth, UART", while the description prints "Communication: Bluetooth (Standard), support CANBus/RS485 customization.". The table's value is recorded first.
Printed as "Communication Bluetooth, UART" in the additional information table.
Printed as "Communication: Bluetooth (Standard), support CANBus/RS485 customization." in the product description of the same page.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Additional information table
Documented
Printed as "Smart Active Balance BMS" in the product title.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Product title
Documented
Printed as "Peak Discharge: 400A" in the description; no duration is printed.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Product description, technical specifications
Documented
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.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Additional information table
Documented
Printed as "最大充电电流 (Maximum charging current) 200 A" in the basic parameter table; the same table prints "Maximum instantaneous current 400 A" separately and states no duration for the 200 A figure.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentLocation: Basic parameter table, PDF page 16
Documented
Printed as "(LiFePO4, Li-ion, LTO)" on the page.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Product title or description
Documented
Printed as "Continuous Discharge 200A" in the additional information table.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A8S20P Smart Active Balance BMS Checked · Earlier documentLocation: Additional information table
Documented
Published claims and calculations, not independent test results.
Archived copy captured on 2026-10-13.
Location: Sections 2.3, 4.1 and 5.3 (PDF pages 9, 16 and 23)
Retrieved
Jikong Technology's own product specification for the JK-B1A8S-20P and JK-B2A8S-20P boards and their function options, downloaded from the Specifications list of jkbms.com's support page on October 13, 2026. One document covers the 1A and 2A balance versions; the basic parameter table prints both balance currents and one set of other values.
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 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/2026/04/JK-BxA8S-20P-Product-specification.pdf. Copyright and takedown
Printed revision date: 2025-04-27
Embedded dates are file metadata, not independent proof of publication.
SHA-256: db7dcc69086c43ee408ecb83b934527553bf169df4a53b5434d1835e30b364ad
Archived copy captured on 2026-10-03.
Location: Product title, product description and additional information table
Retrieved
Jikong Technology's own product page for this model on its official store (shop.jkbms.com, "Jikong Technology Official Store", linked as "OFFICIAL SHOP" from jkbms.com), captured October 3, 2026. A product page with marketing text and a short additional-information table, not a datasheet; no datasheet for this exact model was found.
Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.
Archived copy captured on 2026-10-03.
Location: Product title, purchase options and specification block
Retrieved
The product page of this listing on the CNEEL Battery Official Store (cneelbattery.com), EEL's official store, captured October 3, 2026. For this BMS board the store is a retailer, not the maker: the page is cited to show that the store sells this exact model, and no recorded value rests on it. Its title, options and specification text are the store's own claims as printed.
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 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/2026/04/JK-BxA8S-20P-Product-specification.pdf. Copyright and takedown
Printed revision date: 2025-04-27
Embedded dates are file metadata, not independent proof of publication.
SHA-256: db7dcc69086c43ee408ecb83b934527553bf169df4a53b5434d1835e30b364ad
No warranty terms on file.
Affiliate links below. Affiliate disclosure
Price for one unit, as listed by the seller. Does not include tax and shipping. Price checked .
The seller lists this as a new unit. Condition checked .
Official store listing: CNEEL Battery Official Store product listing Paid link.Checked · Earlier documentPrice for one unit, as listed by the seller. Does not include tax and shipping. Price checked .
The seller lists this as a new unit. Condition checked .
Official store listing: EEL Battery product listing Paid link.Checked · Earlier documentPrice for one unit, as listed by the seller. Does not include tax and shipping. Price checked .
The seller lists this as a new unit. Condition checked .
Official store listing: EEL Battery product listing Paid link.Checked · Earlier documentPrice for one unit, as listed by the seller. Does not include shipping. Price checked .
The seller lists this as a new unit. Condition checked .
Distributor product page: CNEEL Battery Official Store product data for its JK BMS listing (cneelbattery.com, October 28, 2026 capture) Paid link.Checked · Earlier documentDistributor product page: CNEEL Battery Official Store product page for its JK BMS listing (cneelbattery.com, October 28, 2026 capture) Paid link.Checked · Earlier documentPrice for one unit, as listed by the seller. Does not include shipping. Price checked .
The seller lists this as a new unit. Condition checked .
Distributor product page: CNEEL Battery Official Store product data for its JK BMS listing (cneelbattery.com, October 28, 2026 capture) Paid link.Checked · Earlier documentDistributor product page: CNEEL Battery Official Store product page for its JK BMS listing (cneelbattery.com, October 28, 2026 capture) Paid link.Checked · Earlier documentPrice for one unit, as listed by the seller. Does not include shipping. Price checked .
The seller lists this as a new unit. Condition checked .
Distributor product page: EEL Battery product data for its JK BMS listing (eelbattery.myshopify.com, October 28, 2026 capture) Paid link.Checked · Earlier documentDistributor product page: EEL Battery product page for its JK BMS listing (eelbattery.myshopify.com, October 28, 2026 capture) Paid link.Checked · Earlier documentPrice for one unit, as listed by the seller. Does not include shipping. Price checked .
The seller lists this as a new unit. Condition checked .
Distributor product page: EEL Battery product data for its JK BMS listing (eelbattery.myshopify.com, October 28, 2026 capture) Paid link.Checked · Earlier documentDistributor product page: EEL Battery product page for its JK BMS listing (eelbattery.myshopify.com, October 28, 2026 capture) Paid link.Checked · Earlier documentPrices we read at 7 stores · 41 readings from to
Since · Listing price (USD)
A break in a line is a gap in our readings: no price is drawn for days we did not read.
| Checked (UTC) | Seller | Price |
|---|---|---|
| Oct 3, 2026, 11:13 AM PDT | CNEEL Battery Paid link. | $105.99 |
| Oct 3, 2026, 11:13 AM PDT | EEL Battery (39999768133721) Paid link. | $105.99 |
| Oct 3, 2026, 11:13 AM PDT | EEL Battery (39999761449049) Paid link. | $109.99 |
| Oct 27, 2026, 8:00 PM PDT | CNEEL Battery Official Store (48205444153646) Paid link. | $104.99 |
| Oct 27, 2026, 8:00 PM PDT | CNEEL Battery Official Store (51103732269358) Paid link. | $114.99 |
| Oct 27, 2026, 8:00 PM PDT | EEL Battery (40187119599705) Paid link. | $104.99 |
| Oct 27, 2026, 8:00 PM PDT | EEL Battery (40187119632473) Paid link. | $109.99 |
| Oct 28, 2026, 1:25 AM PDT | EEL Battery (39999768133721) Paid link. | $105.99 |
| Oct 28, 2026, 1:25 AM PDT | EEL Battery (39999761449049) Paid link. | $109.99 |
| Oct 29, 2026, 1:15 AM PDT | EEL Battery (39999768133721) Paid link. | $105.99 |
| Oct 29, 2026, 1:15 AM PDT | EEL Battery (39999761449049) Paid link. | $109.99 |
| Oct 30, 2026, 1:25 AM PDT | CNEEL Battery Paid link. | $105.99 |
| Oct 30, 2026, 1:25 AM PDT | EEL Battery (39999768133721) Paid link. | $105.99 |
| Oct 30, 2026, 1:25 AM PDT | EEL Battery (39999761449049) Paid link. | $109.99 |
| Oct 31, 2026, 1:25 AM PDT | CNEEL Battery Paid link. | $105.99 |
| Oct 31, 2026, 1:25 AM PDT | EEL Battery (39999761449049) Paid link. | $109.99 |
| Nov 1, 2026, 1:05 AM PDT | CNEEL Battery Paid link. | $105.99 |
| Nov 1, 2026, 1:06 AM PDT | EEL Battery (39999768133721) Paid link. | $105.99 |
| Nov 1, 2026, 1:06 AM PDT | EEL Battery (39999761449049) Paid link. | $109.99 |
| Nov 2, 2026, 1:35 AM PST | EEL Battery (39999768133721) Paid link. | $105.99 |
| Nov 2, 2026, 1:35 AM PST | EEL Battery (39999761449049) Paid link. | $109.99 |
| Nov 3, 2026, 1:05 AM PST | EEL Battery (39999761449049) Paid link. | $109.99 |
| Nov 4, 2026, 1:05 AM PST | EEL Battery (39999768133721) Paid link. | $105.99 |
| Nov 4, 2026, 2:21 AM PST | CNEEL Battery Paid link. | $105.99 |
| Nov 4, 2026, 3:58 AM PST | EEL Battery (39999761449049) Paid link. | $109.99 |
| Nov 5, 2026, 1:05 AM PST | CNEEL Battery Paid link. | $105.99 |
| Nov 5, 2026, 1:05 AM PST | EEL Battery (39999768133721) Paid link. | $105.99 |
| Nov 5, 2026, 1:05 AM PST | EEL Battery (39999761449049) Paid link. | $109.99 |
| Nov 6, 2026, 1:05 AM PST | EEL Battery (39999768133721) Paid link. | $105.99 |
| Nov 6, 2026, 1:05 AM PST | EEL Battery (39999761449049) Paid link. | $109.99 |
| Nov 7, 2026, 1:15 AM PST | CNEEL Battery Paid link. | $105.99 |
| Nov 7, 2026, 1:16 AM PST | EEL Battery (39999768133721) Paid link. | $105.99 |
| Nov 7, 2026, 1:16 AM PST | EEL Battery (39999761449049) Paid link. | $109.99 |
| Nov 8, 2026, 1:15 AM PST | CNEEL Battery Paid link. | $105.99 |
| Nov 8, 2026, 1:15 AM PST | EEL Battery (39999768133721) Paid link. | $105.99 |
| Nov 9, 2026, 1:15 AM PST | CNEEL Battery Paid link. | $105.99 |
| Nov 9, 2026, 1:15 AM PST | EEL Battery (39999768133721) Paid link. | $105.99 |
| Nov 9, 2026, 1:15 AM PST | EEL Battery (39999761449049) Paid link. | $109.99 |
| Nov 10, 2026, 1:05 AM PST | CNEEL Battery Paid link. | $105.99 |
| Nov 10, 2026, 1:05 AM PST | EEL Battery (39999768133721) Paid link. | $105.99 |
| Nov 10, 2026, 1:05 AM PST | EEL Battery (39999761449049) Paid link. | $109.99 |
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No certificates on file. Certificate guide
No sourced accessories or replacement parts listed yet.
Hyphenated form Jikong prints in its specification (section 2.3, PDF page 9) for this model.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.3, PDF page 9): the standard board with CAN communication added ("标配+CAN通信"). One basic parameter table covers every option; not a separate product.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.3, PDF page 9): the standard board with RS485 communication added ("标配+RS485通信"). One basic parameter table covers every option; not a separate product.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.3, PDF page 9): the standard board with CAN and RS485 communication added ("标配+CAN通信+RS485通信"). One basic parameter table covers every option; not a separate product.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.3, PDF page 9): the standard board with heating added ("标配+加热"). One basic parameter table covers every option; not a separate product.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.3, PDF page 9): the standard board with heating and CAN communication added ("标配+加热+CAN通信"). One basic parameter table covers every option; not a separate product.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.3, PDF page 9): the standard board with heating and RS485 communication added ("标配+加热+RS485通信"). One basic parameter table covers every option; not a separate product.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.3, PDF page 9): the standard board with heating, CAN and RS485 communication added ("标配+加热+CAN通信+RS485通信"). One basic parameter table covers every option; not a separate product.
Official datasheet: JK-BxA8S-20P Product specification, Version 19.2.1 Rev 19.2.1 · April 27, 2025 · Checked · Earlier documentManufacturer SKU JK-B2A8S20P
No historical observations recorded yet.
Links to DIY Solar Forum threads. The title is the forum's own words. It is a member's experience, not a Charged test, not a verified fault rate, and not a statement by the maker.
No recalls or legal notices on file; this is not a complete recall or court search. All notices · Report a notice
1.0 (1)Something wrong that is not one of the values above?
Prices · price basis. * Calculated; estimates labeled. Value needs confirmation; select it for the reason.
