Manufacturer and seller images. Configuration examples may include additional equipment.
Image source: JK-B2A20S20P, from JK BMS's own product page for this model. The image also shows an added badge or label.Paid link · price checked
Printed as "JK-B2A20S20P" in the title of Jikong's own store page; the CNEEL listing prints the same code as "JK-B2A20S-20P".
Official product page: Jikong Technology Official Store: JKBMS JK-B2A20S20P Smart Active Balance BMS Checked · Earlier documentLocation: Product title
Documented
Converted: 560 g / 1000 g per kg = 0.56 kg
Printed as "成品重量 (Finished weight) 560 g" in the 200A board's basic parameter table.
Official datasheet: JK-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentLocation: 200A protection board basic parameter table, PDF page 20
Converted
Jikong's specification prints the range by chemistry (8-20S (LiFePO4), 7-20S (ternary lithium/Li-ion), 14-20S (LTO)), while its store page prints "Series 8-20S". The specification's range is recorded first.
Printed in Jikong's specification's product adaptation guide as 7～20 strings for ternary lithium, 8～20 for lithium iron (LiFePO4) and 14～20 for lithium titanate (LTO) batteries, for the JK-BxA20S-15P/20P boards. Revised on 13 October 2026: this field held "8-20S" from Jikong's store page, which is kept as an alternative.
Printed as "Series 8-20S" in the page's additional information table.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A20S20P 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) 162*102*20.4 mm" in the 200A board's basic parameter table; section 5.3 prints the same size for the whole JK-BxAxxS-15P/20P series. The figures are not labeled by axis, so they are stored in the order printed.
Official datasheet: JK-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentLocation: 200A protection board basic parameter table, PDF page 20
Calculated
The additional information table prints "Communication Bluetooth, RS485", while the description prints "Communication: Integrated Bluetooth, support for RS485/CAN/GPS modules.". The table's value is recorded first.
Printed as "Communication Bluetooth, RS485" in the additional information table.
Printed as "Communication: Integrated Bluetooth, support for RS485/CAN/GPS modules." in the product description of the same page.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A20S20P 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-B2A20S20P Smart Active Balance BMS Checked · Earlier documentLocation: Product title
Documented
Printed as "Peak Discharge Current: 400A" in the description; no duration is printed.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A20S20P 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-B2A20S20P 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 section 4.2, the 200A protection board 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-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentLocation: 200A protection board basic parameter table, PDF page 20
Documented
Converted: 560 g / 1000 g per kg = 0.56 kg
Printed as "成品重量 (Finished weight) 560 g" in the 200A board's basic parameter table.
Official datasheet: JK-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentLocation: 200A protection board basic parameter table, PDF page 20
Converted
Jikong's specification prints the range by chemistry (8-20S (LiFePO4), 7-20S (ternary lithium/Li-ion), 14-20S (LTO)), while its store page prints "Series 8-20S". The specification's range is recorded first.
Printed in Jikong's specification's product adaptation guide as 7～20 strings for ternary lithium, 8～20 for lithium iron (LiFePO4) and 14～20 for lithium titanate (LTO) batteries, for the JK-BxA20S-15P/20P boards. Revised on 13 October 2026: this field held "8-20S" from Jikong's store page, which is kept as an alternative.
Printed as "Series 8-20S" in the page's additional information table.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A20S20P 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) 162*102*20.4 mm" in the 200A board's basic parameter table; section 5.3 prints the same size for the whole JK-BxAxxS-15P/20P series. The figures are not labeled by axis, so they are stored in the order printed.
Official datasheet: JK-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentLocation: 200A protection board basic parameter table, PDF page 20
Documented
The additional information table prints "Communication Bluetooth, RS485", while the description prints "Communication: Integrated Bluetooth, support for RS485/CAN/GPS modules.". The table's value is recorded first.
Printed as "Communication Bluetooth, RS485" in the additional information table.
Printed as "Communication: Integrated Bluetooth, support for RS485/CAN/GPS modules." in the product description of the same page.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A20S20P 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-B2A20S20P Smart Active Balance BMS Checked · Earlier documentLocation: Product title
Documented
Printed as "Peak Discharge Current: 400A" in the description; no duration is printed.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A20S20P 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-B2A20S20P 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 section 4.2, the 200A protection board 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-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentLocation: 200A protection board basic parameter table, PDF page 20
Documented
Printed as "LiFePO4, Li-ion, and LTO" on the page.
Official product page: Jikong Technology Official Store: JKBMS JK-B2A20S20P 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-B2A20S20P 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 2.2, 2.4, 4.2 and 5.3 (PDF pages 9, 11 to 12, 20 and 27)
Retrieved
Jikong Technology's own product specification for its 20S and 24S boards at 150A and 200A and their function options, downloaded from the Specifications list of jkbms.com's support page on October 13, 2026. The 200A board has its own basic parameter table (section 4.2) and its own function selection guide (section 2.4), which list JK-B2A20S-20P and JK-B2A24S-20P.
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/2026/02/JK-BxAxxS-15P-JK-BxAxxS-20P-Product-specification.pdf. Copyright and takedown
Printed revision date: 2025-02-08
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 67d6c570fd18f1bb1f50766f7957caf47cf057e40f2e9363f4cab18a26c81f64
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/2026/02/JK-BxAxxS-15P-JK-BxAxxS-20P-Product-specification.pdf. Copyright and takedown
Printed revision date: 2025-02-08
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 67d6c570fd18f1bb1f50766f7957caf47cf057e40f2e9363f4cab18a26c81f64
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 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 documentPrices we read at 4 stores · 54 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. | $159.99 |
| Oct 3, 2026, 11:13 AM PDT | EEL Battery (39999768100953) Paid link. | $159.99 |
| Oct 3, 2026, 11:13 AM PDT | EEL Battery (39999761317977) Paid link. | $163.99 |
| Oct 3, 2026, 11:13 AM PDT | EEL Battery (39999761350745) Paid link. | $163.99 |
| Oct 28, 2026, 1:25 AM PDT | EEL Battery (39999768100953) Paid link. | $159.99 |
| Oct 28, 2026, 1:25 AM PDT | EEL Battery (39999761317977) Paid link. | $163.99 |
| Oct 28, 2026, 1:25 AM PDT | EEL Battery (39999761350745) Paid link. | $163.99 |
| Oct 29, 2026, 1:15 AM PDT | EEL Battery (39999768100953) Paid link. | $159.99 |
| Oct 29, 2026, 1:15 AM PDT | EEL Battery (39999761317977) Paid link. | $163.99 |
| Oct 29, 2026, 1:15 AM PDT | EEL Battery (39999761350745) Paid link. | $163.99 |
| Oct 30, 2026, 1:25 AM PDT | CNEEL Battery Paid link. | $159.99 |
| Oct 30, 2026, 1:25 AM PDT | EEL Battery (39999768100953) Paid link. | $159.99 |
| Oct 30, 2026, 1:25 AM PDT | EEL Battery (39999761317977) Paid link. | $163.99 |
| Oct 30, 2026, 1:25 AM PDT | EEL Battery (39999761350745) Paid link. | $163.99 |
| Oct 31, 2026, 1:25 AM PDT | CNEEL Battery Paid link. | $159.99 |
| Oct 31, 2026, 1:25 AM PDT | EEL Battery (39999761317977) Paid link. | $163.99 |
| Oct 31, 2026, 1:25 AM PDT | EEL Battery (39999761350745) Paid link. | $163.99 |
| Nov 1, 2026, 1:05 AM PDT | CNEEL Battery Paid link. | $159.99 |
| Nov 1, 2026, 1:06 AM PDT | EEL Battery (39999768100953) Paid link. | $159.99 |
| Nov 1, 2026, 1:06 AM PDT | EEL Battery (39999761317977) Paid link. | $163.99 |
| Nov 1, 2026, 3:26 AM PST | EEL Battery (39999761350745) Paid link. | $163.99 |
| Nov 2, 2026, 1:35 AM PST | EEL Battery (39999768100953) Paid link. | $159.99 |
| Nov 2, 2026, 1:35 AM PST | EEL Battery (39999761317977) Paid link. | $163.99 |
| Nov 2, 2026, 1:35 AM PST | EEL Battery (39999761350745) Paid link. | $163.99 |
| Nov 3, 2026, 1:05 AM PST | CNEEL Battery Paid link. | $159.99 |
| Nov 3, 2026, 1:05 AM PST | EEL Battery (39999768100953) Paid link. | $159.99 |
| Nov 3, 2026, 1:05 AM PST | EEL Battery (39999761317977) Paid link. | $163.99 |
| Nov 4, 2026, 1:05 AM PST | CNEEL Battery Paid link. | $159.99 |
| Nov 4, 2026, 1:05 AM PST | EEL Battery (39999761317977) Paid link. | $163.99 |
| Nov 4, 2026, 1:05 AM PST | EEL Battery (39999761350745) Paid link. | $163.99 |
| Nov 4, 2026, 3:58 AM PST | EEL Battery (39999768100953) Paid link. | $159.99 |
| Nov 5, 2026, 1:05 AM PST | CNEEL Battery Paid link. | $159.99 |
| Nov 5, 2026, 1:05 AM PST | EEL Battery (39999768100953) Paid link. | $159.99 |
| Nov 5, 2026, 1:05 AM PST | EEL Battery (39999761317977) Paid link. | $163.99 |
| Nov 5, 2026, 1:05 AM PST | EEL Battery (39999761350745) Paid link. | $163.99 |
| Nov 6, 2026, 1:05 AM PST | CNEEL Battery Paid link. | $159.99 |
| Nov 6, 2026, 1:05 AM PST | EEL Battery (39999768100953) Paid link. | $159.99 |
| Nov 6, 2026, 1:05 AM PST | EEL Battery (39999761317977) Paid link. | $163.99 |
| Nov 6, 2026, 1:05 AM PST | EEL Battery (39999761350745) Paid link. | $163.99 |
| Nov 7, 2026, 1:15 AM PST | CNEEL Battery Paid link. | $159.99 |
| Nov 7, 2026, 1:16 AM PST | EEL Battery (39999768100953) Paid link. | $159.99 |
| Nov 7, 2026, 1:16 AM PST | EEL Battery (39999761350745) Paid link. | $163.99 |
| Nov 7, 2026, 3:46 AM PST | EEL Battery (39999761317977) Paid link. | $163.99 |
| Nov 8, 2026, 1:15 AM PST | CNEEL Battery Paid link. | $159.99 |
| Nov 8, 2026, 1:15 AM PST | EEL Battery (39999768100953) Paid link. | $159.99 |
| Nov 8, 2026, 1:15 AM PST | EEL Battery (39999761317977) Paid link. | $163.99 |
| Nov 9, 2026, 1:15 AM PST | CNEEL Battery Paid link. | $159.99 |
| Nov 9, 2026, 1:15 AM PST | EEL Battery (39999768100953) Paid link. | $159.99 |
| Nov 9, 2026, 1:15 AM PST | EEL Battery (39999761350745) Paid link. | $163.99 |
| Nov 9, 2026, 3:36 AM PST | EEL Battery (39999761317977) Paid link. | $163.99 |
| Nov 10, 2026, 1:05 AM PST | CNEEL Battery Paid link. | $159.99 |
| Nov 10, 2026, 1:05 AM PST | EEL Battery (39999761317977) Paid link. | $163.99 |
| Nov 10, 2026, 1:05 AM PST | EEL Battery (39999761350745) Paid link. | $163.99 |
| Nov 11, 2026, 2:37 AM PST | EEL Battery (39999768100953) Paid link. | $159.99 |
Recent reviews count from the latest approved revision. Verified reviews carry 19× the weight. Select a period to filter.
Showing 1 of 1 reviews
I had a battery with 16 prismatic 280Ah LFP cells which, as it turned out, were not Grade A and did not stay balanced. So, the reason for the purchase of an active balance BMS. For the first few weeks it performed very well and I was excited. Then the BMS began to spontaneously change the resistance numbers in the several of the leads. I check all connections and replaced some to make sure I hadn't done something wrong. The problem got worse and eventually there was an error message saying one of the cells was bad. I ordered 16 new prismatic cells and installed the same BMS on those. It wasn't long before it overcharged two of the cells so badly that they were swollen and unusable. Contacting the company was an exercise in futility. All they did was request more information over and over again. Some of which required me to leave the BMS installed, which I refused to do because of the previous damage. What I got out of my interaction with the company is that they believe they make a perfect product and that if there is a problem it is the fault of the customer. They have stop communication with me and I lost $160.
This category has no Evidence score.
No certificates on file. Certificate guide
No sourced accessories or replacement parts listed yet.
Hyphenated form Jikong prints in its specification (section 2.4, PDF pages 11 to 12) for this model.
Official datasheet: JK-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.4, PDF pages 11 to 12): 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-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.4, PDF pages 11 to 12): 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-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.4, PDF pages 11 to 12): the standard board with heating added ("标配+加热"). One basic parameter table covers every option; not a separate product.
Official datasheet: JK-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.4, PDF pages 11 to 12): 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-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.4, PDF pages 11 to 12): 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-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentFunction option of the same board in Jikong's function selection guide (section 2.4, PDF pages 11 to 12): 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-BxAxxS-15P / JK-BxAxxS-20P Product specification, Version 19.1.1 Rev 19.1.1 · February 8, 2025 · Checked · Earlier documentManufacturer SKU JK-B2A20S20P
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.
