JKBMS JK-B1A / B2A Series
JKBMS JK-B1A8S20P Smart Active Balance BMS
B1A/B2A smart active-balance BMS for DIY and system battery packs$82.98View product
JKBMS JK-B1A / B2A Series
JK-B1A20S15P
$89.38Choose configuration
1 / 1
- Selected model
- JK-B1A20S15P
- Battery chemistry / strings
- Li-ion (NMC): 7-20S; LiFePO4 (LFP): 8-20S; LTO: 14-20S
- Continuous discharge
- 150 A
- Active balance
- 1.0 A
- Documented standard interfaces
- Bluetooth, UART, display interface
- Configuration
- JK-B1A20S15P
Selected SKU facts
- Selected model
- JK-B1A20S15P
- Configuration
- JK-B1A20S15P
- Active balance
- 1.0 A
- Continuous Charge
- 150 A
- Continuous discharge
- 150 A
- Battery chemistry / strings
- Li-ion (NMC): 7-20S; LiFePO4 (LFP): 8-20S; LTO: 14-20S
- Documented standard interfaces
- Bluetooth, UART, display interface
- Specification basis
- Company model catalog (2026-07-11); JK B2AxxS 15P 20P User Manual V19.1.1 (19.1.1)
Manual data is revision-specific. Confirm the shipped label and harness before wiring.
Product details
Supply scope and specifications
Key features
- Active balance: 1.0 A
- Continuous Charge: 150 A
- Continuous discharge: 150 A
- Battery chemistry / strings: Li-ion (NMC): 7-20S; LiFePO4 (LFP): 8-20S; LTO: 14-20S
- Documented standard interfaces: Bluetooth, UART, display interface
Included
- Selected configuration: JK-B1A20S15P
- Exact harness and supplied items require confirmation against the packing list.
Not included
- Battery cells, battery enclosure, inverter, charger, and external power cabling
- External contactors, breakers, fuses, and installation hardware unless specified
- Onsite installation, commissioning, firmware setup, or inverter configuration service
Selected modelJK-B1A20S15P
ConfigurationJK-B1A20S15P
Active balance1.0 A
Continuous Charge150 A
Continuous discharge150 A
Battery chemistry / stringsLi-ion (NMC): 7-20S; LiFePO4 (LFP): 8-20S; LTO: 14-20S
Documented standard interfacesBluetooth, UART, display interface
Specification basisCompany model catalog (2026-07-11); JK B2AxxS 15P 20P User Manual V19.1.1 (19.1.1)
TECHNICAL SPECIFICATIONS
JK-B1A20S15P parameter details
Hardware revisions and optional interfaces may differ; confirm the supplied revision before wiring or changing protection settings. This chart summarizes current information for this exact model; use the revision-matched manual for wiring.
View specifications as text
| Selected model | JK-B1A20S15P |
|---|---|
| Configuration | JK-B1A20S15P |
| Active balance | 1.0 A |
| Continuous Charge | 150 A |
| Continuous discharge | 150 A |
| Battery chemistry / strings | Li-ion (NMC): 7-20S; LiFePO4 (LFP): 8-20S; LTO: 14-20S |
| Documented standard interfaces | Bluetooth, UART, display interface |
| Specification basis | Company model catalog (2026-07-11); JK B2AxxS 15P 20P User Manual V19.1.1 (19.1.1) |
Detailed product information
Product overview
Exact-model verificationDownloads & support
No exact-model manual association is confirmed for the selected configuration.
Product FAQ
JKBMS JK-B1A20S15P Smart Active Balance BMS compatibility, configuration and purchase FAQQuestions & answers
How do I choose the correct BMS for my battery?
Provide the chemistry, exact series count, continuous charge and discharge current, and peak current with its duration. Then check balancing current, installation space, cooling, inverter, hardware revision and matched wiring. Nominal voltage, a series name or a similar connector alone does not establish compatibility.
Can I add a 4.3-inch display and WiFi module to this BMS?
Yes. The current catalogue offers these options for this BMS, independently or together. Each selected accessory is supplied once per BMS; a display already included in the selected package is not charged twice. Confirm the adapter and harness for the supplied hardware revision.
Do two selected accessories give a 10% discount?
No. Selecting a display or WiFi applies the 5% discount once to the BMS and those accessories. Two accessories do not double the discount. H/C/R feature fees do not trigger or receive the discount and are added in full afterwards.
Can this BMS be ordered with a 7-inch display?
The 7-inch display option is limited to the PB series and is not offered for this BMS. Use the display choices listed on this page and confirm the adapter and harness.
Can I add heating, CAN and RS485, and what do they cost?
H means heating interface, C means CAN and R means RS485. All PB-series models and B2A32S-RP include CAN and RS485 as standard: no selection or extra charge is needed. Each feature not already included costs USD 1 per BMS. Features included in the model are not offered or charged again. The final model retains existing feature letters and adds only newly selected options in H, C, R order, preserving any existing PB suffix. Option fees are added after any 5% bundle discount and do not trigger it. Confirm the model, hardware revision, application protocol and harness for your inverter.
Does CAN or RS485 guarantee compatibility with my inverter?
No. Confirm the exact inverter and BMS models, hardware revision, application protocol, firmware, pinout, cable and settings. A website selection or a matching connector does not prove that the two devices can communicate.
Get in Touch
Ready to power your future? Contact us for a custom quote or partnership inquiry.
Phone+86 131 6282 8868
WhatsApp
WeChatEmailzhou@jkbms.net
LocationRoom 1008, Building B4, Yunzhi Science & Technology Park, Guangming District, Shenzhen, China
Total$89.38