Battery compatibility
Chemistry changes the series range
- Li-ion (ternary/NMC)
- 3–8S
- LiFePO4 (LFP)
- 3–8S
- Lithium titanate (LTO)
- 7–8S
JKBMS JK-B1A / B2A Series
JK-B1A8S-10P
$100.14Choose configuration
JK-B1A8S10P+3.2″ Display
Product details
JK-B1A8S-10P. Battery chemistry / strings: Li-ion (ternary/NMC): 3-8S; LiFePO4 (LFP): 3-8S; Lithium titanate (LTO): 7-8S; Maximum discharge (not continuous): 100 A; Continuous current (catalog): 100 A; duty limits require confirmation; Active balance: 1 A; Documented standard interfaces: Bluetooth, UART, display interface. Confirm shipped revision, connectors and harness.
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Product-family image. Exact SKU appearance and supplied items are not confirmed by this image.
- Selected model
- JK-B1A8S-10P
- Battery chemistry / strings
- Li-ion (ternary/NMC): 3-8S; LiFePO4 (LFP): 3-8S; Lithium titanate (LTO): 7-8S
- Maximum discharge (not continuous)
- 100 A
- Active balance
- 1 A
- Documented standard interfaces
- Bluetooth, UART, display interface
- Configuration
- JK-B1A8S10P+3.2″ Display
Choose configuration
BMS features
US$1 / BMSH = heating interface, C = CAN, R = RS485. Each added feature is US$1 per BMS, added after the 5% bundle discount. Features already included in this model are not charged again.
Final modelJK-B1A8S10P
Complete your BMS
Save 5%Choose a display or WiFi module. Save 5% on your BMS and these selected accessories.
The 5% saving applies once to your BMS and selected display or WiFi accessories.
All extras are optional. You can continue without adding any.
Selected SKU facts
- Selected model
- JK-B1A8S-10P
- Configuration
- JK-B1A8S10P+3.2″ Display
- Continuous current (catalog)
- 100 A; duty limits require confirmation
- Battery chemistry / strings
- Li-ion (ternary/NMC): 3-8S; LiFePO4 (LFP): 3-8S; Lithium titanate (LTO): 7-8S
- Active balance
- 1 A
- Maximum charge
- 100 A
- Maximum discharge (not continuous)
- 100 A
- Documented standard interfaces
- Bluetooth, UART, display interface
- Specification basis
- Company model catalog (2026-07-11); JK product specification V19.1.1, exact JK-B1A8S-10P adaptation row and function selection table, pages 1, 8-9, 16 (V19.1.1)
These are manual maximum values. Continuous current duty and complete-system conductor, fuse and thermal design require confirmation.
Manual data is revision-specific. Confirm the shipped label and harness before wiring.
HARDWARE SPECIFICATIONS
JK-B1A8S-10P data by hardware revision
The V19.1.1 exact-model table names JK-B1A8S-10P, verifies chemistry-specific string limits, 100 A maximum charge and discharge current, 1 A active balancing, and standard Bluetooth, UART and display interfaces. Wired interfaces and heating are suffix-specific.
Electrical limits
Use the correct rating label
- Active balance
- 1 A
- Maximum charge
- 100 A
- Maximum discharge
- 100 A
- Instantaneous current
- 200 A
These are manual maximum values. Continuous current duty and complete-system conductor, fuse and thermal design require confirmation.
Interfaces and functions
Standard is not the same as optional
Standard
Bluetooth · UART · display interface
Optional / suffix-dependent
CAN · RS485 · heating control
Additional standard functions
charge overvoltage and overcurrent protection · discharge undervoltage and overcurrent protection · short-circuit protection
- CAN, RS485 and heating are defined by the exact function-selection suffix. A base model does not include every optional function.
Mechanical and environment
Match dimensions to the label
Revision control matters.
- These facts apply only to JK-B1A8S-10P V19.1.1. Confirm the shipped revision, ordered suffix, connector pinout and harness. Other model suffixes do not inherit this profile.
TECHNICAL DOCUMENTS
Product manuals
Documentation review recorded 2026-10-12. Technical facts apply only to the named document and hardware revisions; this is not a manufacturing or stock date.
- JK product specification (includes JK-B1A8S-10P and its documented suffix table) V19.1.1 · Reference pages: 1, 8-9, 16
Before ordering
Four details that prevent the wrong configuration
- Confirm battery chemistry and exact series count.
- Confirm JK-B1A8S-10P and V19.1.1 on the shipped hardware label.
- Confirm the exact suffix and fitted communication/heating connectors.
- Confirm current duty, balancing configuration, supplied display, harness and accessory packing list.
Product details
Supply scope and specifications
Key features
- Continuous current (catalog): 100 A; duty limits require confirmation
- Battery chemistry / strings: Li-ion (ternary/NMC): 3-8S; LiFePO4 (LFP): 3-8S; Lithium titanate (LTO): 7-8S
- Active balance: 1 A
- Maximum charge: 100 A
- Maximum discharge (not continuous): 100 A
- Documented standard interfaces: Bluetooth, UART, display interface
Included
- Selected configuration: JK-B1A8S10P+3.2″ Display
- 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-B1A8S-10P
ConfigurationJK-B1A8S10P+3.2″ Display
Continuous current (catalog)100 A; duty limits require confirmation
Battery chemistry / stringsLi-ion (ternary/NMC): 3-8S; LiFePO4 (LFP): 3-8S; Lithium titanate (LTO): 7-8S
Active balance1 A
Maximum charge100 A
Maximum discharge (not continuous)100 A
Documented standard interfacesBluetooth, UART, display interface
Specification basisCompany model catalog (2026-07-11); JK product specification V19.1.1, exact JK-B1A8S-10P adaptation row and function selection table, pages 1, 8-9, 16 (V19.1.1)
Exact-model verification
Specifications are revision-specific. Confirm the supplied hardware and harness before installation.
JK-B1A8S-10P manuals and wiringJK BMS app downloads and compatibilityCompare this configurationBMS selection and accessory pricing guideProtocol choices and inverter compatibilityCurrent product facts — textCurrent product facts — JSONProduct FAQ
JKBMS JK-B1A8S10P Smart Active Balance BMS compatibility, configuration and purchase FAQ
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.
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