Battery compatibility
Chemistry changes the series range
- Li-ion (ternary/NMC)
- 7–24S
- LiFePO4 (LFP)
- 8–24S
- Lithium titanate (LTO)
- 14–24S
JKBMS JK-B1A / B2A Series
JK-B2A24S30P
$212.96Choose configuration
JK-B2A24S30P+4.3"Display
Product details
JK-B2A24S30P. Battery chemistry / strings: Li-ion (ternary/NMC): 7-24S; LiFePO4 (LFP): 8-24S; Lithium titanate (LTO): 14-24S; Continuous discharge: 300 A; Maximum discharge (not continuous): 300 A; Active balance: 2 A; Documented standard interfaces: Bluetooth, UART, display interface. Confirm shipped revision, connectors and harness.
1 / 1
Product-family image. Exact SKU appearance and supplied items are not confirmed by this image.
- Selected model
- JK-B2A24S30P
- Battery chemistry / strings
- Li-ion (ternary/NMC): 7-24S; LiFePO4 (LFP): 8-24S; Lithium titanate (LTO): 14-24S
- Continuous discharge
- 300 A
- Maximum discharge (not continuous)
- 300 A
- Active balance
- 2 A
- Documented standard interfaces
- Bluetooth, UART, display interface
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-B2A24S30P
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-B2A24S30P
- Configuration
- JK-B2A24S30P+4.3"Display
- Continuous Charge
- 300 A
- Continuous discharge
- 300 A
- Battery chemistry / strings
- Li-ion (ternary/NMC): 7-24S; LiFePO4 (LFP): 8-24S; Lithium titanate (LTO): 14-24S
- Active balance
- 2 A
- Maximum charge
- 300 A
- Maximum discharge (not continuous)
- 300 A
- Documented standard interfaces
- Bluetooth, UART, display interface
- Specification basis
- Company model catalog (2026-07-11); JKBMS JK-B2A24S-30P user manual V19.0.2 (V19.0.2)
Manual maximum values require suitable conductors, terminals, fusing, cooling and battery cells.
Manual data is revision-specific. Confirm the shipped label and harness before wiring.
HARDWARE SPECIFICATIONS
JK-B2A24S30P data by hardware revision
The V19.0.2 manual verifies chemistry-specific 7-24S/8-24S/14-24S limits, 300 A maximum charge and discharge current, 2 A active balancing, operating limits and mechanical data. Wired communication remains configuration-dependent.
Electrical limits
Use the correct rating label
- Active balance
- 2 A
- Maximum charge
- 300 A
- Maximum discharge
- 300 A
- Instantaneous current
- 600 A
- Supply voltage
- 20–100 V
- Cell-voltage accuracy
- ±3 mV
Manual maximum values require suitable conductors, terminals, fusing, cooling and battery cells.
Interfaces and functions
Standard is not the same as optional
Standard
Bluetooth · UART · display interface
Optional / suffix-dependent
CAN · RS485 · heating control · alarm output · parallel interface · ACC
- CAN and RS485 are optional and must be present in the ordered configuration.
- A physical CAN or RS485 port does not by itself confirm inverter protocol compatibility.
Mechanical and environment
Match dimensions to the label
- V19.0.2
- 208 × 120.7 × 15.6 mm · 675 g
- Operating temperature
- -30°C to 70°C
- Maximum operating power
- 1.2 W
Revision control matters.
- V19.0.2 is the newest applicable revision located in the verified package; this does not by itself prove the current shipment revision.
- Confirm the shipped label and communication suffix before using the manual's connector definitions.
TECHNICAL DOCUMENTS
Product manuals
Documentation review recorded 2026-08-03. Technical facts apply only to the named document and hardware revisions; this is not a manufacturing or stock date.
- JK-B2A24S-30P User Manual V19.0.2 · Reference pages: 4, 8-9, 17, 21-25
Before ordering
Four details that prevent the wrong configuration
- Confirm battery chemistry and exact series count.
- Confirm the expected charge/discharge duty, cable size, terminals, fuse and cooling.
- State whether CAN, RS485, heating, alarm, parallel interface or ACC is required.
- Provide the inverter brand/model and confirm protocol, firmware, cable and pinout before shipment.
Product details
Supply scope and specifications
Key features
- Continuous Charge: 300 A
- Continuous discharge: 300 A
- Battery chemistry / strings: Li-ion (ternary/NMC): 7-24S; LiFePO4 (LFP): 8-24S; Lithium titanate (LTO): 14-24S
- Active balance: 2 A
- Maximum charge: 300 A
- Maximum discharge (not continuous): 300 A
Included
- Selected configuration: JK-B2A24S30P+4.3"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-B2A24S30P
ConfigurationJK-B2A24S30P+4.3"Display
Continuous Charge300 A
Continuous discharge300 A
Battery chemistry / stringsLi-ion (ternary/NMC): 7-24S; LiFePO4 (LFP): 8-24S; Lithium titanate (LTO): 14-24S
Active balance2 A
Maximum charge300 A
Maximum discharge (not continuous)300 A
Documented standard interfacesBluetooth, UART, display interface
Specification basisCompany model catalog (2026-07-11); JKBMS JK-B2A24S-30P user manual V19.0.2 (V19.0.2)
Exact-model verification
Specifications are revision-specific. Confirm the supplied hardware and harness before installation.
JK-B2A24S30P 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
JK-B2A24S30P 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.
Which cell counts does JK-B2A24S30P support by chemistry?
V19.0.2 lists 7-24S for ternary/NMC lithium, 8-24S for LiFePO4 and 14-24S for LTO. The correct lower limit therefore depends on chemistry.
Are CAN and RS485 standard on JK-B2A24S30P?
No. Bluetooth, UART and a display interface are standard in the V19.0.2 manual; CAN and RS485 are optional, as are heating, alarm, parallel and ACC functions. Confirm the ordered configuration.
What current values are listed for JK-B2A24S30P?
The V19.0.2 manual lists 300 A maximum charge current, 300 A maximum discharge current and 600 A instantaneous current. System wiring, terminals, fusing, cells and cooling must support the intended duty.
What are the JK-B2A24S30P dimensions?
The V19.0.2 manual lists 208 × 120.7 × 15.6 mm and 675 g. Confirm that the shipped hardware revision matches before finalizing the enclosure.
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