Battery compatibility
Chemistry changes the series range
- Li-ion (ternary/NMC)
- 7–24S
- LiFePO4 (LFP)
- 8–24S
- Lithium titanate (LTO)
- 14–24S
1 / 7JKBMS JK-B1A / B2A Series
JKBMS JK-B2A24S30P Smart Active Balance BMS
7-24S/8-24S 300 A smart BMS with 2 A active balancing
JK-B2A24S30P supports 7-24S Li-ion, 8-24S LiFePO4 and 14-24S LTO packs. The V19.0.2 manual lists 300 A maximum charge and discharge current, 600 A instantaneous current and 2 A active balancing. Bluetooth, UART and display are standard; CAN, RS485, heating, alarm, parallel and ACC functions are optional and must be confirmed in the order.
- Model
- JK-B2A24S30P
- Battery fit
- Li-ion (ternary/NMC) 7–24S; LiFePO4 (LFP) 8–24S; Lithium titanate (LTO) 14–24S
- Current
- 300 A max discharge
- Active balance
- 2 A
- Manual basis
- V19.0.2
Choose configuration
Selected configuration$209.96
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MANUAL-VERIFIED TECHNICAL REFERENCE
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.
Manual basis
Documents reviewed for this page
- JK-B2A24S-30P User Manual V19.0.2Reviewed 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
- Chemistry-specific support: 7-24S Li-ion, 8-24S LiFePO4, 14-24S LTO
- Maximum charge/discharge current: 300 A; instantaneous current: 600 A
- 2 A active cell balancing and ±3 mV cell-voltage accuracy
- Standard interfaces: Bluetooth, UART and display
- Optional by configuration: CAN, RS485, heating, alarm, parallel interface and ACC
- V19.0.2 mechanical reference: 208 × 120.7 × 15.6 mm, 675 g
Included
- Selected JKBMS smart BMS model or display bundle
- Model-specific wiring harness and standard accessories supplied with the product
- Documentation or setup references supplied with the selected package
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
ModelJK-B2A24S30P
SeriesJKBMS JK-B1A / B2A Series
Battery ChemistryLi-ion (ternary/NMC) 7–24S; LiFePO4 (LFP) 8–24S; Lithium titanate (LTO) 14–24S
Series RatingLi-ion 7–24S; LiFePO4 8–24S; Lithium titanate 14–24S
Balance Current2 A active
Maximum Charge Current300 A
Maximum Discharge Current300 A
Instantaneous Current600 A
Supply Voltage20–100 V
Operating Temperature-30°C to 70°C
Cell-voltage Accuracy±3 mV
Maximum Operating Power1.2 W
Standard CommunicationBluetooth, UART, display interface
Optional CommunicationCAN, RS485, heating control, alarm output, parallel interface, ACC
DimensionsV19.0.2: 208 × 120.7 × 15.6 mm
WeightV19.0.2: 675 g
Manual RevisionV19.0.2
Detailed product information
Complete visual product guide
Review the full product illustrations, dimensions, component information, and application notes before selecting a configuration.
SELECTION HELP
Check the system requirements before ordering
SELECTION GUIDE
How to choose a JKBMS
Check strings, current, active balancing, display, and communication requirements before comparing models.
Read guideBALANCING GUIDE1A vs 2A active balancing
Understand how balance-current class relates to cell capacity, imbalance, and correction time.
Read guideCOMMUNICATION GUIDECAN vs RS485 for a BMS
Separate physical interface choice from inverter protocol and system compatibility requirements.
Read guideMODEL-SPECIFIC APPLICATION NOTES
JK-B2A24S30P selection context
JK-B2A24S30P should be compared as a specific JK-B2A series product, not only by a copied title or image. The selection should be based on the real battery system, installation space, communication needs, and official quotation or checkout configuration.Why this model matters
The electrical and mechanical values shown here come from V19.0.2. Confirm the shipment revision and optional-interface configuration before choosing a harness or finalizing the enclosure.
Application context
JKBMS JK-B2A24S30P Smart Active Balance BMS belongs to the JK-B2A series and is best reviewed for compact lithium packs where active balancing, current rating, and app monitoring are key selection inputs.
The listed battery string range is Li-ion (ternary/NMC) 7–24S; LiFePO4 (LFP) 8–24S; Lithium titanate (LTO) 14–24S. The current reference is 300 A. The active-balancing reference is 2 A active.
For communication planning, this page lists Standard: Bluetooth, UART, display interface; Optional: CAN, RS485, heating control, alarm output, parallel interface, ACC; protocol, pinout, cable, firmware, and inverter or service-tool settings still need confirmation.
Decision checks
- Battery chemistry or cell fit: Li-ion (ternary/NMC) 7–24S; LiFePO4 (LFP) 8–24S; Lithium titanate (LTO) 14–24S.
- Mechanical planning: reserve space around V19.0.2: 208 × 120.7 × 15.6 mm, cable exits, airflow, and service access.
- For direct checkout, verify the selected configuration and destination shipping before payment.
- Use www.jkbms.net and zhou@jkbms.net to verify official source, quotation, and bulk purchasing details.
Model planning
Model fit and purchase planning
Use this summary to confirm whether JKBMS JK-B2A24S30P Smart Active Balance BMS fits the battery system before checkout, quotation, or installation.
- Model
- JK-B2A24S30P
- Primary use
- Smart active-balance BMS for compact lithium packs
- Battery strings
- Li-ion (ternary/NMC) 7–24S; LiFePO4 (LFP) 8–24S; Lithium titanate (LTO) 14–24S
- Current reference
- 300 A
- Active balancing
- 2 A active
- Communication
- Standard: Bluetooth, UART, display interface; Optional: CAN, RS485, heating control, alarm output, parallel interface, ACC
- Installation size
- V19.0.2: 208 × 120.7 × 15.6 mm
Pre-order checks
- JKBMS JK-B2A24S30P Smart Active Balance BMS should be checked against the real battery pack, load current, installation space, thermal conditions, and selected accessories before purchase.
- The listed 300 A current reference must be matched with cable size, terminals, fuse or breaker, battery cells, thermal design, and expected inverter demand.
- The listed communication options are Standard: Bluetooth, UART, display interface; Optional: CAN, RS485, heating control, alarm output, parallel interface, ACC; protocol, pinout, firmware, and inverter compatibility still need project-level confirmation.
- The 2 A active balancing specification is one selection factor and does not replace matched cells, correct wiring, or suitable charging settings.
System fit checks
Compatibility, installation, and official purchase checks
Use these checks before selecting a configuration, requesting a quote, or installing the product in a battery system.
Match the product to the battery system
Confirm the battery pack is within Li-ion (ternary/NMC) 7–24S; LiFePO4 (LFP) 8–24S; Lithium titanate (LTO) 14–24S. Match the 300 A current reference to the inverter, load, wiring, protection, and thermal design. Use the 2 A active active-balancing class as one selection input, not as a substitute for good cell matching.
Confirm protocol and interface details
Communication status: Standard: Bluetooth, UART, display interface; Optional: CAN, RS485, heating control, alarm output, parallel interface, ACC. Confirm protocol, pinout, baud rate or CAN bitrate, firmware, and inverter compatibility before installation.
Plan wiring, mounting, and operating conditions
Reserve space for the listed dimensions: V19.0.2: 208 × 120.7 × 15.6 mm. Plan the installation around -30°C to 70°C operating conditions. Use suitable fusing, cable size, torque, ventilation, insulation, and commissioning checks for the final battery system.
Verify the product and quote channel
Verify this product on https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer, confirm the official domain is www.jkbms.net, and use zhou@jkbms.net for quotation checks before bulk payment or project procurement.
Product FAQ
JK-B2A24S30P manual, wiring and compatibility FAQ
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.
Is JKBMS JK-B2A24S30P Smart Active Balance BMS listed on the official JKBMS website?
JKBMS JK-B2A24S30P Smart Active Balance BMS is listed on www.jkbms.net, the official factory website operated by JKBMS Electronic Technology Co.,Ltd. Use https://www.jkbms.net and the official sales email zhou@jkbms.net to verify quotes before payment.
What is included with JKBMS JK-B2A24S30P Smart Active Balance BMS?
Selected JKBMS smart BMS model or display bundle; Model-specific wiring harness and standard accessories supplied with the product; Documentation or setup references supplied with the selected package. Not included: Battery cells, battery enclosure, inverter, charger, and external power cabling; External contactors, breakers, fuses, and installation hardware unless specified. The final selected configuration and written quotation remain the reference for supply scope.
How do payment, shipping, and returns work for JKBMS JK-B2A24S30P Smart Active Balance BMS?
Purchasable JKBMS products can be ordered from the product page. Verify the model, configuration, destination, and official sales contact before bulk purchasing or project use. Return and shipping rules are published at https://www.jkbms.net/policies.
Technical resources for this model
- JK-B2A24S30P manual and wiring diagramsOpen the document library by exact model code and confirm the manual revision before using a wiring diagram.
- JK-B2A24S30P version-specific CAN/RS485 pinout checksPin order and supported protocols can change by model and hardware revision. Use only a table that explicitly lists the exact version.
- Compare JK-B2A24S30P with nearby JKBMS modelsCompare documented battery range, current, balancing, communication and manual status in one table.
- JK-B2A24S30P JKBMS app setupUse the dedicated Android and iOS setup page, then match the app and connection method to the documented hardware revision.
Get in Touch
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Phone+86 131 6282 8868
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WeChatEmailzhou@jkbms.net
LocationRoom 1008, Building B4, Yunzhi Science & Technology Park, Guangming District, Shenzhen, China