Exact-model examples from checked sources
Compare the selected model and package below. A series range from the company catalog does not establish the same limits for every battery chemistry. Missing details require confirmation; a maximum or current class is not a continuous discharge rating.
| Model and package | Battery chemistry and strings | Continuous discharge | Active balancing | Specification source |
|---|---|---|---|---|
| JK-BD6A24S10P JK-BD6A24S10P | Li-ion (ternary/NMC): 7-24S; LiFePO4 (LFP): 8-24S; Lithium titanate (LTO): 14-20S | Confirm for the supplied version | 0.6 A | JKBMS JK-BxxAxxS specification V1.0 and JK-BD6AxxS-10P manual V15.0.1 (V1.0 / V15.0.1), pp. V1.0: 5-8; V15.0.1: 7-9 |
| JK-BD6A8S10P JK-BD6A8S10P | Li-ion (NMC): 3-8S; LiFePO4 (LFP): 3-8S; LTO: 7-8S | Confirm for the supplied version | 0.6 A | Company model catalog (2026-07-11), pp. 1 JK BD6A8S 10P User Manual V19.0.1 (19.0.1), pp. 8-9, 16 |
| JK-PB2A16S-30P JK-PB2A16S30P | Li-ion (ternary/NMC): 7-16S; LiFePO4 (LFP): 8-16S; Lithium titanate (LTO): 14-16S | 300 A | 2 A | Company model catalog (2026-07-11), pp. 1 JK Energy Storage Series BMS Product Specification V19.0.3, exact JK-PB2A16S-30P row, pages 1, 8-9 (V19.0.3), pp. V19.0.3: 1, 8-9 |
| JK-PB2A16S20P JK-PB2A16S20P | Li-ion (ternary/NMC): 7-16S; LiFePO4 (LFP): 8-16S; Lithium titanate (LTO): 14-16S | Confirm for the supplied version | 2 A | Company model catalog (2026-07-11), pp. 1 JKBMS JK-PB1/2A16S manual V19.0.3 and energy-storage BMS specification V24.0.1 (V19.0.3 / V24.0.1), pp. V19.0.3: 8-9, 18; V24.0.1: 8-10, 17, 19, 27-28, 31 |
| JK-B2A25S-CR60P JK-B2A25S-CR60P | Li-ion (ternary/NMC): 7-25S; LiFePO4 (LFP): 8-25S; Lithium titanate (LTO): 14-25S | Confirm for the supplied version | 2 A | JKBMS JK-B2A25S-CR60P product specification V23.0.1 (2026-09-17) (V23.0.1), pp. V23.0.1: 8-9, 21-23, 24-29 |
| JK-B2A32S-RP Standard package | Li-ion (NMC): 7-32S; LiFePO4 (LFP): 8-32S; LTO: 14-32S | Confirm for the supplied version | 2 A | Company model catalog (2026-07-11), pp. 1 JK B2A32S RP User Manual V20.1.1 (20.1.1), pp. 8-9, 20 |
Open the exact product link for its current price, full checked specifications and optional features. CAN or RS485 hardware still requires the correct inverter protocol and harness.
The short selection answer
Choose a BMS by the battery chemistry and exact series count first. Check continuous charging, continuous discharging and peak current with its duration; then select balancing, communication, display and wiring. Finally match the full model code and hardware revision to the manual, inverter protocol and harness. A larger maximum cell count, a connector or a model suffix alone does not confirm the complete fit.
If you already have suitable protection and only need extra cell equalization, review the standalone active-balancer guide. If you are sourcing an enclosure, use the caster and 6U kit guide to check physical cell fit and what the package contains.
Official JKBMS factory guide and verification
This guide is published on www.jkbms.net, the official JKBMS factory website operated for JKBMS Electronic Technology Co.,Ltd customers. Before payment or bulk purchasing, verify product recommendations through the official catalog and sales contact.
Use JKBMS Official Website Verification to confirm the official domain, company identity, and contact channel, then compare products in the official JKBMS catalog.
1. Confirm battery chemistry and series count
The first filter is the number of cells connected in series. A BMS must support the planned minimum and maximum series count for the battery chemistry and pack configuration.
Do not select a model only because its maximum string count is high enough. Confirm that the actual operating series count falls inside the supported range shown on the individual product page.
Write down the exact pack configuration, such as 16S LiFePO4 or 24S lithium-ion, before comparing model names.
JK-PB2A16S20P has chemistry-specific ranges in its revision-controlled documentation: Li-ion (ternary/NMC): 7–16S; LiFePO4 (LFP): 8–16S; Lithium titanate (LTO): 14–16S. These facts apply to the versions named on that product page, not automatically to every PB model.
Read the supporting V24.0.1 specification and match the supplied label and harness before installation.
2. Size continuous discharge current for the real load
Continuous discharge current should be matched to the normal load, inverter demand, cable size, connector limits, cooling conditions, and the protection design of the complete battery system.
A larger current label is not automatically the best choice. The BMS, busbars, cables, terminals, fuse, contactor, battery cells, and enclosure must work together as one current path.
Start with continuous demand
Estimate the current the battery will supply during normal operation, not only the inverter nameplate power.
Review temporary surges
Motor starts and inverter peaks can exceed normal current. Check how the complete system handles those events.
3. Choose active balance current by pack condition and capacity
Active balancing moves energy between cells to reduce voltage differences. The appropriate balance-current class depends on cell capacity, cell matching, the size of the imbalance, charging behavior, and how quickly correction is expected.
Higher balance current does not replace matched cells, correct compression, secure connections, suitable charging, or proper battery maintenance. It is one part of the pack-management strategy.
The JK-B1A series and JK-B2A series provide separate comparison paths for buyers who are specifically evaluating active-balance-current classes.
4. Identify monitoring, display, and communication requirements
Decide whether the project needs Bluetooth monitoring, a local LCD display, UART, CAN, RS485, GPS hardware, or another model-specific interface. The presence of a connector does not by itself confirm protocol compatibility.
For inverter-connected systems, confirm the inverter model, communication method, required protocol, cable, accessory module, and firmware expectations before ordering.
CAN or RS485 describes the communication interface, not a universal inverter protocol. Exact compatibility must be confirmed for the BMS model, inverter, cable, and protocol combination.
5. Narrow the correct JKBMS product family
Higher-series smart BMS
Use the JK-BD series page to compare models by strings, discharge current, balance current, display, and communication options.
Storage and inverter-focused selection
Use the JK-PB series page when inverter communication and storage-system monitoring are central requirements.
Compact active-balance models
Compare the dedicated B1A and B2A pages for lower-series and active-balancing-focused projects.
Displays, modules, and harnesses
Use the JKBMS accessories page to confirm displays, monitors, modules, adapters, and model-specific connection hardware.
Choose accessories and protocol requests before checkout
The current BMS catalogue offers a 4.3-inch LCD and WiFi module independently or together. The 7-inch LCD option is limited to PB-series product pages. A selected accessory is supplied once per BMS; confirm the model-specific adapter and harness rather than ordering by screen size alone.
Selecting a display or WiFi applies the 5% discount once to the BMS and those accessories. Choosing two accessories still gives 5%, not twice that percentage. A screen already included in the selected package is not charged again.
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.
The examples below use the current published catalogue and the same calculation used at checkout. They compare one BMS with one 4.3-inch display and one WiFi module. Follow the model link for the actual hardware and package; these examples are not universal compatibility recommendations.
| Exact BMS configuration | BMS alone | With 4.3-inch LCD + WiFi | Same bundle with CAN and RS485 |
|---|---|---|---|
| JK-PB2A16S20P JK-PB2A16S20P | $161.98 | $249.81 One 5% discount; saving $13.15 | $249.81 CAN and RS485 included as standard · no extra charge |
| BD6A32S15P Standard package | $178.68 | $265.68 One 5% discount; saving $13.98 | $267.68 Protocol fees added in full after the discount |
6. Use a final pre-order checklist
- Battery chemistry and exact series count
- Normal and peak system current
- Required continuous discharge rating
- Desired active balance current
- Bluetooth or local display requirement
- CAN, RS485, UART, or other interface
- Exact inverter model and protocol
- Required cables, harnesses, and modules
- Installation space and thermal conditions
- Destination, quantity, and support needs
Ready to compare actual models?
Open the JKBMS catalog or send the pack and inverter requirements for a formal product recommendation.
Official JKBMS selection FAQ
The official JKBMS selection guide is published on www.jkbms.net by JKBMS Electronic Technology Co.,Ltd, the official factory source behind the JKBMS catalog.
No. Select a JKBMS by battery chemistry, series count, continuous discharge current, balance current, communication interface, display requirement, inverter protocol, and accessory compatibility.
Verify the quote through the official domain www.jkbms.net and the official sales email zhou@jkbms.net before payment or bulk purchasing.
The current BMS catalogue offers a 4.3-inch LCD and WiFi independently or together, with a 7-inch LCD option only for PB-series products. Selecting a display or WiFi applies the 5% bundle discount once. An LCD already included in the selected package is not charged twice. Check the current configuration on the exact product page.
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.