Quick Specifications
| Model | JK-B5A24S |
|---|---|
| Dimensions | 182 x 121 x 29 mm |
| Balance | 0.1~5A |
| Strings | 2~24S |
| Accessories | Balance wire harness (P1 / P2 / P3 connectors) |
| Application Scenarios | Small sightseeing cars, scooters, shared e-bikes, battery power systems, base station backup, solar power stations, and pack maintenance and repair., large-capacity packs needing fast equalization |
Quick Specifications
| Model | JK-B5A24S |
|---|---|
| Dimensions | 182 x 121 x 29 mm |
| Balance Current | 0.1~5A |
| Cell Strings | 2~24S |
| Supply Voltage | 40~100V |
| Communication | Bluetooth + mobile app |
| Accessories | Balance wire harness (P1 / P2 / P3 connectors) |
| Application Scenarios | Small sightseeing cars, scooters, shared e-bikes, battery power systems, base station backup, solar power stations, and pack maintenance and repair., large-capacity packs needing fast equalization |
Product Overview
The JK-B5A24S is a 5A high-current active balancer for large 2–24S lithium packs that need fast equalization. Its supercapacitor transfer circuit pushes up to 5A between cells — independent of voltage difference — so even wide capacity spreads close quickly.
Housed on a 182 x 121 x 29 mm board with P1/P2/P3 connectors, it keeps finished packs within 3mV, runs self-powered from 40–100V, and configures over Bluetooth. Like the smaller units, it cascades for strings beyond 24S.
Core Features
- 5A Fast Equalization: Supercapacitor-based transfer at up to 5A closes large capacity spreads fast — no resistor heat, no dependence on voltage delta.
- ≤3mV Post-Balance Accuracy: ±3mV acquisition precision holds finished packs within a 3mV cell spread.
- Wire Resistance Detection: Balance-lead resistance checks catch loose or corroded contacts before they become failures.
- Bluetooth App Control: Real-time monitoring and parameter setup from a mobile app, with low-voltage shutdown guarding the pack.
- Cascadable Design: Link multiple units to cover battery strings over 24S without changing the setup workflow.
- Flexible Power: Self-powered from the battery or an external 40–100V DC source; draws 10mA balanced / 6mA idle at 100V.
Application Scenarios
Built for big packs that cycle hard, the JK-B5A24S handles Small sightseeing cars, scooters, shared e-bikes, battery power systems, base station backup, solar power stations, and pack maintenance and repair., plus large-capacity series lithium packs needing fast equalization.
Frequently Asked Questions
Does the JK-B5A24S replace my BMS?
No. The JK-B5A24S is a standalone active balancer that works alongside your existing BMS. The BMS keeps handling protection (over-charge, over-discharge, short circuit); the JK-B5A24S focuses on keeping every cell at the same voltage.
What is the balancing current of the JK-B5A24S?
The JK-B5A24S balances at up to 5A, transferring energy from the strongest cells to the weakest ones. Higher balancing current means a large or badly imbalanced pack reaches equilibrium much faster.
Can the JK-B5A24S work with fewer than 24 cells?
Yes. The JK-B5A24S supports any pack from 2 to 24 cells in series. Unused balance leads are connected according to the wiring diagram included with the unit — if you are unsure, send us your pack layout and we will confirm the wiring.
Do you offer wholesale pricing on the JK-B5A24S?
Yes. JKBMS supplies the JK-B5A24S to battery pack assemblers, distributors and brands worldwide. Click Request a Quote above for wholesale pricing, OEM/ODM customization options and lead times.