JKBMS
JKBMS JK-B2A8S30P | 300A Smart BMS for High-Current RV & Backup Power | 4S-8S LiFePO4 Li-ion | 2A Active Balance
JKBMS JK-B2A8S30P | 300A Smart BMS for High-Current RV & Backup Power | 4S-8S LiFePO4 Li-ion | 2A Active Balance
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Maximum Current for Mobile Power — JKBMS JK-B2A8S30P 300A Smart BMS for 4S–8S Systems
When your 12V or 24V lithium battery system needs to handle 300A continuous — think high-draw RV inverters, large marine house banks, or heavy-duty backup power — the JK-B2A8S30P is built for the job. With 2A active balancing and Bluetooth + UART for LCD display monitoring as standard, it delivers the current capacity and cell management precision that high-performance low-voltage systems demand.
Compatible chemistries: LiFePO4 / Li-ion / LTO
Key Specifications
| Parameter | Specification |
|---|---|
| Model | JK-B2A8S30P |
| Cell Configuration | 4S – 8S (12V – 24V) |
| Continuous Current | 300A |
| Active Balance Current | 2A |
| Standard Communication | Bluetooth + UART (LCD display port) |
| Compatible Chemistry | LiFePO4, Li-ion, LTO |
| Protection | Over-charge, Over-discharge, Over-current, Short-circuit, Over/Under-temperature |
300A + 2A Active Balance — Built for Serious Low-Voltage Applications
⚡ 2A Active Balancing at 300A — Protecting a High-Investment Pack
A 300A 12V or 24V lithium pack is a significant investment. The JK-B2A8S30P's 2A active balancer continuously transfers energy between cells — keeping every cell matched through thousands of high-current cycles.
🛶 High-Draw RV & Marine Systems
Running a 3000W+ inverter, air conditioning, or multiple high-draw appliances from a 12V–24V lithium bank requires a BMS that won't flinch at 300A sustained loads.
🔋 Heavy-Duty Backup Power
For 12V–24V backup power systems protecting critical loads, 300A capacity means your system can handle sudden high-current demands without tripping.
Who Is This BMS For?
- 🛶 High-draw RV & marine house battery systems (12V–24V, 300A)
- 🔋 Heavy-duty backup power systems
- 🔦 Large portable power stations and off-grid installations
- 🏭 OEM manufacturers of 12V–24V 300A lithium battery packs
Compare Versions — Find the Right Fit
| Feature | Standard (This Model) | HC Version | HCR Version |
|---|---|---|---|
| Bluetooth | ✅ | ✅ | ✅ |
| UART (LCD port) | ✅ | ✅ | ✅ |
| CAN Bus | ❌ | ✅ | ✅ |
| Heating Film Control | ❌ | ✅ | ✅ |
| RS485 | ❌ | ❌ | ✅ |
| Soft Parallel (PLINK Module) | ❌ | ✅ | ✅ |
| Hard Parallel (Parallel Module) | ❌ | ❌ | ✅ |
| Buzzer Alert | ❌ | ❌ | ✅ |
📩 Not sure which version fits? Contact us.
Custom Configuration Available
All JKBMS products support feature customization for OEM orders — including communication interfaces, protection thresholds, balance parameters, and hardware configuration. 📩 Contact us to discuss your custom requirements.
OEM / ODM & Bulk Orders
📩 For wholesale pricing, MOQ, and custom configurations, please contact us directly.
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