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4S 16V 12A Li-ion / LiPo BMS Protection Board — 18650 Cell Pack, PCM
4S 16V 12A Li-ion / LiPo BMS Protection Board 18650 Cell Pack, PCM
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$6.84 USD
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$6.84 USD
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4S 16V 12A Li-ion / LiPo BMS Protection Board — 18650 Cell Pack (PCM)
This 4S 12A BMS protection board (PCM) provides essential protection for 4-cell series Li-ion or LiPo battery packs at 16V nominal (16.8V fully charged). With overcharge, overdischarge, overcurrent, and short-circuit protection, it is designed for DIY 4S 18650 battery packs used in portable electronics, power tools, and RC applications where a moderate 12A continuous discharge rating is sufficient.
Key Specifications
| Parameter | Value |
|---|---|
| Configuration | 4S (4 cells in series) |
| Nominal Voltage | 16V (14.8V – 16.8V range) |
| Full Charge Voltage | 16.8V (4.2V per cell) |
| Continuous Discharge Current | 12A |
| Overcharge Protection | 4.25V ±0.05V per cell |
| Over-Discharge Protection | 2.5V ±0.1V per cell |
| Short-Circuit Protection | Yes (auto-recovery) |
| Compatible Cells | Li-ion / LiPo 18650, pouch cells |
4S 12A vs 4S 30A BMS — Which to Choose?
| Feature | 4S 12A (This Product) | 4S 30A |
|---|---|---|
| Continuous Current | 12A | 30A |
| Best For | Portable electronics, moderate loads | Power tools, heavy motors |
| PCB Size | Compact | Larger |
Why Choose This BMS?
- ✅ Full protection suite — overcharge, overdischarge, overcurrent, short circuit
- ✅ 4S Li-ion / LiPo compatible — works with 18650 and pouch cells
- ✅ Compact PCB — fits inside small battery enclosures
- ✅ Auto-recovery short circuit — resets automatically after fault clearance
Typical Applications
- DIY 4S 18650 battery pack for portable electronics
- RC vehicle Li-ion battery protection
- Portable power station 16V module
- Laptop battery replacement pack
- DIY power bank high-voltage module
Package Contents
- 1 × 4S 16V 12A Li-ion / LiPo BMS Protection Board (PCM)
