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

$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