4S 5A Lithium Battery BMS Protection Board 14.8V 16.8V Same-Port Charge Discharge PCB Overcharge Over-Discharge Over-Current Short-Circuit Protection For 14500 Li-ion Battery Packs DIY Power Projects

Product Description:

4S 5A lithium battery protection board designed for 14.8V 14500 Li-ion battery packs. Its same-port design uses one connector for charging and discharging, making it suitable for custom battery assembly, portable power supplies, and DIY power projects.

Core Selling Points:

Provides overcharge, over-discharge, over-current, and short-circuit protection for lithium battery cells. The same-port configuration simplifies wiring, while the compact PCB layout supports easy installation in DIY battery packs, portable power applications, and small electronic devices.

Technical Specifications:

Series: 4S

Rated Current: 5A

Nominal Voltage: 14.8V

Charge Cutoff Voltage: 16.8V

Battery Type: 14500 Li-ion Battery

Port Type: Same port for charge and discharge

Protection: Overcharge, over-discharge, over-current, and short-circuit protection

Application: DIY 14500 battery pack and portable power supply

Before Purchase:

Confirm that your battery configuration uses 14500 Li-ion cells and matches the 4S arrangement, 14.8V nominal voltage, and 16.8V charge cutoff voltage. Charging and discharging use the same port. The board is rated for 5A and is intended for compatible DIY battery pack applications.