3S 12V 12A BMS | 18650 Lithium Battery Protection Board | 11.1V–12.6V | Balanced | Anti-Overcharge & Over-Discharge Protection BMS

Specifications:
Battery Type: 3S 18650 Lithium-ion / Li-ion battery pack
Nominal Voltage: 11.1V (fully charged 12.6V)
Discharge Current: 12A (continuous)
Charge Current: Standard charging up to 12A
Balance Function: Built-in balance to ensure uniform charging of all cells
Protection Features:
Overcharge protection
Over-discharge protection
Overcurrent protection
Short-circuit protection
Operating Voltage Range: 2.5V–4.25V per cell
Size: Compact, lightweight PCB for DIY battery packs
Applications: Power banks, LED lights, e-bikes, solar packs, DIY electronics
Installation: Easy solder pad connection for 3S battery pack
Description:
The 3S 12V 12A BMS (Battery Management System) is designed to protect and extend the life of 18650 lithium-ion battery packs. With support for 3 cells in series (3S), it ensures safe operation by providing overcharge, over-discharge, overcurrent, and short-circuit protection. The built-in balancing function keeps all cells evenly charged, improving efficiency and battery lifespan. Compact and reliable, it is perfect for DIY battery packs, LED lighting systems, power banks, and small energy storage projects.

Applications:
18650 lithium-ion battery pack protection
LED lighting systems & emergency lamps
DIY power banks & solar storage
Small e-bikes and scooter battery packs
Electronic projects requiring stable 12V supply