3S 40A 12.6V Cell 18650 Li-ion Lithium Battery Charging BMS Board Balanced Charging Module

3S 40A Li-ion Lithium Battery Charger and Protection BMS PCB Module for 18650 Li-ion Batteries. This board provides balanced charging, overcharge, over-discharge, and short-circuit protection to ensure long battery life and safe operation. Ideal for DIY battery packs, e-bikes, and other lithium battery projects. Buy online in Pakistan.

Features:

• 3S 12.6V Li-ion battery protection board with AUTO recovery function
• Supports 18650, 26650, and polymer lithium batteries
• Balanced charging for longer battery lifespan
• Safe overcharge, over-discharge, and short-circuit protection

Specifications:

• Product Size: 42 x 60 x 3.4mm (balanced version)
• Weight: 9.8g
• Charging Voltage: 12.6V – 13.6V
• Continuous Discharge Current: 40A (reduce load if cooling is insufficient)
• Continuous Charge Current: 20A

Package Included:

• 1 x 3S 40A Li-ion Lithium Battery Protection PCB Board

Important Notes:

• Use high-quality batteries: Three 15C-20C power batteries or six 10C-15C batteries required for heavy load applications.
• Follow correct wiring: Connect at 0V, 4.2V, 8.4V, 12.6V and avoid short circuits.
• For brush motors, connect a non-polar capacitor (10uF-100uF, ≥25V) to protect the MOSFET from reverse spikes.
• Ensure battery voltages are matched in series for balanced performance; mixing good and poor batteries can reduce efficiency.