18650 Lithium Battery Protection Board BMS 3S 40A 11.1V 12.6V PCB with Balance for Drill Motor Charger

Precise Details:

Description:

Introducing our 3S 12.6V 40A lithium battery protection board, equipped with an AUTO Recovery function for enhanced performance.

• Compatibility: Designed for lithium batteries with a nominal voltage of 3.7V, including 18650, 26650, and polymer lithium batteries.
• Dimensions: 41 x 60 x 3.4mm (Balanced version)
• Charging Voltage: 12.6V - 13.6V
• Continuous Discharge Current (Upper Limit): 40A (Reduce load current if cooling environment is inadequate)
• Continuous Charge Current (Upper Limit): 20A

Balanced Version: Ideal for electric drills with a starting current below 80A and power below 170W, featuring a balanced charging function.

Important Notes:

1. Successful operation requires either three 15C-20C power batteries or six 10C-15C power batteries. Please note that ordinary 18650 batteries cannot start the drill.
2. When wiring 0V, 4.2V, 8.4V, 12.6V, follow the wiring diagram strictly. Avoid short circuits.
3. It's normal for the "430" resistor to heat during charging, indicating a functioning balance circuit. If it heats without charging, check for incorrect wiring.
4. Avoid mixing good and poor batteries. Ensure each battery has similar capacity and internal resistance.
5. Balanced charging is supplementary. Do not mix good and poor batteries. Ensuring similar capacity/resistance in the battery sets enhances performance.

Package Includes:

• 1/3/5/10 x BMS 3S 40A 18650 Lithium Battery Protection Board (quantity optional)