Lithium Battery (Li-on) BMS Balance Charger/Protection Board for 18650 / 26650 (3.6V / 3.7V). Charge Voltage 12.6-13V/10A. Note: Least 3 battries in series. Does not work with 1 or 2 batteries. Add Suitable Heatsink

• Nominal voltage of 3.6V, 3.7V lithium battery (including 18650,26650, polymer lithium battery)
• Product Size : 59 * 20 * 3.4mm
• Product weight : 4.3g
• Charging voltage : 12.6V - 13.0V
• Continuous discharge current (upper limit) : 20A (if the cooling environment is not good, please reduce the load current use)
• Continuous charge current (upper limit) : 10A
• Standard Edition : suitable for starting current below 40A, power 65W below the drill
• Enhanced version : for starting current below 60A, power 100W below the drill.