3 String 12.6V 60A Lithium Battery BMS Protection Board

Suitable range: For nominal voltage 3.6V 3.7V lithium battery (Including 18650,26650, lithium polymer batteries)
Product Size: 60 x 20 x 3.4mm
Material: Metal
Charging voltage: 12.6V
Maximum output current: 20A
Maximum output power / charging power: 252W

This product is an enhanced version: suitable for electric drills with starting current below 60A.

Minimum Typical Maximum Unit
Consumable Current 12 18 24 uA
Over charge protection voltage 4.2 4.25 4.3 V
Over charge recovery voltage 4.1 4.16 4.2 V
Over charge delay time 500 1000 1500 ms
Over discharge protection voltage 2.35 2.5 2.7 V
Over discharge recovery voltage 2.9 3.2 3.3 V
Over discharge delay time 50 100 150 ms
Conduction resistance 10 12 14 mΩ
Overcurrent protection current 37 40 43 A
Over current delay time 5 10 15 ms
Normal operating current 0 20 20 A
Transient current (<10ms) 18 20 22 A
Ambient temperature -40 25 85 °C

Note 1: Successful start of the electric drill requires 3 power batteries of 15C-20C, or 6 power batteries of 10C-15C (ordinary 18650 cannot start the electric drill!! !); if it happens to be the battery is too small or the power of the electric drill is too large Please contact the owner to tell you how to solve the problem.

Note 2: Wiring 0V, 4.2V, 8.4V, 12.6V strictly according to the diagram, do not intentionally short-circuit.

Note 3: For loads with brushed motors, a capacitor (10uF-1000uF) must be connected in parallel to the positive and negative terminals of the motor to prevent the reverse peak voltage generated by the motor from interfering with the protection board or puncturing the MOS tube.

Note 4: When connecting 3 groups of batteries in series, please ensure that the voltage of each group of batteries is the same. If they are not the same, please charge each group of batteries separately and then use them in series.

Never mix good batteries and bad batteries together! The closer the capacity/internal resistance of the 3 sets of batteries, the better! (2 good batteries + 1 poor battery use effect = 3 poor battery usage effects).