Built-in dual IC detects the voltage of each cell. And don't forget the number of uses! Each battery can be detected and protected. Overheat protection, overvoltage protection, overvoltage protection, overload protection. The whole new series for realizes low voltage shutdown. Cooperate with many power tool factories! Stable quality and anti-vibration. The best partner of torque wrench for , impact drill and angle grinder. Color: Blue Material: Plastic Package Contents: 1 x Battery Protection Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.