Don't get caught draining your lipo batteries down too far as it can damage your batteries - plug one of the cell checkers on to the balance plug of your lipo battery and an alarm will sound when your battery is done.

Also has a cell voltage display to show you how much juice you have left.

Works with 1 -8 cell batteries & has on option to change the voltage that the alarm will sound - usefull for setting up helicopters differently from Rc Cars.

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