1.This checker will work on almost any 1-8S lipo battery. It reads individual cell voltages, and whole pack voltage.
2.There is also a low voltage alarm that will sound when the pack gets too low. The alarm voltage can be set by pressing the button on top of the unit. The voltage the alarm will sound is adjustable between individual cell voltages of 2.7v and 3.8v in .1v increments (3.3v is the default).
3.It can be used in the model as an alarm, or on the bench as a voltage checker. A very handy tool to help prevent the over discharging of lipo batteries.