Momentum Hobbies LiPo Battery Tester and Low Voltage Warning Buzzer 1-8S battery tester & low voltage buzzer Shows each cell individual and total voltages Loud low voltage buzzer alarm settable from 2.7 to 3.8 volts (ind. cell) Includes heavy duty Velco brand hook&loop fastener to mount For LiPo, LiFe, Li-Ion, and LiMn batteries