The Predator LiPo Battery Voltage Tester doubles as both a voltage tester and a low-voltage buzzer in one small compact, easy-to-use package!
Its easy-to-read digital readout displays individual cell voltages as well as the battery's total voltage. The tester can also read the cell voltage of 1S batteries having JST connectors.
The tester also doubles as an onboard low-voltage buzzer to protect LiPo batteries from being over-discharged during use. With push button easy, you can set the alarm to the minimum voltage of your choice (between 2.7 and 3.8 volts) and the buzzer will sound when your cells have reacher the low voltage limit.