This multifunction gadget not only checks battery voltage and capacity, but also outputs PPM signal for servo test.

This 2" LCD battery checker provides you with an affordable way to monitor the condition of your batteries and allows you to easily see the total voltage, capacity, individual cell voltage, lowest & highest cell voltage, as well as the voltage difference between cells on 2S to 7S Lithium batteries with a simple tap of the buttons. You can also use the checker to monitor the total voltage of Nickel chemistry transmitter and receiver batteries from 4 to 7 cells.