5-in-1 Battery Meter works as a battery capacity checker, battery balancer, battery discharger, battery internal resistance tester, and also as an ESC/SERVO PPM tester BATTERY DISCHARGER - At the discharge rate of 180mA, the battery balancer discharger can discharge lithium-based battery packs to an adjustable threshold. By discharging your battery prior to charging will improve the runtime of your battery BATTERY BALANCER - The battery tester with balancer function helps to optimize your batteries performance and extend the overall lifespan by ensuring the individual cells are balanced INTERNAL RESISTANCE TESTER - For lithium-based battery packs, the battery internal resistance tester function will display the internal resistance of each individual cell. Use the battery checker tester to evaluate the health of your battery pack and decide when to discard or replace it ESC/SERVO PPM TESTER - The Servo tester supplies a reliable PPM signal to test and adjust your servo motors MaximalPower 5-in-1 Battery Meter, Intelligent Cell Meter Digital Battery Checker Battery Balancer for LiPo / LiFePO4 / Li-ion / NiCd / NiMH Battery

CABLE NOT INCLUDED!!