The GT Power Battery Meter/Balancer/Servo Tester is a compact, multi-functional tool designed for RC (Radio Control) enthusiasts to check and manage batteries and servos. It verifies individual cell voltages, provides balancing and discharging functions for 2-8S LiPo/LiHv/LiFe/Li-ion and Ni-MH batteries, and includes a PPM servo tester for checking servo functionality. The device displays total voltage, individual cell voltages, battery capacity percentage, and cell voltage differences, helping to ensure battery health, performance, and safety.