SODIAL(R)3 in 1 RC 2s-6s LCD Li-Po Battery Balancer Voltage Meter Tester + Discharger Can be executed before/after battery charged, or during battery charging process, to ensure battery pack keeping in excellent condition. Safe and convenient: it supplies instant voltage reading and indicates abnormal cell immediately. Allow Li-Polymer/Li-Fe 2-6 cell balancing and discharging. With its JST connector for external power, can measure voltage of receiver battery. The LCD screen can show 6 cell batteries' condition.