Targerthobby 3IN1 5W Discharger Voltage Tester Balancer For Lipo Battery The balance function 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, the balancer can measure voltage of receiver battery The big LCD screen can show 6 cell batteries' condition