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.