EV-PEAK 50W 3A Intelligent Battery Charger 4S LiHV Battery Charger for UAV/FPV Drones Safe, Simple and Fast; CE FCC ROHS CCC CB PSE UL GS RCM certification; M5001 focus on simplifing the redundant operation, users could use it without instruction; Charging Mode: Balance Battery Type : LiHV 4S