PULSE LIPO 5000mAh 22.2V 65C- ULTRA POWER SERIES For 550 - 600-size helicopter with 6S config(TRex 550L,Goblin570)or 700size helicopter(12S config) True 5C Charge Rates -Large AWG Wiring for Maximum Power Applications Industry Standard JST/XH Balance Taps -High discharge rate for High Power Demands The choice of pro level pl and beyond, filling the flight line with pl of all skill levels&demands Myriads of Voltages, Capacities & C Ratings - Full 90 Days Warranty Period