9X2700U : 7.2 volt 2700mAh rechargeable NiMH battery for the HiTEC Aurora 9x transmitter.  These are the highest capacity, and highest quality battery cells available.  Replaces original battery # 54130.  These battery packs are manufactured in the U.S.A. by BATTERIES AMERICA.
Re-charges with stock NiMH Charger, or with stand-alone smart chargers such as YT-0006S, UP100AC, X4AC Pro, etc