1S 3.7V 200mAh 35C Li-Po Battery Made by Microheli Co., Ltd; Microheli Co., Ltd is a United States based company; parts are sourced from Global producers Microheli Co., Ltd part number 2001S35 This item works with: E-Flite Blade msR RTF, Blade mSR X, Blade Red Bull 130 X, Blade Scout CX