Walkera Original Lipo Battery 7.4V 15C 800mAh for Walkera DEVO F4 F7 FPV Transmitter Shipping from USA Walkera Original Lipo Battery 7.4V 15C 800mAh for Walkera DEVO F4 F7 FPV Transmitter Used for: Walkera DEVO F4 F7 FPV Transmitter Package size: 5 * 3 * 1cm / 2 * 1.2 * 0.4in Package weight: 45g / 1.6oz