Compact E-flite® Thrust™ Series lithium polymer batteries are rated at 35C to offer an excellent power-punch without a major weight penalty. Four capacity sizes are available from 850mAh to 1800mAh with the 1000mAh and 1300mAh packs rounding out the middle of the range. These batteries come with the popular EC3™ connector with silicone insulated wire for a level of durability that can be appreciated at all performance levels. The output and balance leads are short to make installation on FPV racers as sleek as possible. Like the popular line of E-flite® High-Power Li-Po batteries, its JST-XH balance connector is compatible with a wide range of popular chargers such as those from Orion® and Dynamite®. A 3C charge rating means that these batteries can be fast charged safely. If you're looking for a compact 4S Li-Po pack to suit your electric powered aircraft, choose an E-flite Thrust™ Series battery and go for it!