KUAIYU 7.4V 2000mAh Lithium Battery for Syma X8C / X8W Brand Name: KUAIYU Offer long, lasting power for your Syma X8C / X8W RC quadcopter Different from traditional alkaline batteries in its construction and chemistry High charging efficiency, long service lifeLightweight, wont add extra burden 2000mAh large capacity ensures a long fly time