Flyzone 3S 11.1V 2100mAh 20C LiPo Battery FEATURES: Made to fit the Sensei trainer INCLUDES: 2100mAh 11.1V LiPo Battery with SuperTigre Female Connector and Balancing Connector REQUIRES: Battery charger, GPMM3319 This battery was originally equipped with a SuperTigre Female Connector. If wanting to use battery with the ORIGINAL Sensei, the Star Plug must be removed and the SuperTigre Female Plug (SUPM0001) soldered on. If using with the Sensei FS, no modification is required.