7.4V 4000mAh 2S LiPo Receiver Battery: Universal Receiver, EC3 is compatible with HAN1060, HAN1070, HAN2765, HAN2820, HAN2990, HAN3185, HAN4955, HAN5260, HAN9225, SPMAR12300T, SPMAR12310T, SPMAR20300T, SPMAR20310T, SPMAR400, SPMAR610, SPMAR9130T, SPMAR9140T, SPMEXEC312, SPMEXEC324, SPMYHEC36