Connector: JST2.54Male. Specifications: 11.1V three and three stringsCombination mode: 3S3P. 3.7V 9600mAh 3 Cell Lithium ion Large capacity Rechange Battery 2 Pin Connector. 2S1P 7.4V 18650 Li-ion Battery 1200-3200MAH Built in BMS Protection XH 2.54 Plug.
eBay