14,8V 4400mAh ,Li-ion generic, compatible . PART NUMBER(P/N): BTP-650, BTP-800SY, SQ-1100, SQ-2100, SQU-202, 916-2320, 916-2450, 916-2480 , 916-2750, BT.FR103.001, BT.FR103.002, BT.FR107.001 , BT.T2303.001, BT.T2306.001, BT.T2905.001, SQ-1100, SQ-2100, BTT2303001 .