This battery is compatible with almost all torches and provides a great balance of capacity and price. They have over charge and under charge protection built into the battery and can be recharged 400-500 times before needing to be replaced. Panasonic inside. $4.98 per Amp hour.
Model No: ORB-186P26
Capacity (mAh): 2600
Maximum Charge Current: 2600mA (1C)
Maximum Discharge Current: 4200mA
Charge Current: 1300mA (0.5C)
Charging Cycle: 500 times
Dimensions: Dia 18.6mm, Length 69.5mm (D x H)