2 Pack Olight 3400mAh Protected 18650 Rechargeable Li-ion Batteries with EdisonBright AA/AAA alkaline battery sampler pack.- Designed for M22 M21X M20S S20 M18 SR51 TM26 TM15 TM11 P12 SRT7 SRT6 P25 EC25 TK75 PD35 PD32 TK22 M21X BT20 i4 and other High Drain Devices

Features
500 Charge/discharge cycles
Triple over-heat protection
Over-discharge protection
High capacity at low temperature (-10°C)
Higher capacity and lower weight than other rechargeable batteries
Higher energy density


Specifications:
Battery Size: 18650
Chemistry: Li-ion
Voltage: 3.6V
Capacity: 3400mAh
Charge current: 1700mA (0.5C)
Maximum charge current: 3600mA (1C)
Maximum discharge current: 4200mA
Diameter: 0.7" (18.6mm)
Height: 2.7" (69.5mm)
Weight: 1.7 oz (49g)

Comes with EdisonBright AA/AAA alkaline battery sampler pack.