Zeasun RCR123A Batteries 700mAh Capacity, Lasts 20.5% Longer than other common RCR123A Batteries. Built-in PCB protects against: Overcharge, Over-discharge and Short-circuit.Environmentally friendly and not easy to crack. : Input:DC 5.0V Output: DC 4.2V–500mA*2 Cut-off Voltage:4.2V ± 0.05V Working Temperature:0-40°C Measurement: 3.9x 1.9 x 0.78 in / 10x 5 x...