Features: - ARB-L14-1600U is a high-capacity 14500 Li-ion rechargeable battery with a built-in micro-USB charging port. - It also includes a protection circuit in the anode to help prevent short circuits, overcharge/discharge, and overheating. - This battery can quickly be charged without the need for a separate charger. This not only saves you money from purchasing a charger but also the convenience of not having to carry around another device. - This will work in all the models that utilize the standard AA battery. This battery is a great rechargeable alternative to an alkaline AA battery. - Micro-USB charging port 1600mAh high capacity Protection circuitry to prevent short circuits - Pressure vents to prevent explosions 500 charge cycles Indicator light on battery is red while charging, blue when charged Voltage: 1.5V - Charging Current: Only charge using a USB cable to the micro USB port on the battery. - Do not charge by other device - Charging Current USB Port: 300mA - Weight: 0.67 ounces (19g) - Size: Length: 1.97? (50mm) - Diameter: 0.57? (14.5mm)