---Safe to use,the lithium-ion battery comes with built-in over-charge, over-discharge, over-voltage, over-current, and over-heating protections. ---Environmental friendly ---Low self-discharge ---Low internal resistance ---Long cycle life, chargeable up to 500 times ---compatible with Arlo Pro, Arlo Pro 2 cameras. ---NOTE: Do NOT compatible with Arlo Ultra/Ultra 2 Camera, Arlo Pro 3/Pro 4 Camera. ---Battery Specification Brand Name?Eeyrnduy Model Number:A-1B Type:Rechargeable lithium-ion Battery Operating Temperature:Discharge :-20-55 /degree C/ Charge: 0-55 degree C Charging time:Fast Charge Cycle life:500 Times Typical Capacity?2440mAh Typical Voltage?7.2V Power:17.57 watt What's in the Box ? 2 Rechargeable lithium-ion batteries.