The POWER MAG III eliminates the need for using expensive AA batteries in your EDGE Series cellular trail camera. Each cartridge equals the power of 18 AA batteries. FeaturesSave Money - The rechargeable POWER MAG III can save you up to $300 in AA batteries over the life of your camera.Works Better In The Cold - The rechargeable lithium battery outperforms AA batteries in cold weather.Fast Charging - The POWER MAG III supports fast charging USB-C power cords. (Fast charger not included).Never-Ending Power - Pair the POWER MAG III with a SOLAR POWER PACK, and your camera will have continuous power.