AirRattle.com stocks replacement aftermarket airsoft batteries for all guns sold on our site. These replacement batteries are crucial for players using AEGs. Often, the batteries included with guns are lower quality. Stock batteries usually range anywhere from 700 to 1100 milliamp-hours (mAh), whereas aftermarket batteries range from 1600 – 3000 mAh. The basic idea is that for each mAh you can fire approximately one round. This means that the higher capacity rated your battery, the fewer spares you’ll need at an airsoft event. There are batteries that need to be fully drained before you can charge them and others that have to be fully charged before the first use. Before you use your new battery, make sure to understand how to properly charge it. We carry a large selection of batteries from the most common to harder to find configurations. If you don’t see what you need, email us if you have any questions or special requests.