An essential component of every AEG (airsoft electric gun) is the battery. It provides the power necessary to run the motor and make the gun do its job. Having a good battery can really make a big difference. Anyone considering upgrading their AEG has to take the battery into consideration and almost all power upgrades include an upgraded battery. On the other hand, having a low quality battery in a top of the line AEG will drastically reduce its performance. When choosing a battery and charger, the following information is helpful to know:

Voltage - This number denotes power output of the battery. Higher voltage means more power. Higher voltage turns the motor faster which gives you a higher rate of fire (ROF). On AEGs with upgraded springs a high voltage battery is almost always necessary. This is because greater force is required to power the piston.

mAh (milliampere-hour) Rating - This number tells you how long the battery will last. A higher number means a larger battery and longer play time between re-charges. To get more specific, one ampere-hour is 3600 coulombs, which is the electrical charge needed for one hour of steady 1 ampere electrical output. One milliampere-hour is one-thousandth of an ampere-hour.

Connector Type - There are two types and two sizes of connectors. The types are male and female and the sizes are large and small. A male connector can only connect to a female connector of the same size. For example, you must connect a small male connector to a small female connector. You cannot connect a male to a male or a small to a large. If you need to connect incompatible connectors you will need a special adapter. Batteries come with female end plugs.

DC V - This is the DC Voltage output of the charger. This is the maximum battery voltage that the charger should be used to charge. I.e. do not use an 8.4 V charger to charge a 9.6 V battery.