Exo-abilities are a key feature of the Call of Duty Advanced Warfare Online Multiplayer where special abilities can be chosen from the pick 13 system. It has been confirmed by Michael Condrey on his twitter account that these abilities drain the battery on use and each player only has one battery per life which cannot be recharged. This will add balance meaning players will have to choose more carefully when to take advantage of them meaning players cannot abuse them.
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@RuggedSavior none of them recharge. They are all based off a battery that drains on use. The battery is per life.
— Michael Condrey (@MichaelCondrey) August 22, 2014