I used to use duracell rechargable 2650mah batteries, now im using duracell active charge 2000mah, they are awesome and they don't lose the charge even if a year has passed...
And now duracell has a 15minute charger which is pretty awesome together with they'r active charge rechargable AA's, if u run out of batteries (I never run out of batteries), u fully charge them in 15 minutes..., but it's not recomended, because it will reduce the 1000 rechargable times to like 500 (i use the slow charger)...
ps: i have duracell 8x 2650 mah rechargable batteries, duracell 4x 2000mah active charge, and a few more of other marks, but for the gamepad i use only the active charge, they last very long and dont lose the charge for a long time...
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