These are the most powerful GP Rechargeable AA Batteries at 2600mAh and now available in the brand new plastic free packaging. These GP 2600 rechargeable AA batteries have an improved minimum capacity of 2600mAh, making these the most powerful GP rechargeable AA batteries available, replacing the previous 2550mAh 2700 series. GP Batteries continue to improve these Professional AA rechargeable NiMH batteries. These brand new GP 2600mAh Rechargeable AA batteries also hold their charge longer. Up to 70% of their charge will be retained after 6 months.Â