I bought these to use in Radio Microphones so need a product with a dependable mAh rating. I use a professional charger which indicates all the 8 batteries I bought fail to come close to the 2900mAh rating even after putting them on charge/discharge cycles to prepare them for use. Even after using the refresh cycle on my charger not one of the batteries came off at anywhere near 2900mAh typically varying between 2400 and 2450mAh. Uniross 2700mAh rated batteries regularly achieve 2800mAh so I would go for those or try another brand if you want a dependable long lasting AA nimh cell.