#RankBoosterReview #Sponsored Rechargeable AA Batteries, Keenstone 1.2V NiMH 2400mAh AA Battery. Very cool set up these rechargeables have. the round charger is just to cool. When the batteries are ready it turnes to green so neat. Powerful batteries last longer too. No need to charge so often. Love the 8 place charger instead of 4.