This is a 4 pack of AA Rechargeable NiMH Batteries from Duracell. Now, there's no need to walk around with a pocketful of traditional AA batteries. With Duracell rechargeable NiMH batteries, one set of these will get you through just about anything. Featuring a low drain design, these 2650mAh batteries can power anything from today's digital cameras to various other electronic equipment. Duracell offers NiMH batteries in AA and AAA sizes, plus a range of chargers designed to provide you the charge time you need.