Go longer without recharging thanks to these Duracell rechargeable StayCharged AA batteries. Their Ion core technology offers longer-lasting operation, and they can be recharged up to 400 times. Easily recharge the batteries for extended use. High-capacity StayCharged cells with Ion core technology offer long-lasting operation. Batteries last up to 1 year. Duralock Power Preserve™ Technology allows you to recharge the batteries up to 400 times. Each battery is individually date-coded for efficient inventory management. Batteries do not contain added mercury. Rechargeable batteries come in a pack of 2. Rechargeable & avoids disposables - designed to be used repeatedly, helping you save money and avoid single-use disposables.