Energizer Recharge Basic Battery Charger is the smart choice for saving money and batteries. Charges either 2 or 4 rechargeable AA batteries or AAA rechargeable batteries. Charger comes with 2 rechargeable AA Energizer batteries and a USB cord for charging. Has 4 slots and LED indicator so you can easily track charging progress. The auto shutoff feature helps prevent overcharging. Compact so it's easy to store when not in use. It fully charges AA and AAA batteries in 12 hours. Get reliable power with Energizer, the world's #1 rechargeable brand based on scan scales.