Monster Cable MB 4-UHCRC AA Ultra 2100 Digital Camera Power 2100 mAh 4-Pack, with Digital Charger Only 1 hour charger for Monster 2100 PowerCells. Charges AA or AAA Monster PowerCells. Specifically engineered for high-drain electronics, such as MP3 players and digital cameras. Includes Charger &amp; 4 2100 AA PowerCells.