Specifications: Size: D Rechargeable Capacity: 4000 mAh Chemistry: Nickel Metal Hydride (NiMH) Voltage: 1.2V Brand: Accupower Included Qty: 1 Features: No memory effect Reliable service life Long-Lasting Performance Recharges up to 1000 Cycles Saves you hundreds of dollars compared to Alkaline batteries Can be replaced in any product that uses D Batteries