EB-N4000D-BT SubC Button Top Rechargeable BatteryThese Nickel Cadmium D cells are excellent for building custom battery packs. If you are a novice or an old pro, these batteries will keep you powered up. These batteries can be recharged 500-1000 times giving you years of use.Features:High quality D Size rechargeable NiCd battery.Provides long use time per charge with this very high 4000mAh capacity.Designed for enhanced performance for high drain applications such as emergency lighting, portable devices, power tools.Rapidly charging at 1C rate and reliable cycle life up to 1000 times at 0.2C rate.Excellent quality and the best price.Specifications:Output Voltage: 1.2VAmperage: 4000mAhChemistry: NiCDBattery Size: DHeight: 2.37"Diameter: 1.27"Terminal Type: Button TopCompatibility:Bao Tong: TYD4000 Ikelite: 1808851 Interstate Batteries: AASC0500 Panasonic: P400D Powersonic: D, PSD, PSDH Saft: 410847060, D Sun Battery: D Varta: 05020101052, RSH4D Vinnic: N4000D