The Samsung BST3078BEC is the spare battery for the Samsung SGH-D500 mobile phone. The Samsung battery has a capacity of 800mAH and are currently only available in black. it also provide your D500 phone with energy to communicate with friends and family for long periods of time and can be easily recharged when needed, This battery is a safe, reliable and long-lasting source of power for hours of fun with your mobile phone. Powers your compatible Samsung mobile phone. Charge up and talk for hours with this long-lasting, rechargeable Samsung mobile phone battery. Rechargeable and long-lasting, you can safely recharge this battery time and time again with minimal reduction in performance or capacity.