I received the Mugen Power 1800 mah battery from DealsPlusCell off of Ebay. The fit is perfect, even better than OEM, looks like a better built battery. It says to charge for a full 12 hours prior to use, and only use an OEM charger. Also should be charged and discharged 3-5 times to achieve stated capacity. Which is not hard to do with this phone. I will let everyone know how it works out. Received it in 2-3 days, kinda expensive $40.00,