Not much I expect from a battery except that it takes a charge and keeps my phone going. It does both and it is doing it on the cheap. I had no desire to upgrade my 6-yr-old Motorola phone - except that the battery wore out again. Verizon told me it would be $50 for a new battery *if* they could get one. Found this here at a great price and now I've got another couple of years on the phone I already know and love.