Originally Posted by dirkdigles
I know batteries degrade with time, however if purchasing a 3rd party battery or used phone, is there any way to determine date of manufacture or age of battery?
I don't believe there is a way to determine that. I would say if battery doesn't hold a charge for at least 8-10 hours, then its probably pretty old. But, it also depends on numerous other factors, like, how many radios turned on, apps running in background like Facebook, and screen timeout.