there was not an issue with the i300s.. but they have been out for a long time that most of the ones that are out there are probably not worth much. if you keep a battery charged on the phone and shut the phone down before you replace the battery you MAY be ok.. this is not foolproof but it will help.

an i330 is a better phone all around and the capacitor in it will eventually go bad also.. they do not last forever.

having said all of that, if you can find a i330 i would definately get an i330...