I upgraded from a cheap Pantech 115 to a slightly less cheap Pantech 215. I am pretty sure I charged the new phone with the old charger. Result - battery discharges in a few hours. Even a big fat extended life battery only lasts 10 or 12 hours. Cellie gets warm, which is a clue to where the battery charge goes - behaves more like a heater than a mobile phone. Still works, but this is not a practical outcome. Can anyone say (without telling me I should have read the manual, and without me wondering why a manufacturer would create such an obvious trap for their loyal, slightly brainless, upgrading customers), is this fixable cheaper than getting a new phone?