Occasionally when (or shortly after) I plug my phone in, it pops an error message "Unable to charge non supported battery - see user manual" and stops charging. This is the STOCK Samsung battery that came with the phone and the stock charger. It doesn't happen all the time, but when it gets in a mood I have to #&%$ with it to get it to charge and it's mildly irritating. I just don't want it to lead to bigger problems later. Anyone else?