Motorola A840

I was wondering if anyone else is having charging problems with the A840. I'm on my second A840 because of them. My first A840 got real hot and froze up while charging. Now this second one the first standard battery charged fine but when i went to charge the extended battery the phone got real hot and the phone said charge complete and was at 3 bars than i turn around and its at 2 bars charging. And than i unplugged the charging connector from the charging port and it froze up at unable to charge and now when i start up my phone it says reset date and time even though the date and time is correct! If anyone else has ran into these problems or know of anyone else who has let me know! Thanks!