Q: Charger problem?

Hey nate72,

Thanks for the question. You might find the information in the following resource helpful:

iPhone and iPod touch: Charging the battery

http://support.apple.com/kb/HT1476

And in regards to the temperature:

When using the device or charging the battery, it is normal for it to get warm. The exterior of the device functions as a cooling surface that transfers heat from inside the device to the cooler air outside.

 

via iOS devices: Keeping device within acceptable operating temperatures

http://support.apple.com/kb/HT2101

Thanks,

Matt M.