Originally Posted by enigmadroid
FWIW another thing to look at with using wall chargers other than the one that came with the device is the voltage. If it's a different voltage than what you have with stock wall charger it could shorten the life of your battery. I know this thread is about MicroUSB but I thought I'd throw that out there.
All USB chargers have the same output voltage of 5 V. The difference between chargers is the supplied current and that's measured in A (amps).