AC Adapter for Charging Sansa Clip w/o Connecting to Computer

Hello!

OK - A few of us have tossed this one around on another board for a while.  Your thoughts on the following?

I have a wall to USB charger that has INPUT: 100-240V - 0.50 - 60Hz, 0.2A  OUTPUT: DC 5V === 1A  For I.T.E. use only. 

After reading the rest of this thread (and several others which are closely related), my charger seems to differ only in the amperage, with it being 50mA higher than the others.  Does this matter?  Would I damage my player if I use it?  Also, is it OK to leave it plugged in to charge, say, overnight or should one be diligent and unplug it as soon as it is fully charged?

I would really appreciate any insight!  Also, this same adapter came with a car end, which (of course) has no specs on it at all.  Do you think that it would be safe to use?  Oh, and don’t worry, I won’t come to sue any of you if I do fry my player.  Just wondering if you all had any ideas.

Thanks!  Merry Christmas!

Melody