WOW>... same problem.
I went to lancaster today, w/ a 90% charge on my phone.
(says Battery Left)
I ran GPS to get there, and bluetooth, just in case someone called.
I had it plugged into a Verizon Car Charger the entire time.
I got to Lancaster, and it seemed like it was done charging. It said 100% (i think).
HOWEVER, when i unplugged it, it DROPPED down to 65%.
On the way back, I did everything the same, EXCEPT w/ no bluetooth.
I started off w/ like, 90ish%, said it was full when I arrived home, and when I unplugged, it said like, 92%.
That's okay by me. If I'm running gps and plugged into the car, i'd at LEAST like to even out my charge, ideally, I would gain battery power, even if it's slowly. I am using the phone a lot.
But losing charge? Even when plugged in? I don't think that's good.
Is it all froyo?
Could this be the problem here? limitation in DC power? Limitation in USB charging? limitations in the charger?
Would I experience the same thing if i plugged in my Wall charger, the AC charger, into a DC to AC converter and put that into the car?