Same here...and mine is VERY SLOW! If I plug it into ANY computer it is slow. Plugging mine into a wall works much faster.
Wall is faster, and cord that came with Bionic is fastest. Some of my old Moto and Amazon cords don't work.
I was having a problem where my battery was draining within probably 4 hours. When plugged into my usb port to charge, apparently it was charging with enough juice to power the phone so it didn't seem like it was even charging. I did a factory reset as much as I hated to, and now it charges nearly as fast as a wall charge.
It is also recommended that you "condition" any battery. Let it go to 0% then using the wall charger charge to 100%. Repeat this at least three times.
One person in this forum said he the does the 0%/100% once each week.
... Thom
While a factory reset may make it *seem* like it is charging faster, it's not.
The USB on computers are regulated to provide only 500 mA of power. the wall chargers provide up to 850 mA. My car charger provides up to 1000 mA.
I think the phone cannot make use of more than 850, but not 100% sure of that - but, at any rate, it makes sense that if your phone is draining the battery quickly, then plugging it into a USB port on your computer may make it not charge at all, in fact, may only slow down the discharge.
Again, for battery issues, one of the things everyone needs to do is watch the BIONIC Battery Life videos stickied at the top of the forum. Seriously. You
really need to watch them -even if you think you might know all of what he says, there's a good chance that one tiny thing in there he says still surprises you.
As Tom also said, you need to condition the battery - particularly if you perform a factory reset after having used it for a while, or if you go out and buy a new / replacement battery.