I have this same issue with my LGS. If I leave the screen on while charging at home and do not use the phone for anything, it will charge so slow you barely notice...if I turn the screen off, it will charge 10% in a few short minutes. I can do everything on my phone in the car however. I did have to buy the "Vehicle Charger with USB Port" to do this. It is listed at 29.99 in the Verizon stores and is well worth the price, but you can find the same one online for 10-15 dollars US. I am hoping that ICS will solve a lot of the charging issues with this phone, whenever the LGS gets it.