I don't know about 2x faster. hehe, but it's a bit faster. The charger included was 1000ma (1A), but without this driver, the most it ever seemed to pull was 500ma (probably as a USB safety feature) 500ma is more than plenty of juice for most items, but if you notice when on a call, using a BT headset, etc, sometimes the phone will draw MORE power than the charger can handle and your battery can actually go dead on you while on the phone and plugged into the charger. You still have the issue of heat shutting down the charge circuit tho, so you still have to keep an eye on it.
