If you use lots of AA batteries two at time, this is a great entree into rechargeable batteries.  The compact charger comes with two rechargeable AA batteries, and is ideal for travel, with a folding outlet plug, built-in night light, USB charging outlet to simultaneously charge another device like a phone or iPod, and a 12V vehicle adapter so you can charge in the car as well.   Buy it on sale today for $17.99 at RadioShack.com; choose their ship-to-store option to save on shipping charges (orders of $75 or more ship for free).  If you use AAs 4 at a time, check out the 4-battery Targus TG-CH4500 Rapid Travel Charger for $16.13 at Amazon.com. For a heavy-use home charger, check out my previous post on the Best Battery Charger.