If you have a wall or auto charger that has a standard USB socket in it (there are many -- such such as
http://www.amazon.com/Coby-CA81-Powe...2682049&sr=8-2) then you can use one of the USB to barrel charger cables such as
http://www.dealextreme.com/details.dx/sku.28732. They work fine with the 505. EBay is another good source also I have used Deals extreme many time and they are reliable and affordable -- if a little slow (one to two weeks from HK).