Username or EmailPassword
You could always buy one of those Mains to USB chargers, or car cigarette lighter to USB charger if you want to take this on holiday and not your laptop.
There quite cheap as well.
Unfortunately this is not always an option. USB-to-cigarette-lighter does not always use the right kind of Volts, there are many generic such adapters that will kill your device, simply because your device expects different power strength. Unless you buy one from Archos, you can't be sure that it will work correctly.