USB-Rechargeable AA Batteries

By Alice Hill
RealTechNews

The biggest problem with rechargeable batteries is that it means (groan) yet another charger in your life. Here’s a smart innovation - a USB-based rechargeable AA battery. Simply pop the top and plug into a nearby USB slot.

Downside: a 5 hour charge time and US$24.70 for a pair.
Source: Firebox.com