This PowerSource Mobile 100 from Xantrex weighs about as much as a mobile laptop battery, works with “multiple electronic products at different voltage and power levels”, and costs $129.99. Why would you use this thing? Because when plugged in the AC outlet on this portable charger, laptops get 2 hours more power, Sony PSPs get 12 hours more power, and iPod Nanos get 72 hours more. That’s a lot of frickin’ juice. In fact, one of these should be enough to last your entire camping trip with your creepy uncle Al who likes to hug a little too much. That guy’s weird.