[Squawk 8888]

You can get pocket-sized batteries with a USB port that will charge any device for under $20 and some of them can be recharged with sunlight. Mine holds 2.5x the charge of my phone battery:

http://www.ebay.ca/itm/12000mAh-External-Battery-Portable-Power-Supply-Charger-for-HTC-Mobile-Phone-MP3-/121093835926?pt=US_Cell_Phone_PDA_Chargers&var=&hash=item1c31c14c96

[jeffc]

Well, I guess I won’t be applying for that patent or SBA loan for a spare battery startup company.......