Product: Battery: Charging
Photovoltaic suntan lotion   (+3)  [vote for, against]
you need to know what photovoltaics are

You're the ground. Apply and allow to dry before attaching positive electrode pad. Now enjoy the sunlight while the lotion generates current. A good ground connection would be piercing, connected to the 5v regulator. The output would be more than enough to charge a phone or similar.
-- evilpenguin, Jun 13 2012

So, the evil baddies can stake out their victims in the sun and recharge their portable devices at the same time...

Probably not a big UK market...
-- not_morrison_rm, Jun 13 2012

I cna just see some idiot get a sun burn trying to charge his cellphone. I like it. [+]
-- dev45, Jun 14 2012

random, halfbakery