The Devotec Fuel Micro Charger is the smallest emergency phone charger in the world (1.3 by 0.9 by half an inch), the 220 milliAmp hour battery will give you 20 to 30 minutes extra talk time, or up to a few hours more standby.
Easy to charge up (lasts up to 3 months) then just pop it in your pocket, on your key chain or in your car and forget about it. Made from die-cast aluminium which is incredibly strong but still light weight.
