Today at supermarket they were giving away some crank chargers for cellphones, by promotion buying some coffee packages. So, we've got one of these, it's a little portable plastic thing with a crank, a cable and various cellphone adapters. So nice: I can plug it into the 770 and start charging... :) My question is: are these gadgets reliable enough to charge my Nokia 770 (or Nokia cellphones)? Will I brick the 770 battery if I use this thing enough? -- Antonio