Best battery upgrade
I would like to know what is the best battery upgrade. Sometimes i need to use my phone for geocashing for more than two days and it is very boring trying to find time for waiting for charging. So I'm looking for best solution like extended battery or something like that. Size is not important for me, but i want something quality. Can you help me please ?
HTC Touch HD - still at home as backup
HTC Desire - sold
Samsung Galaxy S II - dead
Samsung Galaxy S III - Omega ROM
Samsung Galaxy Tab 2 7.0 wifi version