I'm ok with my 2100 MaH battery lifed phone as it lasts me the whole day, which is OK by me as I usually get to a charging source by time it's about to deplete.

Was thinking of getting one of those portabler chargers, but realise it wouldn't make much sense to have an extra load walking around with and not using it that much.

Frankly you don't have to worry about battery life that much with the newer OS these mobiles get nowadays and not to mention bigger batteries above 2500 MaH.