Originally Posted by lotus49
I've said it before and I dare say I shall say it again but why not just buy a spare battery?
Doing so has numerous advantages such as it's cheap (£5 on eBay), doubles your battery life, doesn't stop you using cases, docks etc and, best of all, does not turn your phone into a hideous fat munter.
The only drawback I can see is having to swap them over but, unless you require say 24 hours of literally continuous use without even a one minute break, I cannot see that this is much of a drawback considering the advantages above.
For me, the reason is because it's a pain to change the battery and it's a pain to keep the extra batter charged. After having owned the Razr Maxx HD, you really learn to appreciate high capacity batteries. My stock battery gets me through the day, but it doesn't let me do the unexpected (go online to research something for an hour straight - in addition to the normal workload)
Also, like owners of all electric cars, I get "range anxiety" I don't like seeing that yellow battery icon!