I voted for the first option, though for a funny reason. I am too lazy to charge the phone.
My 5310's battery is'nt working as expected and it usually dies down within half a day. I still use that battery along with a spare (new)battery which I usually keep in my wallet and use it when the first one dies :lol:
In the end my phone works easily for 5 days without a charge. I charge it every weekend
PS : I know its stupid, but again i am lazy