My PS3 pad could last for years! The only PS3 game I play atm uses a wired arcade stick. 
Seriously though if I was playing something a lot (like I was when playing Killzone 2 6 hours+ a day to get max rank) the controller would last around 4-5 days easy.

Seriously though if I was playing something a lot (like I was when playing Killzone 2 6 hours+ a day to get max rank) the controller would last around 4-5 days easy.