I keep my 1v on all the time whilest out making pictures all day long. I added the battery grip to my 1v and it takes 8 AA recharables, so I recharge them a few times a month and I never get caught with a dead pack....I shoot around 20 rolls a month. I would suggest all 1v users get the AA grip because one day the normal battery may no longer be available...but me, I'm ready for that eventuality ;-)