IF it was for the long term would you shave daily though? If it's not super cold out I could get by with 4-5 days. Longer yes but so it's still within that stubble stage so your not trying to mow the lawn with it. A good thought though, how many single guys have only a Norelco, Braun etc, and not even a single cheap disposable. Power outage and you didn't recently charge that bad boy you're gunna be out of luck.