Donny,
Not a problem. I have a FIRST GENERATION Ipad and it still gives me 8-9 hours of CONSTANT usage. I make sure it is fully charged each day for my gigs but have often forgot to do that and have played a 2 hour gig with it only 50% charged. Still had 30% left after the gig. Yes, they do come with a portable charger which you can keep plugged in during your gig if you want.

Deane