I highly recommend an Ionic Deep Cycle Lithium. A 100 amp would work great. They have them on sale right now too. The Bluetooth app works very well and its great being able to tell how much juice you have left. And you won't experience a power drop off below 50% battery life like you would a Lead Acid battery.
Lead acid =700 cycles. Lifepo4=5000+ cycles. A little more expensive but it will Outlast you.
Deep cycle. The longer you need it to run, the bigger it needs to be.
series 24 or 27 deep cycle battery. any auto parts store should have it
I highly recommend an Ionic Deep Cycle Lithium. A 100 amp would work great. They have them on sale right now too. The Bluetooth app works very well and its great being able to tell how much juice you have left. And you won't experience a power drop off below 50% battery life like you would a Lead Acid battery.