I used the Regular Walmart marine deep cycle 27 series batteries for years.
Replace about every 4yrs. boat stored in a hot garage.
2 batt for 24VDC
Not I have an EPOC 100AH, 24VDC Lithium batt with bluetooth.
I paid $1000 with charger and love it. The warranty is 11yrs.
Get good batteries as the trolling motor can bring you back to the launch if you break down.
This year I broke down on Conroe and trolled / fished my way back to the lauch
3 miles away. I could have went 8 miles etc.
If you get the Terrova, make sure you store properly before you run from spot to spot.
It can come unlocked - depoy and break off the bow. The colar needs to be down at the motor to run.