What size lithium battery for garmin 1222 + lvs34?

Look at the MillerTech Lithium Batteries. I run the Beast. It’s 12 volt. 190 amp hours and 1550 cca. It powers everything on my rig that’s 12 volts . Lowest % I’ve left the water with is after 2 days of fishing in the rain, I came off the water with 78% battery