I run my Garmin 1243xsv and black box off a Amped Outdoors 32ah lithium . My birds are on my starting battery also. I run a deep cycle battery from Walmart to start and run pumps, lights,12'' and 10.5'' Humminbirds. Another Amped Outdoors lithium might work just for the birds. I use 3 Walmart deep cycle batteries for starting and 24 volt trolling motor. EverStart Maxx Marine Battery, Group Size 29DC 12 Volt, 845 CCA