What is the correct battery size and type for a 2000 Mercury Promax 225, two hummingbird helix graphs, and live well pumps?
s/n: OT105232
model: 225 L TM
It's so confusing compared to automotive batteries. There seems to be different opinions between wet cell, deep cell, agm, etc. I just want to get the correct battery. The boat is currently running wet cell but it had no electronics when I bought it. I have added electronics so batteries may need to be upgraded.