Also take the connections apart and clean with scotch brite and spray with some kind of anti corrosion spray. If you are using wing nuts on the battery terminals, throw them away and replace with stainless hex nuts. Make sure you have tight connections on all of the terminals.
2015 Seaark 1872 MV CC Etec-90
Two Helix 12 CHIRP SI's, , MinnKota Riptide ST80/i-pilot Link, Bob's Hydraulic
2018 Robalo R180 CC, Yamaha 115
Bitter Gun Owner