Need idea on what to buy and where. I run 4 batteries on a pergo, mine are not holding charge that well so I want to replace.

What kind of system do you have? How new are your batteries?

Have you tested your charging system and wiring?

JT, it's perko, not pergo, FYI.

ohh, and take your boat up to an auto parts store and haev them load test the batteries, very easy to do and will tell you if yoru battereis or good or not. and it's free.