I purchased a optima blue top 31 and it did great for about 6 months but now it does every time I go out. Switched from lowrance to hummingbird onix. My thought is the onix draws more power than the lowrance...
origonally ths boat had a 27 series interstate on it (still have as a back up) and o hear the 31 blue top is the same as the 27. Should I just exchange and upsize the blue top? Go with a larger interstate?
Or or should I take 1 battery out and just run 3 batteries for it all? Thought please :)