I will need a new house bank before the end of the season. I am hoping to make the season on what I have. They are five years old. They will be tested regularly.

I plan to replace with 4 6volt GC2 Batteries.
I have priced the Trojan T105 at about $150 each. I also priced several other popular brands. I have found Advance Auto's Auto Craft brand has specs very close to the Trojan, which includes lead/acid, heavy plates with gel added to enhance deep cycle performance. Amp hours are very close. The only difference is the warranty. Trojan is at 2 years, 2nd year prorated, and AutoCraft is 1 year. With Advance Auto's discount (25% up to $100) their batteries are $100 each.

Advance Auto's brand is built by Johnson Controls. A premier automotive supplier of electromechanical devices. I have deal with them in my career and the are driven by design and process excellence. Today there are many automotive companies that wish they had JC air bag deployment rather than Takata.

So any input from the members would be appreciated. I don't want to throw money away, but would like to justify the extra spent. Thanks