Question, do you test your batteries with a conductance tester before replacing? The price of replacing One or two batteries would probably buy one of these had for over 10 yrs now. Can't remember if this older model is capable of testing agms and gel types.10 years is way past useful life, I change mine out at 5 max. To me, starting batteries are a consumable item and I need my tractors to start with no issues, winter or summer. measure the battery tray, length, width and available height clearance and get the largest battery with the most CCA that will fit with the correct terminal post locations.