Had a Die Hard in my folks cellar for over 6 years. Pulled it out, slapped it on a charger for a day. Put it in my 'Cuda and drove it around for a week of my vacation. Next year, the same. But my dad kept it topped off for me.It was a mid 80's battery in early 1990.
Flooded acid batteries like a float voltage of around 13.5-13.8 voltage.
AGM needs a float of 14.2 volts. So if you slap an AGM in where a flooded was. It never gets a full charge.
"Why do they die so fast?" Question answered. There are folks who sell voltage regulators for alternators that are designed to boost float voltage for AGM batteries.
The other way around? Flooded will gas-off a little at 14.2 volts. But seems to tolerate it pretty good.
Lithium car/bike/atv batteries. After 3 batteries in my Harley. The OEM flooded and two AGM's (before the 14.2 volt float requirement to let them live was learned). I bought a lithium for it. 4 year, no gripe warranty after having it tested by an approved store.
The thing started like Thor himself sent a bolt from the sky. Except......try to start it around freezing? Nope. Needed a heating pad.
And I usually like to park it around events in the evening with the parking light on. Looks cool like that.
We could traipse around for a few hours no worries. Hop on, fire it up, and go putt around.
Lithium? A Dakota Lithium at least. The BMS shuts it right down if it discharges below <something>.
Come back. Parking lights off. Won't start. And you know the rest. But it lasted 6 years. A lot better than 'new every two'. And the fact that powersports batteries are warranted for six, maybe nine months. Ludicrous.
I called Noco. Asked all of the right questions. Great warranty. Save some bucks ordering directly, faster service that the wally world alternative.
They addressed (or claimed over the phone) that the shut down was addressed. Sure. The BMS keeps it form being damaged. But if it is shut down because it does become low. Shut down any load (key on, parking or headlights left on) for 10-15 minutes and you get a second try to start your rig. Not a bad thing if it really works. Right?!
Exide, Interstate? Be very afraid. They ain't what they used to be. In Florida my '70 Cutlass had an Interstate (early 90') that lasted 6 years until it dropped its plates at an intersection and boiled over. In Florida, mind you. The last Interstate.....done in 2. Guys down there would suck out the acid and put water in shortly before the warranty ran out. Make it to the auto parts, get them tested. And get a new one pro rated. No more pro rating.
You can't beat an Odyssey. Napa, AC Deco (the better ones). Yup.
The mom and pop Car Quest only sells Die Hard. For a reason, the old man says. So they convinced that a Die HArd Platinum was the hot ticket for me. l will see. Stand by!
You can't cut Mr. Project Farm down. He does great tests of all sorts of things. Not sponsored and pressured to slap a little sugar on his comparisons and reviews. Compared to the Brits and Aussies with their constant overzealous and same sounding (Dave from EEVblog) rant. I like P-Farm a lot. Of course I like AvE (Boltr) too.
Reminds me to beware when wearing shorts around the garage vice.
Opinions may vary.
