I think its a crapshoot also, I have a jetworks going on 2nd or 3rd year maybe more have to check and I have a really old odyssey. for some reason that odyssey is a little weak but it just keeps going and going. its in my backup ski and I dont maintain it at all. it runs 3-4 times a year if im lucky.
I was told by the tech person years ago at odyssey that if I bought "their charger" which is better than the tender because it doesnt get stuck in charge that the battery could last 8 years or more. well I have customers who leave batteries on tenders all winter and in spring they are junk. I have put mine on the special tender and same deal. so now I feel that the only 3 things to keep a battery alive are
1)never let it discharge, always be riding the ski. disconnect it if you have a drain like a sd. but you must ride at least every other week.
2)you have to get a quality battery.
3)keep your ski tuned, cranking and cranking to get it started is probably a big contributor to premature battery death not to mention what it does to all the rest of the wiring.
now I buy agm from lynn vick, also sold by sbt locally. its the cheapest quality battery I can get locally. I wont buy acid anymore.
I also think the jetworks battery is just a better battery. But since I dont maintain mine I only keep the one in my primary ski.
Ive heard quite a few stories over the years about batteries and how to maintain them for longer life but so far have not been able to consistently keep any battery for more than a year or 2. I think the two I run now are a fluke. seems like that is supported in this thread since few have lasted the extended years the makers claim they can go.
does anyone have better experience with the tenders? I know I am lazy and lose batteries because of it, but I have gotten pissed a few times and tried to maintain a battery and usually they go a season or two and no more. I think it must have been something I did or didnt do and over time i just chalk itup to I have been lied to. is it the battery, the tender, me?
anybody able to keep batteries alive???? like multiples? multiple times? for multiple people? I just need to know if I should keep dreaming the next high dollar battery will last or quit and just figure its like trailer lights and motor mounts, replace every other season.