Trickle Chargers...
 

I use a single battery tender at home and bought a 30' extender for the charging end, each battery I charge has the quick connect on it so it is easy to rotate. I charge 4 batteries at home this way, takes each battery a day or so to come up to charge, do it once a month.

I helped set up a new sporting clays course at the local Boy Scout here camp 2 years ago - we had to figure out how to keep 30 automotive batteries charged for the throwers. We bought 3 of these 10 bank charging stations and they work great.

https://www.amazon.com/Battery-Tende.../dp/B000NCOKVU

I use the Black and Decker ones, they are around $20. Home Depot I found them.
I’m not convinced using them prolongs the life of the battery. Since 1979 I’ve stored a car(s). I got 11 years from a battery that went dead a few times, yet on a trickle, one lasted 3 years recently.

Ive used just about all of them. Batteries got fried by a battery tender and a noco. Now I only use two. This ctek and this Optima. Both are excellent. I have em on 4 cars 24/7
https://smartercharger.com/products/ctek-us-0-8

https://www.optimabatteries.com/prod...rs/digital-400

My Delco battery finally went dead last year after 22 years. It got a 2 amp charge once every 2 months and that was it. Don't make em like they used to.

My electrical engineering friends swear by CTEK so that's what I've got and love it. Pricier but that means better-engineered charging algorithms to preserve the life of the battery, whether lead-acid or AGM (different charge modes).

Ctek

I saw several sizes of CNET chargers. What would work on tractors with 2 batteries?

The guy I work for had about 38-40 cars in his collection, 28 where I live and 10 or so in AZ. We use Ctek chargers , he probably had about 30-40 of them, only had trouble with 1 once and it was the first generation of Ctek.

The cheap chargers can some times not cycle and overcharge the battery’s, IMO.
Personally I have Cteks on my own stuff & the battery in my 2001 Gran Prix GTP lasted 15 yrs. That being said I replaced the battery with a AC Delco replacement battery and it only lasted 4 yrs.

I’m a fan of unplugging the Cteks and letting the battery sit for a few weeks to cycle them, it seems to help, plus I don’t like leaving stuff plugged in when I’m not at home. I think the battery quality has gone downhill lately, they just don’t last as long as they used too.

I have a 2 post Battery Tender I've used for several years. I NEVER leave it on all winter. I have 7 batteries I rotate every 2 months. Once the green light is solid, I leave the charger for another 2 days and then move to another battery. After they have all been charged, they sit for 2 months. These batteries range in age 6-9 years old now.

Another vote for CTEK chargers.

I’ve used Battery Tender on all my cars for years without any problems.
Buddy

I can tell you do not use a Harbor freight bought one. I had one on my 55. I unplugged it one day closed the hood. When I turned the key the battery exploded. It was loud and made a big mess. It left a perfect dent in the hood the shape of the battery cap. I use battery tenders now and no issue. Larry

Just disconnect the battery and let it sit. Charge it in the spring.
I don't even disconnect the battery!

I used to just put a charger on a couple times a year, the batteries lasted alot longer back then. Maybe the batteries are crap now days.
No stabil either, only one year I used that garbage, swelled my acc pump.

I quit using stabil 20 years ago and went to Sea Foam. Never had an issue with any fuel system component since. I ONLY run non-oxy gas in all my carburetor engines, including lawn/yard care. I haven't had a carburetor apart in 20 years...:biggthumpup:

My mechanic just rebuilt the carb before the stabil snafu. He said, why are you using it. He’s rite, after storing the same car with nothing in the gas fir 35 years, why start now. Lol
All my small engines I just run the gas out before stg.
Now in the spring, I’ll run that old gas out before filling up.

I bought a Deltran battery tender from 4wheelonline last year. It has a decent price and keeps my battery in good health.

I use the tenders to charge the batteries 2 or 3 times over the winter. All the restoration style batteries I have bought tells you in the paperwork to not use battery tenders. As far as fuel I rarely use any stabil type additive but I do try to make sure they have aviation fuel in them before I store them. They say it keeps forever unlike pump gas, standard pump gas kills my accelerator pumps not to mention it looses it strength over time.

19 years no staybil, carb is still good.

If you are using a good racing fuel it helps but the damn alcohol in regular pump gas eats the rubber up in my carbs. I will bet that I am not the only one that experienced this since they put all the alcohol in the fuels.

Pure Gas