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ise27 11-09-2013 11:29 AM

Charging more than one ATV battery at the same time.
I have several ATV's which I use mostly during summer/autumn. I store the atv's during the winter. Every spring I go through the "buy new batteries" ritual. I keep one of my machines in the garage and use it to plow snow during the winter. I keep the "plow ATV" plugged in and use a battery tender to keep its battery charged. I have had great success keeping this battery. I would like to remove the batteries from my other machines and keep them charged as well but I don't want to have to buy a battery tender for each. Can I "daisy chain" these batteries together (4 of them) and use one battery tender to keep them all charged during the winter?

wkearney99 11-09-2013 02:26 PM

A tender is likely cheaper than new batteries every time. Just get more tenders. Otherwise get a charger designed to handle maintaining multiple 'banks' of batteries. These are likely more expensive than individual units would be.

Oso954 11-09-2013 02:27 PM

Battery tenders come in all sizes. So, maybe yes, maybe no.

A model number of the tender would have helped.

cjm94 11-09-2013 05:00 PM

Or just rotate the tender to each battery every couple weeks

joecaption 11-09-2013 05:03 PM

wkearney99 11-09-2013 05:45 PM


Originally Posted by joecaption (Post 1264551)

Yeah, but a charger with some brains, that can control each battery individually, is often a better choice. Using an isolator is definitely better than NOT using one, but not really 'enough'.

ukrkoz 11-09-2013 06:28 PM

I can only tell that I have 2 deep cycle batteries connected to single solar panel charger and they been sitting there fine for 2 years by now. GAte opener. So it's fine to connect several.

Hardway 12-01-2013 06:40 AM

I can tell you the batteries are only going to last as long as they last, no matter what you do. I have two ATVs, I have left the batteries in them over the winter in the cold. I have taken them out and kept them in the basement. I have left a battery tender on them. So far the best result has been, to once a month charge them. I only have one charger, so charge them one at a time. I seem to get two years out of the batteries. I use the calander on my phone or desk top to remind me.

ratherbefishing 12-10-2013 06:40 PM

You can try connecting all lthe batteries in parallel. It will sorta work. The problem is that, if you are using a "smart" charger, once the first battery is fully charged, the charger will go into maintenance mode and slow way down. A dumb charger will keep going and charge them all. It will also overcharge them all. Better to use a multi-bay charger. I have a Genius G4 at work that seems to work pretty well. It ain't cheap, but it's probably less than 4 batteries and less than a similar Battery Tender. The cords are long enough that you could leave a couple of the batteries in the bikes.

MT Stringer 12-10-2013 06:50 PM

I had a dual battery charger on my boat. I bought one that would charge three batteries but never got around to installing it. Finally sold the boat and then the charger.

So, a three bank charger that puts out about 5 amps each and charges batteries individually. Is that what you are looking for? Seems to me you could mount it and run the leads as necessary.

ratherbefishing 12-11-2013 03:06 PM

You don't even need 5 Amps each for little ATV batteries. 1-2 Amps is plenty.

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