Anyone ever placed their batteries in parallel when charging?
 

I just took the batteries out of my Cubs and want to keep them in the best condition for the winter. I have 11 and was wondering if a battery tender will work with them hooked together in parallel. I have a couple of big batteries out of my boat that I think will have to be done separately because of their size.

I have never tried this and wonder if someone here had.

Thanks

John

I was wondering the same thing John. I remove my batteries and move my chargers around. It would be nice to jump them in parallel and keep them all charged.

I don't see any reason why that wouldn't work. But the amp output of the charger would be split between all the batteries. You might have to run the charger on high, or get a bigger one. :bigthink:

I've done it many times. I have used jumper cables to connect the batteries and used my little battery tender. It takes a little longer to come up to full charge but has not damaged anything. In a pinch at work, I've even used a battery jump box to charge a battery. I hooked the battery box cables to the battery and plugged in the battery box charger. The next morning it was fully charged.

Bill

Sorry to jump your post, but on the subject. I have trouble with my battery loosing its power during the winter I use it to blade and sand my drive. The battery is new and like 350 CCA, do the Battery Tenders work and would this fix my problem of having to jump it every time?:bigthink:

Does it have a parasitic draw on it?

Sounds like you have an electrical issue of sorts. Sounds like something in the electrical circuit is bleeding off to ground or perhaps maybe your S/G needs some work. Just my 2cents.

The tenders work well. Mine is always plugged into it.

As an added benefit to keeping your battery fully charged, it also keeps the battery warmer than ambient, since there is intermittent electrical activity (natural/parasitic draws and the recharging) On brand new equipment with a new battery, it always starts easier when left on a trickle charger than if left off even over night (no there are no parasitic draws.)
Without a doubt, if you don't have one, get one. The cheap ones are fine for maintaining charge, and when you can pick one up easily for under $10 it is almost ridiculous not to use one over the winter.

Great Thank you.