Another battery question

[Jesser04]

I have 12-15 deep cycle batteries that I want to put on a tender over the winter. A handful of the are agm what do you guys think the best way is? Could I get one tender and tie all the batteries together? Should I get one for each battery? I want to do it as cheap as possible.

 

[jmaxj]

I found one tender per battery works the best. I tried it with one tender and 3 batteries and it didn't work very well.

 

[boogie_4wheel]

I'd get 3-4 tenders, then rotate them every 1-2 weeks.
I use 1 tender for my motorcycle and generator battery, and just swap them every 2 weeks.

 

[mombobuggy]

Old cell phone chargers work great, with some alligator clips in place of the plug,

 

[Jesser04]

I will get a handful and rotate them around.

 

[cruiseroutfit]

Old cell phone chargers work great, with some alligator clips in place of the plug,

Any more details on this? Do cell phones charge at 13-15v?

 

[I Lean]

Any more details on this? Do cell phones charge at 13-15v?

No, most are 5v. Maybe that's why he said "old" chargers--they used to charge that high until they went with the USB standard?

 

[MikeGyver]

If they are all of similar condition and state of charge, you could wire them in series and give each battery 13.5v, limited to around an amp.
Best way is probably to buy a bunch of cheap battery tenders http://www.ebay.com/itm/Car-Truck-M...hash=item566a4a7b04&item=371150453508&vxp=mtr

 

[I Lean]

If they are all of similar condition and state of charge, you could wire them in series and give each battery 13.5v, limited to around an amp.
Best way is probably to buy a bunch of cheap battery tenders http://www.ebay.com/itm/Car-Truck-M...hash=item566a4a7b04&item=371150453508&vxp=mtr

Thanks for that link, I just bought two of them. :greg:

 

[ID Bronco]

I'd get 3-4 tenders, then rotate them every 1-2 weeks.
I use 1 tender for my motorcycle and generator battery, and just swap them every 2 weeks.

This

Harbor Freight has them cheap and on special once in a while too.