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Ford 9N, 2N & 8N Discussion Forum
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OT Battery Tenders

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drlarrye

03-26-2020 06:13:50




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I have several small 12V batteries that I store in a heated work room for the winter. Can several batteries be hooked together to be "tended" by 1 unit?




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Tim PloughNman Daley

03-28-2020 04:22:04




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 Re: OT Battery Tenders in reply to drlarrye, 03-26-2020 06:13:50  
"Battery Tender" is the trade name by DELTRAN but one of the best on the market. The correct term for this type is a battery Float Charger. A battery 'Trickle Charger' is NOT the same thing. Read the box before you buy. A standard battery 'maintainer' or charger is usually a trickle charger type meaning it could not shut off automatically and overcharging the unit causing damage. I also recommend using one unit per battery. I've been using the DELTRAN BATTERY TENDERs on my N's for over 5 years now and have been one of the best investments made. For $30 you can't go wrong. The "JR" model is the 6V unit.


BATTERY TENDER JR (6V) BY DELTRAN:


Tim Daley(MI)

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DrLarryE

03-27-2020 03:51:45




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 Re: OT Battery Tenders in reply to drlarrye, 03-26-2020 06:13:50  
Quoting Removed, click Modern View to see

I knew to hook them up parallel if I did it but did not consider different size batteries as long as they were 12V and reasonably well charged to begin with. Thanks for all the info.



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Jim L WA

03-26-2020 10:04:54




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 Re: OT Battery Tenders in reply to drlarrye, 03-26-2020 06:13:50  
Ditto what HFJ said, but the batteries need to be the same size. You shouldn't have, say a lawn tractor battery and car or tractor battery wired in parallel to the same maintainer.



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HFJ

03-26-2020 07:40:28




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 Re: OT Battery Tenders in reply to drlarrye, 03-26-2020 06:13:50  
i use a battery minder brand - i believe it's exclusively from northern tool. it will handle multiple batteries in parallel.



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TimPa

03-26-2020 07:10:41




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 Re: OT Battery Tenders in reply to drlarrye, 03-26-2020 06:13:50  
if your tender puts out somewhere in the 13-16 vdc range, then there is no reason it can't tend more than one battery. it will do so in less than effective manner. that is the battery should not be dead or near dead.

and you want to connect the 2 batteries in parallel. positive lead from the tender to the positive battery terminals, and negative to negatives.

if connected in series will half the voltage going to the batteries and not provide any charge.

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Bruce (VA)

03-26-2020 07:06:07




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 Re: OT Battery Tenders in reply to drlarrye, 03-26-2020 06:13:50  
At this price, I'd buy individual chargers


https://www.batterytender.com/5-Bank-Charger-12V-2A



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hfj

03-26-2020 07:42:26




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 Re: OT Battery Tenders in reply to Bruce (VA), 03-26-2020 07:06:07  
haha. ya, i'll be ordering 3 or 4 this afternoon ;)



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Bruce (VA)

03-26-2020 12:12:33




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 Re: OT Battery Tenders in reply to hfj, 03-26-2020 07:42:26  
Yea, that must be some super technology to cost that much. I just hard wired all my tractors, model A's and the golf cart. Got 9 total. Worry fine. Oldest battery is almost 10 years old.



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Dean

03-26-2020 06:59:13




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 Re: OT Battery Tenders in reply to drlarrye, 03-26-2020 06:13:50  
Not advised unless you well know the design of your batteries and tender.

Dean



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JMOR

03-26-2020 06:46:54




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 Re: OT Battery Tenders in reply to drlarrye, 03-26-2020 06:13:50  
Quoting Removed, click Modern View to see"... in series,pos. to pos.-neg. to neg." Series? Really? :roll:



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Bruce (VA)

03-26-2020 06:42:27




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 Re: OT Battery Tenders in reply to drlarrye, 03-26-2020 06:13:50  
Battery Tender Inc sells a unit to do that. I'll see if I can find the link.



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Mike Groom

03-26-2020 06:39:58




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 Re: OT Battery Tenders in reply to drlarrye, 03-26-2020 06:13:50  
Yes you can hook them up in series,pos. to pos.-neg. to neg.one winter I had 3 batteries on one tender,just had to make up a set of small charging connectors.



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JK-NY

03-26-2020 15:14:28




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 Re: OT Battery Tenders in reply to Mike Groom, 03-26-2020 06:39:58  
No offense but “you’ve got your wires crossed “ literally. You described hooking up batteries in Parallel , which would be correct for what is intended by the original poster, but called it series, which is positive to negative and doubles voltage, where parallel doubles amps , with same voltage.



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