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Old May 9, 2016 | 03:53 PM
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Battery tender
I have a 2002 F250 with the 7.3. My question is, I have a battery tender that is hooked up (pig tail plug in) on one battery. The fact of how the batteries are hook up to the charging system, does this mean that both batteries are being charged? Thanks in advance. HaroldMac
 
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Old May 9, 2016 | 04:18 PM
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YES,,, but a normal "Battery Tender" is 1.25 amps total...


do you get the "Green" light... from overnight Tendering?


I own 3 BatteryTender's.
 
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Old May 9, 2016 | 04:21 PM
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Yes, it usually is green. I had read where someone said put positive to one battery and the negative to the other, Didnt think that was right.
 
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Old May 9, 2016 | 05:31 PM
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Originally Posted by Haroldmac
Yes, it usually is green. I had read where someone said put positive to one battery and the negative to the other, Didnt think that was right.


that way is for main power... but at 1 amp.. no.


the power way... is if one cable disconnects or become corroded... the charging is NOT charging one battery.. when 2 need charged.


one battery maybe over charged and the second one slowly dies.
 
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Old May 9, 2016 | 06:52 PM
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Ok thanks. I get confused on this, I also have a Deuce and it has 24 volt system. Just wanted to make sure i had this tender hooked up right.
 
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Old May 10, 2016 | 10:19 PM
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I find my tender does a better job when it's connected to the end battery and not the middle one (if that makes sense). It seems that it charges both better when connected like that. If connected to the middle battery, the end battery does not seem to maintain as well.
 
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Old May 11, 2016 | 07:54 AM
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Originally Posted by Haroldmac
Ok thanks. I get confused on this, I also have a Deuce and it has 24 volt system. Just wanted to make sure i had this tender hooked up right.
If you have 2 12v batteries hooked up in series to make a 24v system, each battery needs to be charged separate. In parallel they both charge, but not series.
 
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Old May 11, 2016 | 08:49 AM
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FYI- Costco has the 3amp Tenders, they work a little faster then a 1.25 amp.
 
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Old May 12, 2016 | 12:20 AM
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Originally Posted by Haroldmac
Ok thanks. I get confused on this, I also have a Deuce and it has 24 volt system. Just wanted to make sure i had this tender hooked up right.
I have one as well. I disconnect the batteries when its sitting. Highly recommend these:

Amazon.com: Sunforce 52022 5 Watt Solar Trickle Charger - Pack of 2: Automotive Amazon.com: Sunforce 52022 5 Watt Solar Trickle Charger - Pack of 2: Automotive

Just set them on the hood.
 
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Old May 12, 2016 | 04:41 PM
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Originally Posted by TooHuge
If you have 2 12v batteries hooked up in series to make a 24v system, each battery needs to be charged separate. In parallel they both charge, but not series.
Or you use a 24v charger but this has nothing to do with a pickup
 
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