Battery Tender

[Cthehentz]

If I hookup the battery tender to the main battery will that charge the aux battery? This is for my early 2018 JL, I think some changes have been made throughout the years. Any pictures you have would help with routing for clean installs.

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[Reinen]

Yes, it will. Main and Aux are always linked except during engine starts.

 

[DanFelix]

Yes. Search the forum on Battery for excellent advice and info about your question.

 

[Cthehentz]

Thanks, there are like ten billion X infinity worth of articles on here so I chose the simpleton approach and asked. Almost need a locked write up for these basics without ten trillion replies lol...

 

[LarryB]

It does help, but only if your Jeep tends to sit for a long period of time and/or make a lot of short trips with your AC/heat blasting. If I notice that the ESS does not come on (as it needs charging), that is usually a good time to use a tender.

 

[jack bauer]

If I hookup the battery tender to the main battery will that charge the aux battery? This is for my early 2018 JL, I think some changes have been made throughout the years. Any pictures you have would help with routing for clean installs.

I use the NOCO10 as my Jeep is not a DD. Put it on the AGM setting and let it do it's thing. Works great and simple to use.

 

[rhocking]

When hooking up the battery tender (I also use a NOCO10). There was a lot of discussion about where to hookup the Negative. I apologize to the originator of this photo for not remembering and being able to provide proper credit.
When using a battery tender/maintainer the tender/maintainers red clamp goes to Main Battery Pos. terminal and the tender/maintainers black clamp goes to either #5 or #6 in the picture below. #6 is a a larger diameter threaded stud so I go with #6.
The reason for this was that if you hookup to #7 it could cause problems for the IBS system.

 

[DanFelix]

I hookup the neg at the grounding bolt on the engine housing. Which, I think, is the same as hooking up to #5 or #6, which ever goes to the frame.

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