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Where to connect battery tender

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Old 04-06-2024, 07:44 PM
  #61  
gsk326
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I opened the driver side door with the tender connected; the axillary lights went on in the car and the clicking on the tender stopped. I shut the door, disconnected the tender, reconnected and the tender cycled to green within several minutes without any further unusual clicking. I am confused, but for now, it is working again. I am driving the Porsche to dinner tonight, I will see what happens when I get home and reconnect the tender. I have tenders on three other vehicles and this has never happened before.



Old 04-07-2024, 05:53 AM
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redeye992
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Originally Posted by Staffie Guy
Missing one important step-lock car. If you don't, the charger will go off in 30 minutes-that is what happened when I did not lock the car as the last step. Don't just turn ignition on and off must wait at least 1 minute.

Plug into footwell
turn on ignition and wait 1 minute or so then
plug charger into wall socket and make sure green lite in on
turn off accessories
Lock the car!!!!

This is what I do for my CTEK charger.
I never locked mine when I plugged it into the socket. It's been two days and the charger is still very much on. Now I am confused. Mine is a MY24
Old 04-07-2024, 11:13 AM
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Daytona67
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Originally Posted by redeye992
I never locked mine when I plugged it into the socket. It's been two days and the charger is still very much on. Now I am confused. Mine is a MY24
I just got my CTEK with the 12V adapter for the footwell...will try it this week. Did you do as others and run the cord through the bottom of the door?
Old 04-07-2024, 12:25 PM
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Originally Posted by redeye992
I never locked mine when I plugged it into the socket. It's been two days and the charger is still very much on. Now I am confused. Mine is a MY24
I know this is a known problem when using the socket in the footwell for the tender. I am not using the socket and am connecting directly to the battery; it was working fine for over 3 months. The more I have thought about it, it must have been related to some accessory that was causing the relay "glitch", but why all of a sudden after so many months?

By the way, I had no problem reconnecting the tender after taking the car out to dinner last night; worked fine and this morning green light on! Hopefully this was just a one time "glitch".
Old 04-07-2024, 05:21 PM
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Charcharius
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Interesting thread. FWIW, I've used the 12v outlet method on a 2014 991.1 (centre console), 2020 992.1 (footwell), and a 2022 992.1 (footwell) without issue.
Old 04-07-2024, 06:07 PM
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redeye992
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Originally Posted by Daytona67
I just got my CTEK with the 12V adapter for the footwell...will try it this week. Did you do as others and run the cord through the bottom of the door?
No. When I plug my car it's for extended period of time so I cover it. I ran the cord through the passenger window and then covered the car

Honestly I wanted to keep it simple!
Old 07-06-2024, 04:59 PM
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Hello, So I know this topic has been debated extensively in this thread and several others. I may have missed it, but what's the downside to attaching negative eyelet to the battery and/or what's the downside to attaching it in to a ground? Haven't had a chance to open up my frunk yet, but for those with a trickle charger on a 2024 who used the ground method, would y'all mind posting a pic of which nut/bolt you used?
Old 07-06-2024, 05:32 PM
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nyca
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I believe the owners manual says attach at the battery but I didn't see enough thread there to attach a secondary nut on top, which means you have to loosen (not remove) the factory nut and use a spade style eyelet under it. To me it looked cleaner to attach to the ground on the firewall. The firewall nut is an M8x1.25 from what I saw, the battery is an M6x1.0
Old 07-06-2024, 06:46 PM
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981KMAN
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Originally Posted by nyca
I believe the owners manual says attach at the battery but I didn't see enough thread there to attach a secondary nut on top, which means you have to loosen (not remove) the factory nut and use a spade style eyelet under it. To me it looked cleaner to attach to the ground on the firewall. The firewall nut is an M8x1.25 from what I saw, the battery is an M6x1.0
Just use a M10 stainless nut on top of the Negative Terminal stud. I had to tighten mine 1/2 turn so I could get 3 full threads, yet it works fine. No need to cut the eyelet.

See pic in post #51. I did the same on my 991.2 and 992.1.


Last edited by 981KMAN; 07-06-2024 at 06:49 PM.
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Old 07-06-2024, 09:56 PM
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nyca
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An M10x1.0? Is it different than the positive post, I could swear the positive post was an M6x1.0
Old 07-06-2024, 10:18 PM
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I've posted this on a few different threads, but I use a Magcode power port. It has a spring cover and is only 'hot' when the magnetic plug is connected. The nice thing is that if you ever forget to unplug it, the magnet just pulls off and no damage.





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Old 07-06-2024, 10:41 PM
  #72  
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Originally Posted by nyca
An M10x1.0? Is it different than the positive post, I could swear the positive post was an M6x1.0
Not sure... It takes a Metric 10mm socket, so I probably miss stated the thread diameter, and you are correct.
Old 07-06-2024, 10:53 PM
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Yes, an M6 takes a 10mm socket. The M8 is a 13mm. I will try again, I didn't see enough exposed threads on the ground post to catch it.
Old 07-06-2024, 11:19 PM
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Originally Posted by nyca
Yes, an M6 takes a 10mm socket. The M8 is a 13mm. I will try again, I didn't see enough exposed threads on the ground post to catch it.
I had to tighten the nut on the ground post a little to expose another thread. Didn't need much, as it's not a structural item, just has to be firm to hold the eyelet in good contact.

I can take a picture of mine tomorrow if you need.

Old 07-11-2024, 09:48 PM
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Originally Posted by Charcharius
Interesting thread. FWIW, I've used the 12v outlet method on a 2014 991.1 (centre console), 2020 992.1 (footwell), and a 2022 992.1 (footwell) without issue.
Are you doing anything when you plug in the trickle charger into the socket? When I plug it in with the car off, the charger doesn’t turn on. When I cycle on the acc position the charger starts to work but when I went back and checked again later, my charger was off again.

Anyone have any tips? This is on a 2024 Turbo S Cab.



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