FlamsteadHill

Emphasis added.

Phil G.

magicfan

What brand and model should I look for to connect to the cigarette lighter? I have a Cayenne. Is it only available at the dealership?

slipaway37

My local dealer wanted $220 for the exact same CTEK I purchased on Amazon for maybe $75 WITH the extension cable. Must be the 'Porsche' Logo.

Ale_72

I’d never buy the older ctek version with the Porsche logo paying it twice.

Virtualg

Adding on to a long thread here, but as an FYI.

I have a 2014 981 BS.

The passenger foot well 12V Socket does NOT stay active on my vehicle.

I connected a maintainer to the battery + and - post in the frunk. Did not go right to the battery -.terminal.

MattUF

I have a Battery Tender Jr that I hook my Spyder up to when I know I won't be driving it for multiple days at a time, added the pigtail to the battery terminals so it's as easy as popping the frunk and hooking up the connectors.

Davesrave

Are you sure? I have the same vehicle and plugging into the foot well socket works fine. You have to turn the key on first, then plug in the charger (there's a timeout that is a couple of minutes). Do you use a smart charger?

AbrahamF

I have a Cayenne 2006 and got a battery tender junior and first tried the points under the hood and it did not work.The tender junior had a flashing red light. I asked the dealership and they told me that only the cigarette lighter connection works. Then I bought a cigarette lighter connector and when I connected it the red light in the connector lights up but the battery tender junior has a solid red light. I let it be for about 5 minutes or so and nothing changed. I kept the passenger side windows down and after a while the hazard warnings light flashing. I even looked the door and it happened again.
Any help or advice would be appreciated. Is the Tender Junior too small?

MattUF

The battery tender jr shows a solid red light when charging. Once it's done charging your battery it will turn to a solid green light.

AbrahamF

Thank you very much Matt. I am going to try again tomorrow morning as somehow the hazard lights were flashing too at one stage. I had the window open to get the cable out and then locked the door. So I do not want to try again in the night just in case.
By the way I have the same model tender junior connected to my motorcycle and it has a flashing green for some time and then goes solid green.

brandobot

I have a Noco G7200 (supportsAGM and lithium ion). I have it hardwired to my battery and routed the adapter through the plastic cover in the frunk. Makes it super easy to disconnect and re-connect.

AbrahamF

I just got a Genius 1100 with the cigarette lighter adapter and now hoping that it will work. When I connected and put the setting to cold and AGM the 25% red flashed and immediately went solid red and the 50% red kept flashing even after 15 minutes. I am hoping that this time it will work.

Kitc2246

Just ordered my second tender, a Stanley BC209 from Walmart because it includes a cigarette lighter adapter. Also available from Amazon, but it appears to have been coded as a battery requiring special shipping. A tender is worth the peace of mind not to do a "frunk jump".


2013 Boxster S (just bought)
2009 Boxster (soon for sale)

AbrahamF

Update. The Genuis 1100 seems to work as all the lights were according to the manual with a flashing green and all other lights were out. But when I started the engine, it shuddered to start and sounded like some cylinders were struggling. The check engine light kept flashing until I revved it up a few times and it went off and then the engine sounded normal.
So it may not be a battery issue I feel. I really do not know why this is happening.