I don't think it does. I don't think the secondary battery is used for cold start, just ECO starts. Keep in mind, the car can be started without the secondary battery installed.

 

I think the ECO battery is Lithium-ion, so I don't think it damages it to let it discharge completely, unlike lead-acid.

 

OK, so reviving this thread a bit cause I just installed my battery tender similar to the way Oz installed his. If I had to do it over again, I may just go with the temporary solution and attach/detach the cables as needed. Here are some of the speed-bumps that I encountered:

1. Broke my drill bit when I punched through the charging post
2. Couldn't find the perfect length screw, so had to hack saw one or two until I found what I liked
3. The red cap that fits over the charging post is so cut to fit that its almost a "why bother having it" at this point. My connector has a very bulky piece of plastic covering the connection between the ring and the tender wire so I had to snip that down some, but still bulky.
4. Due to the length of my screw, I had to cut the tether to the red charging post cap because that happens to be where the screw was hitting (I was not cutting the screw again)

I think if I had the perfect length screw and my tender wasn't so bulky at the end of the positive wire and I didn't break my drill bit I would have a slightly different outlook.

On a side note, should the stock batteries be charging at 6v or 12v cycle?

 

12 Volts. The charger actually needs to deliver between 13.6 and 14.1 volts. As far as your other issues. Just connecting to one of the chassis grounds and the positive terminal block would only have taken 3-5 minutes.

 

I second Unhingd. I have been putting a Jag on a battery manager for a dozen years. I use the standard one that Weather Tech, Jag and a lot of other people sell made by CTEK SWEDEN AB. I use the two posts under the bonnet and gently close it. No drama and very easy. The reason I use the posts is that I am guessing the charge will get to the second battery. But I am just guessing about that. Note that the program selected affects the voltage range. It took me a while to figure that out.

 

DOH!! Thanks for reminding me. I'm hoping I will be glad I went the route I did at some point.

 

 

 

 

Lots of battery tenders out there feature a 'lighter' adapter that you can just plug into the power outlet in the car to charge it. Anyone have experience with one of those and our F-Types? Curious if/how they work compared to something wired directly.

 

I think the sockets are ignition switched, so are dead when the car's off.

 

 

 

I've never seen an outlet in my trunk ('16). One of the early threads on this forum regarding the tender has the installation instructions for the '14. I believe it was posted by Foosh.

 

That would make sense - you wouldn't want your boot fridge to let the beers get warm.

 

I think the original kit sold by Jag included a power outlet to be installed in the trunk. That's what you see in pictures that show a power port in the trunk.

 

isn't that the port you plug the charger into?

 

Right, but you wire the port in yourself, and presumably wire it into the battery so that it isn't switched. In my case, I attached the Battery Tender pigtail as the MY14 directions show, to the power bus near the battery. I just pull out the pigtail from the battery compartment when I need it, and close the trunk on the battery tender cable.

 

Ctek has a build-in kit - and, it is to some level easier to build in as the kit Jag sells (sold?) as it doesn't need a screw on the backside of the panel.
On the other hand, a rectangle hole is a bit more work to make compare to just drilling a hole.

The one I used - benefit compared to the Jag one, it has indicator leds for battery status.

 

I would echo KVO's comments, the CTEK is the same as the jaguar accessory, but with a charge indicator. You can use the installation instructions for the official accessory when installing (not that they are the easiest instruction to understand). If you want to know more you can see here -