Thanks Foosh. It will be interesting what, if anything more, others have to say on the subject. MY guess is if I did nothing - no battery maintainer. no tire savers, etc. - spring will spring and my car will start right up (of course I could be wrong) without any issues whatsoever.

(I also harbor visions of that perfectly clear winter day - no salt, no sand - and taking her out for a nice long ride).

Best regards to all,
RJ52

 

I installed my Battery Tender Jr. using the directions for the Jaguar charger:
http://www.mediafire.com/view/6gasar...arging_Kit.pdf


The link for this is in the sticky topic with manuals at the top of the forum. Note that this is for the convertible; the configuration under the trunk in the coupe is likely different. But the power distribution panel may be the same or similar.

 

You're likely right Rick for this year. As time passes and the battery is no longer new, it will wear down. It's hard on the battery to let it drain right down. It's better for lead acid batteries to be kept charged. I followed the diagram from the link in this thread to hook my battery tender to my car. I did not check to see if current was going to both batteries but I'm assuming if it worked for DJS's car it will work for mine. I may check it later.
Don

 

If you attach the positive to the fuse block as per Jaguars specifications and directions. It will charge both batteries.

The second smaller battery is not for starting the car, it is for supplying power while the engine is stopped during the ECO stop start function.

 

That's what I initially thought and posted, but one of the so-called experts on one of links you posted said otherwise. As I said, theories and opinions were all over the map.

 

Oh, yes, that is true. However, having a flat battery in general is not a fatal issue for any car - the ECU will re-learn its dynamic settings in fairly short order. Having said that, *I* personally wouldn't care, others might.

 

Just remember that if you disconnect the battery and close the trunk, you'll need to hook jumper cables to the front jump points in order to open the trunk, which only has an electric release, as far I know. (This is for the convertible.)

 

I have a battery tender Jr. (low charge rate so won't destroy gel mat batteries). 've used one for years to maintain the charge on my vehicles batteries with no problems. But the battery access on the F type is a pain in the ...
Does anyone know if there are any problems created by connecting to the under hood jump start + terminal and a nearby ground ?
Thanks.

 

On my 2015 R I connected the tender to the underhood jump terminals all winter and it was fine.
Lawrence.

 

Thanks. I'll give it a go.
Bob

 

I use the undergood terminals on my 2014 as well. It does work, although the car won't lick with the hood open. If I don't charge it every week or so I will get lots of silly errors. Probably it sat too long with a dead battery before I bought it. Add that to a long list of minor niggles to raise at the 15,000 mile service.