My CTEK MUS4.3 doesn't have an on/off switch - and doesn't need one. It's fully automatic and varies the rate of charge depending on the battery's needs.

 

You should look into an Agera, At least you won't be stuck in one gear!! Hehehe

 

This is a joke right?...

 

It was a real advertisement from CTEK, a company with a sense of humor. And it got your attention.

 

And yes, the Koenigsegg does come with a CTEK.

 

Thank you for all your interest regarding my purchase of the Jaguar CTEK private label 3300... I hope I didn't waste my money and time as it shipped from the UK in is now on a first class trip with caviar and beringer wine!!.. Apparently this is a dated CTEK model from some comments.. If it doesn't have an AGM mode then it's utterly useless, I won't chance putting it on a 500.00 dollar battery that's 6moths old. I had 4.2 volts left in the battery a few days later after dbl. locking the XK which I will never do again as I heard that all XK's drain a battery in dbl. lock mode!!!! Wow!!! Thanks Jag!!
Anyway I was Able to use my GF's SUV to host a jump after Parallel connecting to the terminals. I ran the SUV for about an hour charging slowly and then turning over the Jag!!! Boom started right up and charged for about 40 minutes off the car alternator, tested the battery and it read 12.6 volts... Good, I have disconnected all accessories including dash cam which is connected to the OBD port.. Nothing is Parasitic in drawing the battery!!!... I'm waiting the Jaguar CTEK from Rimmer UK... Hopefully 🙏 I will be able to trickle the battery...

 

Not sure why you are blaming double locking for flattening the battery, everything I have read about double locking a modern Jaguar tells me the opposite - that double locking helps reduce battery drain because it shuts down several modules earlier than single locking.

 

Double locking is not available on USA market vehicles, as it prevents opening the doors from the inside. US members who "double lock" their X150 will get a "beep beep" from the sounder. That double beep is an error message that means your car is not double locked.

Double locking is not available on USA market vehicles because the US Government - NHTSA, the National Highway Traffic Safety Administration - deemed it to be unsafe. Double locking is popular in Europe because it makes cars more difficult to steal. However, because the doors cannot be opened from the inside when double-locked, a small child or other passenger can be trapped inside and die from extreme heat.

When you double-lock your car, the beep-beep is an error message to tell you that your car is not double-locked. Visual confirmation that your car is locked is that your side mirrors automatically folded in, unless you disabled that feature or your car is not equipped with that feature.

For more information:
See: NHTSA January 2009 Double Locking

 

@Matusco Although the CTEK 3300 does not have a specific AGM mode, it can still be used with an AGM battery. The CTEK 3300 won't damage an AGM battery; but it might not keep it fully charged to its maximum capacity.

Here's what CTEK says:
There are many different types of car battery available today, including wet cell, calcium and Absorbed Glass Mat (AGM) . Each needs to be maintained in a slightly different way, but all of them can be charged and maintained with a CTEK 24V or 12V battery charger. ... every CTEK charger will charge, condition and prolong the life of all types of car battery". See: CTEK UK
​​​
Stuart

 

I bought a Ctek that has an AGM setting, but looking in the manual, it appears the AGM and normal have the same charging profile. Without specifying what’s different, it appears to be just a marketing scam. Anyway, I’m currently not using the Ctek as I’ve had it turn its error light on more than once, resulting in my battery not being maintained (and I had mounted the sucker high on a wall, and it’s a pain to get up there to reset it). Using my trusty Deltan Battery Tender (not the junior) instead.

 

My battery tender/maintainer is not a CTEK, it is a generic auto parts store offering (Supercheap Auto here in Oz) but it has worked perfectly for many years now.
It does not have an AGM setting, rather it has three settings - gel, lead acid and calcium.
Years ago after some trepidation and research I set it to lead acid (as AGM is still lead acid just not flooded cell) and hey presto perfect operation and zero problems.
So I guess you don't need an AGM setting on an older CTEK and a lead acid setting will do the trick.

 

Yes, I do believe that is true as you can light a Cigar when parked and making out with your hottie that you met because you own a JAG XK/R!! Hahaha... If it's a good Maduro Fuente Opus X... Smells great!!!
Just like any other vehicle that has a cig. Lighter, the car can be completely off... And you can light a smoke...

 

off buttons cost money????

 

When my battery was drained to 4.2 Volts I jumped the XK and let it charge up running the car... It says that an AGM battery should never exceed 14.8 volts as it can ruin the battery even if for only a brief period... I'm wondering if I damaged the battery?.. I test it and it still holding a full charge...

 

Think you missed the follow up posts, the lighter socket is only active while in convenience mode if the car is off.

 

Bought my first jag last weekend!
I read every reply in this post… please dumb this down.
1. i need a magic battery charger correct?
2. which one works the best?
3. Where do i attach it to the car?
4. What setting to i put it on?

thank you

 

Welcome to the Forum, Ben. You'll find lots of useful information and helpful members here. I noted that your Public Profile shows that you have a 2014 XKR. That's important, as hooking up a battery maintainer to a 5.0L model requires that the negative (black) ground cable be attached to a chassis ground, and not to the negative battery terminal which has a BMS (Battery Monitoring System) module attached to it. Attaching the battery maintainer to that negative battery terminal can damage the BMS module. Note that 4.2L models (2007-2009) don't have the BMS module.

I attached my CTEK to the remote battery terminals in the trunk using the alligator clips and have had no problems. You probably can do the same thing.

There are many brands of battery maintainers. But first terminology matters: make sure you know exactly what to buy - what's the difference between a trickle charger, battery maintainer, and battery charger? You don't want a trickle charger because it's a "dumb" device that constantly charges without any circuitry to shut itself off when the battery is fully charged. Overcharging will destroy a battery. Proper battery maintainers include circuitry that prevents overcharging, and vary the rate of charge depending on the needs of the battery. But they're designed to charge slowly, at around 4.2 amperes, and can't quickly charge a dead battery. For that you'll need a battery charger that's rated at 10 or more amps.

​​​​​​Note that "Battery Tender" is a brand name that is owned by Deltran USA LLC in DeLand, FL. I cannot recommend their Battery Tender Jr,. Here's why: See my Post #6

I highly recommend the CTEK brand of battery maintainer and own two model MUS4.3, one for my 2009 XKR and the other for my 2013 XJ. I keep them connected at all times when parked in my garage. I recommend the CTEK MSX 5.0 a newer and less expensive model.

You can easily find answers to your questions on this Forum by using Google. It's easier than the Forum 's Advanced Search function. SImply preface your Google search with "Jaguar X150 Forums" followed by a few key words that summarize what you're looking for.



Stuart
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Thank you.. Not sure why CTEK includes a Cigartte lighter plug to maintain the battery

 

In some cars the cigarette lighter socket is always active, but not ours.

 

In addition to the CTEK 3300 made for Jaguar from Rimmer out of OZ... I purchased the NOCO Genius 1 which can condition my AGM battery.. I also picked up this sweet port for the exterior of the rear end in which I did some Mock Ups I need some votes on where I should mount.



This is acceptable

Not a fan of this location

Like this too but looks like a damn EV we