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Discussion Starter · #1 ·
After reading a few posts here about the reliability of the F-Type battery and the need to keep it fully charged, I started looking for the appropriate CTek charger.
While it seems the Ctek 5.0 MXS is good for the job, the spec indicates good for capacities up to 160amphrs, which got me thinking about the Jag battery specs.
So far, I have been unable to find any reference to the battery from Jaguar and, more concerning, I have also been unable to find a dealer offering any battery that will "fit" the 2021 F-Type V6. That obviously leaves the dealer option, but I am curious about why it is so special that I can not find an aftermarket supplier. I am told the 2021 model has only a single battery. I think I also read that it is an AGM type but can not confirm this. So, 2 questions: does anybody know the type and capacity of the OEM battery?; and does anyone know a suitable after market replacement? While I do not expect to be buying a new battery for quite some time, I am curious why it is so hard to find these answers.
 

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Discussion Starter · #2 ·
Having just had my new Jag F-Type delivered yesterday I ca now answer my own questions!! AGM battery 90 amp hrs 850 crank amps.
Not a very big battery, considering how critical is seems to be to every day performance. Anyway the new CTEK arrives tomorrow, so I guess it will go on charge till the weather warms up a bit (20F here today)
 

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It is important to note that new batteries are rarely fully charged on installation - and these cars rely on full battery voltage for correct operation of all the electronic modules. Do yourself a favour and get a CTEK charger, and use it when the car is not in daily use. If the voltage drops, all sorts of random electrical issues can appear - which prompt the owner to exclaim that he has bought the mythical Jaguar lemon. Invariably the cause is low battery voltage, and nothing else wrong with the car. The problem most often lies in an old battery, a defective battery, a oattern of infrequent and short use of the car and occasionally, a loose connection, but this is rare. It is always "battery first" that should be the mantra.
 

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New owner here too. When I had it smogged in AZ 2 day later battery dead. Seams when they plug into you OBOII under the cash the computer will not go to sleep and will drain the battery. Even with Ctek hooked up. You need to disconnect the negative terminal for 30 seconds to reset it. Battery should be charged out of the car and it is not to bad to get out. If dead I was told charge for 5 hours at 5 amps and then the rest at 3-2 amps till topped off. Worked for me. No tender here as it gets driven every few days.
 

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New owner here too. When I had it smogged in AZ 2 day later battery dead. Seams when they plug into you OBOII under the cash the computer will not go to sleep and will drain the battery. Even with Ctek hooked up. You need to disconnect the negative terminal for 30 seconds to reset it. Battery should be charged out of the car and it is not to bad to get out. If dead I was told charge for 5 hours at 5 amps and then the rest at 3-2 amps till topped off. Worked for me. No tender here as it gets driven every few days.
New 2016 R owner here. Thanks for posting. Mine also died two days after e-check. I will try this.
 
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