[monet208]

Bought a CTEK 5.0 as advised as getting low battery start engine on display due to not enough long runs due to lockdown
Charger got the battery to charged state but still getting low battery warning on display
The issue appears to be where to connect the Negative lead of charger to
Handbook says to large nut by washer bottle but CTEK lead won't reach !
Asked main dealer and they said on nut on clamp at negative battery terminal as the car has a BMS system
CTEK confirmed it has to be on chassis nut otherwise it’s charger will not give correct readings because the car has a BMS system
Bloody nightmare getting different advice!!
Can anyone advise if had similar experience as I am having and where they connected the negative lead of the charger to in order to get rid of the start engine low battery warning on display and the charger working properly
Thanks

 

[Bangor Mark]

I had the same issue that the charger cable would not reach recommended point. I attached it to a bolt on the chassis which was closer to, but still away from the battery. It worked fine for me.

 

[monet208]

Thanks for a helpful reply
Where was the bolt you attached it to?

 

[Bangor Mark]

You haven't identified the MY of your car, but mine is MY2020. The battery is on the right of the engine and there are two bolts to right of it. I used one of these.

 

[monet208]

Thanks
Connected to nut on top of front spring and will check tomorrow morning

 

[Bangor Mark]

Good luck.

 

[PhilSkill]

Yes the nut on the suspension will be fine, you'll soon know if the lights progress to the green on the CTEK.

Makes me laugh all this confusion on Earth point on chassis or negative terminal, there's a blooming thick ground wire between the 2!
The only reason to really use a chassis point is so if you cause a spark, you don't do it near a battery that has just charged and may have released explosive gases.
Of course better to turn off the charger before connecting/disconnecting.

 

[Jonttt]

I thought the reason was that connecting a charger / conditioner directly to the negative in effect bypasses the cars battery monitoring system and thus it get "confused" (thats as technical as I get) and misreads the voltage of the battery, at least initially, and thus throws up errors you would not expect of a fully charged battery ....at least thats what happens in my experience.......my concern was that in connecting the charger/conditioner to the chassis rather than the battery negative terminal was that if your using an "intelligent" conditioner (like the Ctek) then it may not take reading correctly due to the extra resistance ....but Ctek seem to suggest this is fine..........in practice I have had mine connected directly to the battery negative and got full charge on the Ctek indicated and yet low battery messages in the car....these have disappeeared over a day so I've just presumed the BMS was initially confused and then got correct voltage readings after some use........I've not had reason to test the chassis option yet but that is how I now have it connected up...

 

[HmmmUK]

@monet208 I use the bolt shown in this previous post:

Battery Low start engine warning - NEW battery just...

Hi, new to the forum so go easy on me guys and girls, ( probably not the best phrase if your of a certain age like me ). Anyway, our lovely Black 2016 Auto Evoque has since 1st lockdown displayed Battery Low Start Engine, normally when switching off. Vehicle has done 30,000 miles and a recent...

www.evoqueownersclub.co.uk

 

[monet208]

Yes the nut on the suspension will be fine, you'll soon know if the lights progress to the green on the CTEK.

Makes me laugh all this confusion on Earth point on chassis or negative terminal, there's a blooming thick ground wire between the 2!
The only reason to really use a chassis point is so if you cause a spark, you don't do it near a battery that has just charged and may have released explosive gases.
Of course better to turn off the charger before connecting/disconnecting.

Hi
Thanks for the help
The confusion for me was due to not knowing the Evoque which is my wife’s car ( no problems with my XKR) and mixed messages when I found the CTEK negative lead would not reach the charging nut near the wash bottle as stated in the Evoque manual.
Hence asking main dealer who said put it on the nut on the negative battery terminal and CTEK who said put it on a chassis nut
So tried the main dealer Idea got Charged light on charger but still got the low battery message
Now on the top suspension nut overnight and charger says Charged
Off for a run later so will see if the low battery start engine message appears
Must confess had it been possible to get her a new battery for about £200 the same as already on I would have done that had I known the negative point issues but Tanya and many other do not have a decent brand make on stock as UK shortage!!
Thanks everyone for taking the time to help me
David

 

[Col_C]

Must be a quite recent shortage, perhaps I had the last one from Tanya only a month or so back.
The earth point shown in the manual is critical for jump starting, I believe not so much for a low current charger.
The reason your dealer suggested the battery post is because that's what they all do to the new ones sitting in their show rooms, so I'm guessing it doesn't cause any major issues.

 

[monet208]

Given up on this as the CT charger has been on for 24hours+++ and states fully charged but low battery light comes on
Battery checked and not dead but is run down but not flat as the car is used several times a week hence the need to have it charged up
Speaking to our Independent specialist a smart charger will only work properly if the negative clamp is connected to the point in the manual which is too far away for the negative lead to reach hence us using a nearer nut
Clamping to an alternative nut or the negative battery terminal has not allowed our CTEK charger to work properly because of the BSM system on the car so it’s being returned
Specialist has advised of another that will fit

 

[Bangor Mark]

Interesting that this does not seem to have worked for you. It resolved the low battery warning for me. Let us know how you get on with a different charger.

 

[monet208]

Will do

 

[HmmmUK]

@monet208 please update your forum profile with your Evoque year and spec to make it easy to see what you have!

 

[Andy.M]

I think you need a new battery. I had exactly the same issues, charger saying charged yet car saying not charged. My dealer had the car overnight on his charger, tested it and declared it ok. A couple of days later the car was saying low battery again. Put a new battery on and problem vanished. Also the stop/start started working again.

 

[monet208]

I think you need a new battery. I had exactly the same issues, charger saying charged yet car saying not charged. My dealer had the car overnight on his charger, tested it and declared it ok. A couple of days later the car was saying low battery again. Put a new battery on and problem vanished. Also the stop/start started working again.

Thanks for that and I came to the same conclusion a couple of days ago
National shortage of these batteries and Tanya out of stock too as is main dealer- too expensive anyway
But found an Exide ark 800 AGM stop start at £166 delevered yesterday
Thanks
David