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Model specific boards => Golf mk7 => Topic started by: rwleigh on 16 May 2021, 19:17
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Just checked my battery again and it seems to be holding up quite well for nearly 5 years old and considering how many people have battery issues with these cars.
(https://i.postimg.cc/NMvF9Nj5/battery-05-21.jpg)
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Those readings look good particularly the voltage. Had the car been standing for a couple of hours prior to the check? Can make quite a difference to readings if just run.
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Those readings look good particularly the voltage. Had the car been standing for a couple of hours prior to the check? Can make quite a difference to readings if just run.
Been standing about an hour after the last run, looks like it might last a while yet though.
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Those readings look good particularly the voltage. Had the car been standing for a couple of hours prior to the check? Can make quite a difference to readings if just run.
So the best time to test the battery and get a good reading is after it's been standing for a few hours?
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Best off checking when been stood for a while to let all the systems power down fully and enter there "sleep" state.
There can be a few systems which can remain active for a while hence giving you a false reading.
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Well now I’m even more confused :grin:. My stop/start rarely works but my battery voltage says 14V on my OBDeleven after cars been sat for 24h
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14v is a high reading for a battery that has been idle for 24 hours, A 12v battery should show 12.5-12.8v under normal circumstances.
A 14v reading is what you would expect to see with the engine running and a healthy alternator is charging the battery.
I would try another battery to see if it makes a difference.
Or try your Obdeleven in another car to see what reading you get for a different idle battery.
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Stop/start seems to have stopped on mine but TBH it's been a while since it's had a good run out. Note to self, get out more!!!!
T'other half's Fiat 500 stop/start is also tempremental, pottering around doesn't charge battery enough for it to initiate. No problems after it's had a good run out.
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Just checked my battery again with the OBDeleven and it shows a reading of 11.3v and my stop/start has worked once in 2 or 3 months. I'm going on a long drive Saturday so I'm not sure if that will be a good thing for it or if I should be worried in case it doesn't start when coming back.
Might get a new battery next week for piece of mind? Don't think I can buy Pro activation for the OBD11, get a new, battery, and code it, all on Saturday morning.
Edit// Also, what is a good replacement battery?. It's a weekend car as I have a work van. AGM battery? Is one from Halford ok? Prob one of their own brand ones?. Could pick one of them up off the shelf instantly
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Edit// Started a new thread
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I've got the Halfords AGM battery in mine. So far so good. I believe it's actually made by Yuasa and it has a 5 year warranty 👍
If you're going to fit it yourself the Bosch AGM battery also has a 5 year warranty and is another good option.
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May be worth trying an intelligent battery charger as most have a repair function that is supposed to desulphate the plates and restore some of the charge capability. At about 40 pounds seem quite reasonable.
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May be worth trying an intelligent battery charger as most have a repair function that is supposed to desulphate the plates and restore some of the charge capability. At about 40 pounds seem quite reasonable.
I use a CTEK MXS-5.0 which has a reconditioning mode that I use maybe once a year.
This shows what it does in the various modes.
(https://i.postimg.cc/DyzHRLC5/mxs-5-0-cycle.jpg)
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So random question. When I hold the trip button below the speedo to check the battery level is says the StateOfCharge is 60% or 70%. What should the correct reading for a healthy battery be? (baring in mind I only really drive it on the weekends).
Thanks
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So random question. When I hold the trip button below the speedo to check the battery level is says the StateOfCharge is 60% or 70%. What should the correct reading for a healthy battery be? (baring in mind I only really drive it on the weekends).
Thanks
I'll try and remember to check mine and let you know.
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So random question. When I hold the trip button below the speedo to check the battery level is says the StateOfCharge is 60% or 70%. What should the correct reading for a healthy battery be? (baring in mind I only really drive it on the weekends).
Thanks
It should be 100%, I would get a charger if I were you. You're obviously not doing enough mileage to keep the battery full and therefore it will fail early like so many others.
Here's my battery SOC today.
(https://i.postimg.cc/j5NYyXvQ/battery-full.jpg)