Hi Iain, thanks, I forgot to mention that the first two cells nearest the +ve post were down on electrolyte, not to the extent that any of the plates were showing though and I did top them up with de-ionised water before I charged it up. Fingers crossed that was the only problem, it's been ok since.Hi Kithmo,
I hope your 12v battery will last until you trade in the car.
You have not said what type of battery it is but if it is not ”maintainance free” might be worth checking electrolyte levels and if necessary topping up with distilled water.
Run out of time, to busy topping up the washer bottle !.very confusing for the service technicians at the dealers I suspect, which is why they probably have never checked it at the services.
Is that based on ICE use? Would use in an EV be any different? Perhaps less high rate discharging with no engine to turn over?The life of a Lead acid battery is usually 5 years for good performance, a 12 volt Gel is 7 years ( No top up required!)
Lower charging rate is not necessarily a good thing, sulphation of the plates and inconsistent electrolyte concentrations occur if the battery never gets geed up with a high charge now and then.Is that based on ICE use? Would use in an EV be any different? Perhaps less high rate discharging with no engine to turn over?
That's about normal. You don't want it going up to the max, bad things can happen.With regards to this 12v battery, I fully charged my car today and noticed that the 12v only went as high as 13/14v. Is that normal or should it get up to the max 16v marker?
That’s normal MrGWith regards to this 12v battery, I fully charged my car today and noticed that the 12v only went as high as 13/14v. Is that normal or should it get up to the max 16v marker?
Just to clarify, did you charge the 12 volt battery or are you referring to charging the HV traction battery @MrG ?.With regards to this 12v battery, I fully charged my car today and noticed that the 12v only went as high as 13/14v. Is that normal or should it get up to the max 16v marker?
I'd need to have another look to be sure of what the actual figure is then. It was after charging the main battery from my granny charger, not the 12v.Just to clarify, did you charge the 12 volt battery or are you referring to charging the HV traction battery @MrG ?.
When you boot up the car WITHOUT depressed the foot brake at the same time, you will only see the state of the 12 volt battery condition being displayed on the 12 volt battery gauge.
If you fully boot up the car to the READY condition, by pressing the foot brake at the same time as hitting the START button.
The car is now receiving a charge to the 12 volt battery via the large HV traction pack.
THEN you should see about 15 volts shown of the 12 volt battery gauge.
This is seen as two full white bars ABOVE the centre 12 volt mark ( six o'clock position ) on the gauge.
HiHi, I’ve had to call MG Assist / AA out again because my 20 plate MG ZS EV won’t start (3rd time in 10 months). Main battery fully charged, its the 12V that keeps letting me down - not enough power to fire up all the start up checks, running lights etc that come on to get into ‘Ready’ mode. The car is booked in for first service in a few days, dealer is going to check the battery and the brake light switch, but has anyone else had this issue?? Otherwise, I love the car, but always worried every time I go to start it!