Discharge limit (VtL)

[Rolfe]

How do you force the car to discharge below 50% SoC?

Camping out in my MG4, I slept for two consecutive nights in the car without charging in between. As a result the car was on 41% when I got up on the second morning. All I wanted was to boil the flippin kettle, but would it do it? No way. I had to do without hot water for washing, or a cup of tea, that morning. Subsequent inquiry found the discharge screen, in which the discharge limit is set to 50%. It looks as if it ought to be moveable, but every time I tried to move it, although I got the buffering circle, the slider remained at 50%. Even when I tried to increase the % rather than decrease it, no joy. 50% it is.

Surely it's possible to vary this? I get that you'd want a safety buffer so that you didn't strand yourself by draining the traction battery too low, but 50%? Come on! And it really does seem to be variable, it's just that it doesn't shift.

Any ideas?

 

[tsedge]

I wasn't aware of this. It sounds a little bit like some of the issues people have had with reduced power well before low SoC.

Another bug?

 

[Rolfe]

It would be handy if a few people (preferably with the SE) would check their cars to see what's what. I don't think it's anything to do with reduced power. It's just an instruction to the car not to power the VtL once the traction battery is down to 50%. The slider looks moveable, but it doesn't actually move.

I know people have been using VtL for various things, but I can't find the relevant thread(s). It would seem odd if nobody else had encountered the problem.

 

[Bricktop X PWR]

Mine allows me to drop to 20% thus always leaving enough to get to a charger.

Tis on a slider also but I've no idea why yours won't slide?

 

[Rolfe]

Me neither. 20% is reasonable and I could live with that. I'd like to hear from someone else with an SE. It could be another SE-specific bug, but I'd be a bit surprised if I was the first person to notice it.

 

[Bricktop X PWR]

Did you force a re boot?

 

[Rolfe]

Haven't tried that yet.

 

[wattmatters]

My Essence 64 allows discharge setting adjustment down to 20%. Can see it in this vid I made of a discharge test (have timestamped video start):



Can only assume either it's a limitation of your model or there is a fault.

 

[Rolfe]

Thanks for that. My screen looks exactly like yours, except when you use your finger to drag the percentage down (or even up) it looks as if it's going to do it, but then when the buffering circle goes away, the slider is still in the same position.

It's obviously a fault, nobody would design that on purpose, the question is whether it's just something in my car that can be fixed (I need to re-boot the infotainment screen to see if that helps) or if it's a bug on all SEs. If the latter, I'm wondering why nobody else seems to have noticed.

 

[DixieTGS]

Initially I couldn't move the max charge limit on the charging page which looks like a slider because I tried to drag it. Try tapping on the desired value instead.

 

[Rolfe]

OK, will do, when it gets light! It could be as simple as that. It looks as if you drag it, so that's what I tried to do. The fact that you have an SE gives me confidence in this!

I wonder why they supply it at a default of 50%. 20% seems much more rational, although it's good that they let you set it higher than that too.

 

[decrep]

yes tapping works on ours but sliding doesn't.
Bet you're kicking yourself now, for missing out on that hot cuppa. I just have to have one to start the day

 

[Rolfe]

Oh, it's worse than that. I didn't even look at the discharge screen at the time, just filed it away under "figure this out later" and did without. I blame mental exhaustion from living in a cloud of midges for 36 hours.

I only went to check out what I should have done yesterday evening, and that's when I didn't figure out to tap, not slide. I blame a combination of living with several hundred midgie bites for four days, and the painkiller the dentist recommended post molar extraction on Tuesday.

 

[Archev]

Oh, it's worse than that. I didn't even look at the discharge screen at the time, just filed it away under "figure this out later" and did without. I blame mental exhaustion from living in a cloud of midges for 36 hours.

I only went to check out what I should have done yesterday evening, and that's when I didn't figure out to tap, not slide. I blame a combination of living with several hundred midgie bites for four days, and the painkiller the dentist recommended post molar extraction on Tuesday.

A dental midge alliance? That’s all we need.

 

[Rolfe]

I wouldn't put anything past them.

 

[decrep]

Well as long as you're feeling more yourself today, it will be trip to remember.

 

[Rolfe]

I enjoyed it so much that I'm planning a repeat performance next week.

 

[fnegroni]

So did you manage to change the discharge level? I can only do so when the V2L adapter is plugged in.

 

[Edd Beesley]

Oh, it's worse than that. I didn't even look at the discharge screen at the time, just filed it away under "figure this out later" and did without. I blame mental exhaustion from living in a cloud of midges for 36 hours.

I only went to check out what I should have done yesterday evening, and that's when I didn't figure out to tap, not slide. I blame a combination of living with several hundred midgie bites for four days, and the painkiller the dentist recommended post molar extraction on Tuesday.

Tapping is the way:

Still doesn't work for setting a charge limit though, on my SE that seems stuck at 100%.

 

[fnegroni]

Tapping is the way: View attachment 30220Still doesn't;t work for setting a charge limit though, on my SE that seems stuck at 100%

Charge limit on LFP battery versions (SE SR in UK) not available.