Continues charging at low wattage after meets target

[JeffL]

I’m having an issue where even after my car reaches 90% the emporium charger will still sort of trickle charge at around 7 W. It’s not a lot, but it adds up over time. Anybody else having this issue? I have even set up the Emporium charger so that it’s not supposed to be charging right now but the charge continues.

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[TheVirtualTim]

Yep -- I sometimes see this on mine and I sort of wondered if it has something to do with the changes to 12v battery management.

To know for sure I'd need to plug in my OBD scanner and check the values before/after event to see if it was continuing to bring up the 12v. I haven't done that ... so this is pure speculation on my part.

 

[PA27]

There was a similar post couple months ago after an update where lots of us had it going on but next update stopped it for mine and many others.

 

[Aubury]

Mine does this as well. Supposedly it's a bug, but I'm not too worried about it personally as it seems to be keeping the 12V battery topped up, which is good with how small it is in the Mach E. Only worry I have is if it's running pumps the whole time then that's unnecessary wear on those.

I wouldn't worry too much about the cost for 7 W. If you were continuously drawing 7 W 24/7 (you're not going to) at a rate of $0.15/kWh it would only cost you about an extra $9.20/year in additional electricity. If it really concerns you, it looks like you've got a Wifi connected EVSE so you should be able to program time-of-day charging. It'll disconnect the EVSE when it's outside of those scheduled times and won't draw any power, outside of what the EVSE itself draws which will be quite small at idle.

 

[Mach-Lee]

It's a bug on 2023.5 vehicles. Fix is coming.

 

[azerik]

Lee has spoken.

 

[JeffGo]

It's a bug on 2023.5 vehicles. Fix is coming.

Hmm. My MY21 Job 1 (6.6.0) + Emporia was doing this Friday night (overnight temps around 13F). I hadn't seen this in the past. I'm not overly worried and chalked it up to low temperatures. I'm just thankful that the charging session met it's 90% target after seeing other posts about not charging.

 

[JeffL]

Hmm. My MY21 Job 1 (6.6.0) + Emporia was doing this Friday night (overnight temps around 13F). I hadn't seen this in the past. I'm not overly worried and chalked it up to low temperatures. I'm just thankful that the charging session met it's 90% target after seeing other posts about not charging.

This makes sense as the garage has been pretty cold lately in Ottawa Ontario so maybe it’s just the temperature thing.

 

[ChasingCoral]

I wonder if this might happen to a non 2023.5 Mach Es with a power drain?

I saw it in my Lightning all throughout December when I had Christmas decorations running in the truck. In my case the truck was on and ProPower Onboard was running.

Could this happen in a Mach E? Is it possible a continuous 12v draw from a directly-powered device cause repeated calls to the HVB to charge the LVB?

 

[JeffGo]

I wonder if this might happen to a non 2023.5 Mach Es with a power drain?

I saw it in my Lightning all throughout December when I had Christmas decorations running in the truck. In my case the truck was on and ProPower Onboard was running.

Could this happen in a Mach E? Is it possible a continuous 12v draw from a directly-powered device cause repeated calls to the HVB to charge the LVB?

I suppose it could but not in my case. No 12V loads ever.

Yesterday afternoon I plugged in the car after some short rides (21 Job 1), as it was getting cold again. After 2 hours (4:59 to 7:09PM) it had fully charged to 90% and power from the charger was back to zero, temperatures in the low 20s F. Between 2:43am and 2:58am, the charger was delivering a lot of power, mostly around 7kWh with a brief peak near the end of 9.35kWh (total was 1.78kW, so about $0.24). Temperature was about 18F.

 

[JeffGo]

I suppose it could but not in my case. No 12V loads ever.

Yesterday afternoon I plugged in the car after some short rides (21 Job 1), as it was getting cold again. After 2 hours (4:59 to 7:09PM) it had fully charged to 90% and power from the charger was back to zero, temperatures in the low 20s F. Between 2:43am and 2:58am, the charger was delivering a lot of power, mostly around 7kWh with a brief peak near the end of 9.35kWh (total was 1.78kW, so about $0.24). Temperature was about 18F.

And again, 9:13AM to 9:28AM (exactly 15 minutes, again, 22F), no driving. Total power delivered this time 2.945kWh, about $0.40. That must all go to keeping the HVB battery above a certain temp? (LVB @ 87%)

[FordPass thinks the Energy added was 159.4kWh, must be solar charging, lol]

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