Vehicle to Load (V2L) - Any Information or First Hand Experiences?

[Catsailor]

Has anyone successfully used the V2L capability to recharge the 12 volt battery?

 

[Sloucher]

I can't see any reason why it wouldn't work, however why not simply turn the car on and let the inverter and HV battery do their thing?

 

[Catsailor]

I'm trying to plan for a 12v fail when, for example, I return to an airport car park after a couple of weeks away.

 

[Sloucher]

You'd probably be better off getting yourself a 12v booster, such as:
12v Boost

 

[MG Clive]

You'd probably be better off getting yourself a 12v booster, such as:
12v Boost

Link not working @Sloucher

 

[Sloucher]

Apologies for that. Try a Google search for "Portable Car Battery Jump Starter". That should give you some choices

 

[Catsailor]

Apologies for that. Try a Google search for "Portable Car Battery Jump Starter". That should give you some choices

I probably will but I still own a 12 charger and will definitely buy a V2L adapter now that's been fixed on my ZS.

 

[Les burrows]

I'm trying to plan for a 12v fail when, for example, I return to an airport car park after a couple of weeks away.

I have left my MG5 several times at airport car parks once for 17 days in my 5 years of ownership of two different 5s with no issues I always make sure the HV battery has a decent amount of charge around 70% and I don’t think that dropped by more than 2%
But as pointed out above a booster pack is good to have as a back up.
Les

 

[TassieDi]

I can't see any reason why it wouldn't work, however why not simply turn the car on and let the inverter and HV battery do their thing?

If the 12V is dead, you wouldn't be able to turn the car on. A 12V battery starter is the shot.

 

[decrep]

Yes, with no 12v, you can't start V2L.
I just disconnect the -ve lead when we go away.

 

[BOB353]

Why not use a small solar panel about 10W.

Oops, work well in Aussie Land but probably of little use over in UK

Sorry but couldn't help myself.

 

[Catsailor]

If the 12V is dead, you wouldn't be able to turn the car on. A 12V battery starter is the shot.

Thanks clear advice.

 

[Ruislip Resident]

Why not use a small solar panel about 10W.

Oops, work well in Aussie Land but probably of little use over in UK

Sorry but couldn't help myself.

how do you connect such things up. Does it eg charge through the 12v socket ( 'the cigarette lighter socket') or do you need wires going under the hood / bonnet ? Or somewhere else?

 

[Catsailor]

If your car has got the facility, and not all of them have, it will have a 240 volt enabled CCU under the bonnet. It will say
SAIC MOTOR

11473414

EP2CCU6625A

CHN NO

高低压充电集成模块总成

VMAX

230518

AC/DC INPUT(輸入):~85-265V 45-65Hz; 32A MAX

AC/DC OUTPUT(前日):= 230-450V, 22A MAX

DC/DC型号:ZB002-350-014A

DC/DC INPUT(輸入):=230-450V, 13A MAX

DC/DC OUTPUT(演出):= 9-16V: 178A MAX@14V

 

[Gadget Geek]

how do you connect such things up. Does it eg charge through the 12v socket ( 'the cigarette lighter socket') or do you need wires going under the hood / bonnet ? Or somewhere else?

Only if the 12V socket is live with the car off. Otherwise you have to run a cable to the battery.

 

[Catsailor]

It's never as easy as it should be to find the information you need. But I should remember: "RTFM" - read the flipping manual. This should eliminate the 12 volt battery depletion problem
or is this another function promised but not delivered by MG.

 

[BOB353]

how do you connect such things up. Does it eg charge through the 12v socket ( 'the cigarette lighter socket') or do you need wires going under the hood / bonnet ? Or somewhere else?

I have used a 10W solar panel connected straight across the 2 battery terminals, at 10W it does not put out much current so does not need a regulator to control the voltage and works like a trickle charger.

I first used this method on our caravan while it was in storage but also used it on my wife's car when we were away in the van for 3-6 months.

Unfortunately the cigarette socket is not live once the car is locked but you could use a permanent supply like the electric seat , this way the panel can be place on the dashboard getting the sun through the windscreen.

 

[Les burrows]

It's never as easy as it should be to find the information you need. But I should remember: "RTFM" - read the flipping manual. This should eliminate the 12 volt battery depletion problem
or is this another function promised but not delivered by MG.

I assumed you knew that the 12 volt battery gets its charge from the main HV battery which is why I said in my post #528 when I leave my car at an airport or anywhere for an extended length of time I like the HV battery to be at a reasonable level of charge as while the car is sitting there parked the HV battery tops up the 12volt LV as and when necessary this is automatically done in normal circumstances as far as I know this is the case with all BEVs.
Les

 

[Catsailor]

I assumed you knew that the 12 volt battery gets its charge from the main HV battery which is why I said in my post #528 when I leave my car at an airport or anywhere for an extended length of time I like the HV battery to be at a reasonable level of charge as while the car is sitting there parked the HV battery tops up the 12volt LV as and when necessary this is automatically done in normal circumstances as far as I know this is the case with all BEVs.
Les

Yes I knew that the 12v got its charge from the high voltage battery. My concerns were raised when, on return after a 7 day holiday, I couldn't use the app to remotely switch on the heating. The app said the car had gone into sleep mode. Cue concern.

As it turned out the car started without problem. We had 64% battery so it should not have been a problem. But I wanted to work out a solution if we'd gone away for two weeks and come back to a car in deep sleep mode. After much pressure our dealer has, reluctantly, installed some of the missing updates to our "new" 2025 plate car. And I suspect that more are needed. I now understand that one of the battery management system software releases addressed the problem of cars going in to deep sleep mode by arranging for the 12 volt to be topped up by the high voltage battery. Perhaps that is a software release that I need to press for otherwise I would want to have a battery booster or similar to prevent the problem occurring.