Vehicle to Home Battery

[johnb80]

Every year we consume a large amount of energy on Christmas day, 2 ovens, the hob, heatpumps running etc, this year was no exception and as I've done before, I connected our MG5 up to charge our home battery.

Total consumption for the day was just over 74kWh. This was satisfied with 31 kWh from home battery and 43 kWh from MG5. The car link made a saving of £8.36 of the full price electricity we would have used had the MG5 not been connected. Not mega bucks but worthwhile if you already have access to the power supplies/charger to link the car to the batteries.

 

[Jomarkh]

You could have used the free 8 hours from Uswitch and kept the house battery topped up.

 

[johnb80]

You could have used the free 8 hours from Uswitch and kept the house battery topped up.

It doesnt work correctly with Intelligent Octopus GO and apparently only refunds your average use. My average use is zero so it wouldnt really help. I'm very happy with my £5.18p spend for heating, hot water and cooking, seems a bargain to me.

 

[Gomev]

Every year we consume a large amount of energy on Christmas day, 2 ovens, the hob, heatpumps running etc, this year was no exception and as I've done before, I connected our MG5 up to charge our home battery.

Total consumption for the day was just over 74kWh. This was satisfied with 31 kWh from home battery and 43 kWh from MG5. The car link made a saving of £8.36 of the full price electricity we would have used had the MG5 not been connected. Not mega bucks but worthwhile if you already have access to the power supplies/charger to link the car to the batteries.

That's a lot of leccy, about 15 days of our normal usage. (We do have gas CH though unfortunately.)

 

[johnb80]

That's a lot of leccy, about 15 days of our normal usage. (We do have gas CH though unfortunately.)

Were around 40 kWh per day including the heatpumps and 2 x EV. I'm happy with the battery and off peak rate etc it makes it more comfortable Its the ovens and hob that really hammer it on Christmas day along with heating 24 hours etc.

 

[T1 Terry]

We have heating 24hr a day here as well at the moment, mostly solar powered and the wind continues the heating through the night .... it's the HVAC that uses the power over here at the moment .... even the tap water is close to shower temp ....

T1 Terry

 

[stevemgevcom]

Every year we consume a large amount of energy on Christmas day, 2 ovens, the hob, heatpumps running etc, this year was no exception and as I've done before, I connected our MG5 up to charge our home battery.

Total consumption for the day was just over 74kWh. This was satisfied with 31 kWh from home battery and 43 kWh from MG5. The car link made a saving of £8.36 of the full price electricity we would have used had the MG5 not been connected. Not mega bucks but worthwhile if you already have access to the power supplies/charger to link the car to the batteries.

how do you get the car to power the house?

 

[johnb80]

how do you get the car to power the house?

Use a 230v adapter plugged into the MG5 and enable discharge. Plug a LifeP04 3 kw battery charger into the MG and connect the output of the charger to my 28 kWh house battery. The net result is a 3kW continuous discharge from the car and it being fed into the house via the Victron inverters. Dead easy, works a treat. Doing this way allows the full house to be powered and any huge loads (ovens & heatpumps) can run on the house inverters as normal the car just trickle feeding 3 kW into the system every hour.

 

[stevemgevcom]

Use a 230v adapter plugged into the MG5 ?????? whats this? and where do you plug it in?

 

[T1 Terry]

I

Use a 230v adapter plugged into the MG5 ?????? whats this? and where do you plug it in?

I made a thread here back in May on how to make a cheap one work the way you want Converting a non working V2L to a 7kW supply from my MG4

T1 Terry

 

[stevemgevcom]

thanks, which mg5 do you have???????

 

[T1 Terry]

Mine is the poverty pack MG4 51, but they all use the same CCS 2 plug and resistor sizing

T1 Terry

 

[stevemgevcom]

i thought in your initial post you said mg5,

 

[MickeySw]

i thought in your initial post you said mg5,

Did the same on my MG5 FL..

 

[stevemgevcom]

asume ng6 5 fl = the new version? anyone know if it works with the original MG5 ev??

 

[stevemgevcom]

whats an ng6 5fl bloody keyboard

MG5 EV Facelift

 

[MickeySw]

anyone know if it works with the original MG5 ev??

Unfortunately not

MG MG5 EV Long Range

All details and specs of the MG MG5 EV Long Range (2020-2022). Compare price, lease, real-world range and consumption of every electric vehicle.

ev-database.org

 

[siteguru]

i thought in your initial post you said mg5,

It was @johnb80 who said that.

 

[johnb80]

It was @johnb80 who said that.

It was, I did and I have

 

[Rolfe]

I would like to be able to do this, not so much for very heavy load days, but rather as a backup in case of an extended power cut. However, my supplier has no idea how to plug a charger into my GivEnergy home battery. He said something about taking the front cover off but it was an emergency connection in case the battery had discharged so far that it wouldn't charge normally. I have no idea and I'm not sure he has either.

However, I'm not trying to run the house normally during a power cut, just to keep the (kerosene) central heating going and power the WiFi, the computer, the TV and a couple of table lamps. Also boil the kettle and run the microwave from time to time.

The setup I have lets the heating continue to run from the home battery, and gives me a live double power point in the fuse cupboard from which I can run extension cables to power the rest of the stuff. Should be fine. (I would run the fridge and the freezer overnight.)

This should be fine  unless the power goes out just as I've exported my battery. Obviously if there was any reason to anticipate a power cut I simply wouldn't export the battery, but you can't always second-guess it.

In an extended power cut I could spare the battery by running an extension lead directly from the car for the appliances, and keep the battery for the central heating. This would probably be OK because the battery would be replenished from the solar and allow indefinite operation. However, on cloudy days around midwinter, maybe not. It will probably never be necessary but I'd just like to have the capability of topping up the home battery from the car just in case.