V2H does not interest me all that much. It could be useful I guess in limited situations, but I have not heard of many that can push all that many amps. I guess 10amps at 240 is better than nothing, but I better shut down every significant load first - it will power the fridge and lights. Of course the refrigerator could probably be done with an extension cord.
Home Charger Reviews and FAQs
- Thread starter SpaceEVDriver
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Your thinking of V2L which uses an adapter plugged into the cars charge port and outputs power using the vehicles onboard AC inverter.
V2H capability should be able to output 50+ amps using the DC connection on the vehicle that bypasses the vehicles onboard inverter system. With V2H the EVSE (charger) will have a built in inverter that coverts the DC power from the vehicle to AC a then uses it to power a transfer system for the home.
All of this can be overwhelming. It’s taken me awhile to read up on and research. Taken over a year actually to get to grips with the nomenclature, and systems. @SpaceEVDriver can articulate this information in a post better than I can for sure.
The Lightning's non-V2H “Pro Power Onboard” 240 Volt outlet provides up to 30 Amps for a total power of 7.2 kW. On a normal day, if we’re not charging a vehicle or taking a shower, we generally stay well below 5 kW, even when the HVAC is running. And I can reprogram the water heater to draw less power if necessary.
We could also run an additional 2.4 kW from the 120 Volt, 20 Amp outlets in the Lightning, which are on a second inverter.
My current setup is that I charge my whole-home backup batteries with the Lightning at 30 Amps, 240 Volts. I know it’s overall less efficient to go from DC to AC to DC back to AC, but it’s super simple and I can run this at any time even if the grid is still up.
The Lightning's V2H can provide 40 Amps. The extra 2.4 kW just doesn’t seem worth all the extra cost and hardware to me. Especially since I can already get that 2.4 kW with a few extra extension cords.
Thanks for that clarification. I had not considered the V2L as the actual charge port. I was thinking less of the hardware involved and more of the function of providing a 240V source which you picked up on. In that case, I have no need for either V2L nor V2H.
This right here ^ is much more preferred and useful in my case.
Thank you both for the education. You guys and this forum are such a great wealth of information.
Sorry, got my numbers confused. 50 amps, which is 10ish kw. That is not all that bad, but kind of a trickle with a house that can surge 200 amps. That said, it will run the house - without the AC, stove, water heater, and clothes dryer - probably.
A 24kw generator is probably on the small size for a lot of the houses in Texas.
A 24kw generator is probably on the small size for a lot of the houses in Texas.
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