[ricerboi]

So some of us in LA are without power and I know that our iX’s don’t have direct V2L capability, but it got me thinking (and scrambling to look for generators).

Can we and if yes, what’s the max recommended wattage to hardwire a pure sine wave inverter to the 12V battery?

I imagine 1500 watts continuous is safe. Not sure if anyone knows what’s the HV->12V battery charge rate so a load wouldn’t drain 12V? This would clearly be for rare/emergency situations (such as plugging my fridge in so my food doesn’t spoil) at that high wattage, and lower wattage for occasional camping needs.

I understand the risks of “tapping in” to a sophisticated battery system. I want to understand where the low risk limit is and where the high risk limit is based on certain bottlenecks in the system.

If anyone has that technical knowledge it would be appreciated.

[OWFPRG]

I've done this with an old Nissan Leaf, not yet with the ix but have been tempting to.

The technical spec (https://cdn.motor1.com/pdf-files/the...ifications.pdf) mentions the HV to 12v transformer is 4 kw (towards bottom of page 3). The B&W sound system has a 1.6 kw amp.

That seems to suggest it's safe to draw 1.6 kw continuously.

It might make sense to do a load test by drawing a continuous 1.6 kw (for example) and monitoring the 12v voltage, with a multimeter or ODB scanner. As long as there's no noticeable voltage drop after say 1 hr, it should be fine.

The 12v battery should have a capacity of at least 0.6 kwh, so even if the DC/DC converter is not working, drawing 1.6 kw for 5 mins shouldn't drain it below 75% i.e. won't hurt the 12v battery (see https://electricscooterparts.com/bat...formation.html).

With the ix, I'd either connect to the 12v battery, or the power terminal behind the the rear passenger side fuse panel. The rear passenger side fuse panel might be more convenient for a permanent setup (partly because opening the hood is such a hassle), but it might be hard to fit thick wires and a large fuse given the limited space.

Please stay safe and I hope your power gets restored soon.

[OWFPRG]

Also, I wouldn't hardwire the inverter. I'd wire the DC-AC inverter to an anderson connector (I've bought from https://www.amazon.com/gp/product/B0...e?ie=UTF8&th=1) and keep the inverter disconnected most of the time.

[BimmerCam23]

Fascinating idea and so smart people thinking this through. Stay safe out there.

[ricerboi]

Thanks for the info and the tip! I definitely like the idea of that quick release so it's not permanently hardwired. Also for the 4kW HV feed info. Obviously not going to hit that limit but good to know the numbers for various use cases.

Sad that V2L isn't more common in our EVs as it would really be an amazing emergency feature. So fair only F150 Lightning, probably Rivian and some of the Hyundai/Kia/Genesis future models are offering it, oh the ugly CT.