Online Forum for the 2012 Rav4 EV

1. plug into (timed?) 120V 15A. This means there's 2 plugs going into your car: 1 for charging, 2nd for this gizmo.
2. warm battery fluid
3. enjoy heat, full regen from start, full battery with longer range, improved battery lifespan

This upgrade has a long history of use. I'm shocked Tesla doesn't offer it as a cold weather option (not block heater).

Examples may be
https://phillipsandtemro.com/wp-content ... -kW-LR.pdf TSG 6012011000MC
https://www.etrailer.com/Vehicle-Heater ... 13100.html

What kind of improvement have others realized? Has anyone done this? Group buy for those who want to?

I may be wrong, but Doesn’t pre-heating or cooling while plugged in do the same thing?

Yes.
It may be easier to find 120V when running errands & battery is cooling, not plugged in.
Look at Plugshare filter 120V only & ask when you're doing errands locally. Keeping the battery warm during winter would give summer time range & other benefits.
https://insideevs.com/news/408521/combu ... ge-sweden/

Can't you just use the 120v EVSE that comes with the car to pre-heat?

I thought 120V EVSE would only charge battery at slow rate, then have efficiency losses. I thought Level 2 6.6+kW was needed for preheat without using big battery.