Imagine…I have no idea how much of the battery Toyota will let you use. But I think 60% is a good guess. Let's assume it's 1kwh that you're going to get before it idles to re-gen. It's roughly equivalent to one 100ah deep cycle battery. It's not a very big battery. But the ability to recharge it very efficiently is fantastic.
A heated blanket uses about 300 watts of energy to heat. If it is on a 30% duty cycle to keep warm, you'd use about 100 watts/hr on average. That would run the heated blanket for 10 hours between idle starts. Or - basically the entire night. I personally would not use a heated blanket. I'd use proper camping gear to stay warm - but I also grew up doing a lot of cold weather camping so I have sleeping bags good for tent camping in sub zero temps. I also don't think it's a very good idea to rely on a heated blanket because it exposes you to a lot of risk if any part of the system fails. If you break down with sleeping bags - you're not freezing at night. But if you wanted to - heated blanket is do-able. It would work.
For a 12v fridge/freezer - they typically draw an average over time of about 0.8 amps. Or roughly 10 watts. With that alone, the 1kwh battery would last 100 hours. My experience with my own fridge is that I'd get around 3 weeks on two deep cycle batteries in my off road camp trailer. So that sounds about right.
The ability to run a microwave or a coffee maker would be really amazing to me. Or to plug in to my travel trailer and run all the systems. It's such a great system for travel trailer style camping.
And the ability to keep the AC on is really great just for general use for anyone with dogs who goes to hot places. One of the best features of my offroad teardrop camper was the batter/solar powered AC unit. I could run about 1-1.5 hours of AC on full battery pack. That doesn't do much for people comfort, but it was a game changer for the dogs. When you're in Moab in August and it's 100* and you need to go shop for groceries or you want to go to dinner at a restaurant - the ability to put the dogs in a safe air conditioned camper for an hour was really useful. The LC should do that no problem. Even just for everyday use when you have a dog in the car anywhere hot. I've always wanted something like the Tesla pet mode. This should do that really well.
Roof top tent, Annex… And an enclosed igloo tent off back of the Cruiser rear hatch. The ones like Free spirit makes, so the heat and or Ac of vehicle goes into the tent … and the 2400 watt inverter running a Microwave to heat up soup and tea.
Now go to bed in 10Degree temps, with an awesome Sleeping bag (Cabelas magnum, I use) and an electric blanket inside of it… on low (works excellent). A small heater at bottom of annex to take the chill off as the heat goes up to the tent.
Just enough comfort for Overlanding….. and all being done by a Fuel efficient Overland Land Cruiser.
Honestly, that’s pretty freaking awesome.
Ps
Wait a second kids, I’ll get the icecream bars and ice for my Drink from the Arb Freezer… careful on the cloth seats though!