If its cold enough to need an electric blanket vs a sleeping bag that goes to -50f it is very cold. Its a pickup truck, not a backpack. Use another blanket.
See Hueco Tanks near El Paso
I have one designed for auto use (plugs into the cigarette ligher) which draws 37 - 67 W in 10W steps. Thus a 500 Wh Jackery pack should run it 7.5 - 13.5 hours. In terms of running your vehicle battery down convert these power levels to miles range consumed: 0.08 - 0.15 miles lost for each hour the blanket is operated (assuming 450 Wh/mi).
Fully aware my quicksearch didnt find the most suitable solutions. Just wanted to angle the thread away from electric blankets and to solutions for recharging somewhere remote/off the grid. Wind turbines 400/500watt are not humongous. already used on boats and rvs.
It is always fun to think about such things. As many of the responses here and untold numbers of responses to similar threads indicate the available energy from the sun just isn't that great because the sun doesn't shine all the time and conversion of sunlight to energy in the form that can be transferred to the vehicle isn't very efficient. Just as a general rule of thumb a panel the size of the ones one generally sees on rooftops will produce 250 - 300 Watts in full sunshine and the full sunshine equivalent is perhaps 4 - 5 hr/da meaning 1 - 1.5 kWh for each panel. What will really determine the practicality of portable solar arrays is what Tesla decides to do. If they indeed offer a solar toneau then they will have to provide a converter which takes the 10's of volts produced by the cells and and boosts it to the hundreds of volts required to charge the vehicle battery. Such circuits are robust enough that a wide variety of panels can be plugged into them and so Tesla could put additional input connectors for auxiliary panels in the bed (or elsewhere) of the truck. Should they chose to do this then we can think of going out and buying protable 150W panel or panels, plugging it (them) in and getting maybe 600Wh out of each in a day. That wouldn't cover the phantom drain for my X but it is equivalent to maybe a mile and a half of range that would have to come out of the main battery otherwise. In any case we can think in terms of a handful of such panels and maybe 10 - 15 miles a day of battery saved even if most of it goes to cover phantom drain.
Compare the production of your new system to your charging needs.
The point I keep trying to get across that people just don't seem to want to accept is that this may not be possible with solar. Studying the output of the solar system you have should give you some insight as to how the sun behaves in your area at given times of year. Put that together with the rather hefty consumption of a CT, how far you have to drive out etc. Figure out how you will handle a week without sun etc.
oh, we're in 100% agreement there. As much as I get raised-eyebrows for suggesting it, I'd love to see a bolt-on factory accessory that includes a highly-efficient inverter ICE generator and mounts with a few jerry-cans
Your X loses how many miles of range a day?
You do understand that an MPPT system operates at a higher voltage than a 12v system, right? Mine operates at over a hundred volts. Yeah, current panels won't want to get to 400v, but it wouldn't be difficult to make such a system custom. There are portable DC charging solutions out there and given more than a handful of EV enthusiasts in the wild but hundreds of thousands of possible customers would make it possibly profitable.
