Possible overloading EV solution

[Spaceman]

Just saw this on a Facebook and think this could be the solution EV owners have been needing to get off grid with their EV SUVs. https://gosun.co/products/ev-solar-charger-deposit

Now granted it's only 30 miles per day, But still, that isn't to shabby. When you get off grid, keep put for a couple days and you should be able to capture enough juice to get back to pavement.

 

[smritte]

The key words you used here was "charge for several day's and get back to the pavement". That is a very realistic view on this system. Unfortunately people are going to think these are magic.
My post is not a slight against you but the fact that I see these starting to pop up and I don't like this type of marketing. The site doesn't give any real numbers. To me, they are purposely misleading. As I say below, some of us already have the same or better set up then what's here. We just need to add in the plug.
Again..Please don't take offence to my post.

Lets examine this product and see if I can put this in a proper perspective.

Take a Rivian. The battery is about 150KW. 20% battery is 30KW. This is the middle ground. They make three battery's.

Here's the spec off the solar battery site
Solar Output Closed: 200 watts, 25-40V DC. This is what the panel puts out under a load. The load being "charging the battery".
Solar Output Open: 1,200 watts, 80-120V DC (why do I need open circuit voltage?) This number represents nothing.

Assuming you have perfect positioning of the panel and ideal conditions, how long will it take their panel to charge 30000w with 200w? Figure 8-10 hours of direct perfect sunlight to get 2000w (not 20k). Draped across the car, double that (not ideal). Even longer if the panels heat up.

I have a hard time believing that size of a panel only puts out 200watt by the way. Unfortunately that's what they say.

Lets look at the other specs and see if we can figure out what they actually have.

They claim the total weight is 70 pounds.
Assuming the panel and housing only weighs 15 pounds, you need another 5 pounds for inverter and cable. That leaves 50 pounds of Lipo battery. A Jackery 3000 is about 64 pounds and is huge compared to what this company shows.

Odds are the Jackery has the same or more power. Batteries are heavy. I personally wouldn't charge my car off a Jackery but you could if you wanted to. If you already have a good folding panel array and a Jackery, you probably have a better charger.
Here's a clip from Jackery on charging the 3000 with their solar.

6 - 7.5 hours of solar charging with 6 SolarSaga 100W solar panels. Read "600 watts in perfect conditions". This is to get 3k of battery.

This is a good example of people marketing something to people who have a need but don't realize what it takes to get there.

The issue with electric cars is how much power it actually takes to charge them and solar is very inefficient right now. Maybe one day we will be able to harness more then we do from sunlight. Personally I would have the panel directly charge the car. You loose too much converting it back and forth.

Do these things really work? Yes. Don't be in a hurry, don't expect anything with cloud cover and waiting several days is better then walking 20 miles. Look at it as carrying one gallon of spare fuel but you have to drip it in over several days.

 

[Overland Shark]

Low and SLOW ha ha ha

 

[M Kesik]

Well this could be a good incase of emergency, but think about it, 30 miles is onroad driving and best case example. Offroad consumes WAY more energy to move our rigs. This might mean 15 miles of range.