Did my ability to search for things intelligently on the internet die when Google search did or are there legitimately no personal umbrellas with solar panels and a battery pack? Like I feel like that would be an obvious thing, and there’s a bajillion beach umbrellas and patio umbrellas that have solar panels. How are there no personal versions for wandering around on a sunny day with portable shade that gets you a charged battery pack? Is this a thing and I just can’t find it or does it not exist yet and all of science has failed me in every way possible?
Sorry for the terrible AI picture, I didn’t create it I just found it on the internet and it was the only one I could find because these apparently don’t actually exist.
- portability
- cost
- efficiency
- return on investment
- market size
I think the umbrella did not satisfy all these parameters enough for it to take off
The weight of a battery pack sounds unpleasant for something you would be carrying for a long time.
Meh, l stick with analog umbrellas. They don’t need electricity to open or close.
You could use a Sekiro shield: https://youtu.be/OCq8adZdKP4 It’d be rigid but… probably quite heavy.
Probably because it would weigh 40 pounds and cost $1700
Nah. You could DIY something like that for 30€ or something, let alone mass produce. The only problem is that the folding would be more clumsy and probably take a bit more space folded
Edit: picture of a real product from which you could DIY one:
I have 2, around 25cm x 30cm and, when perfectly aligned to a strong summer sun, they do 1 watt and 2 watts respektively. Amazing.
Also, sitting outside in the harsh sun with a laptop? No thank you 😁.
This is really niche stuff for when you can’t even reload your power bank once every couple of days IMO.
Now look at the standard umbrella and figure out if it is 25x30cm…
Yeah, that’s my experience as well, you leave them out all day and get half a power bank if you’re lucky. Basically only worthwhile if you’re camping somewhere remote for an extended period of time.
I got one to charge my phone to 1%. Pretty happy
I’ve got a very similar panel myself, in fact it’s probably a bit bigger.
If you leave it out all day, under ideal conditions, it will put around 10AH worth of charge into a power bank, maybe a bit more, so 40-50 watt-hours if you’re lucky, over twelve hours.
Not a worthwhile amount of power.
Yeah this has always put me off solar panels like this, for their cost they make fuck all and if you just need power for a day or two it’s better to get a battery. Only if you need weeks does solar+battery start to make sense instead.
That charges a phone just fine?
I use a smaller panel to charge a battery at a summer cottage. That keeps my and a few other people’s phones charged pretty alright.
Not worthwhile if you’re carrying it around all day.
Why? You can carry your phone and charge it at the same time.
Why do you need to charge your phone during the day anyway? Does it not last a full day?
Slapping one together out of spare parts is not at all the same as mass producing one in a factory.
And whatever you could slap together for 30 bucks would, as I said, in previous comment, suck and break very easily, not to mention that you wouldn’t be able to bring it anywhere close to the ocean for fear of everything corroding extremely quickly.
Yeah. Mass producing can be orders of magnitude cheaper.
It’s a ridiculous argument. Of course something like that could be manufactured, it’s just too niche of a market so nobody has made it a reality (yet).
Lol that tiny ass solar setup ain’t charging both a laptop and a phone, least of all with them running.
That can just barely charge a phone (source - I’ve done a lot of math around this, solar panels have very low output per square meter).
I would think of using the solar panel to charge a battery pack instead, then you can power devices from that. Although you may be charging the battery for 8 hours to power a laptop for 2.
Who said it would?
The picture clearly implies that.
A computer?
There is a cable running from the solar panel to the laptop, implying the panel is charging the laptop.
Which, based on my experience with them, ain’t happening.
Oh in that picture. Yeah I didn’t even think about that, I’d imagine for the original use case you would charge a phone. Laptops need a lot of power, I didn’t even dream of charging one off of a portable solar panel lol :D
I know this sub is called “nostupidquestions” but c’mon.
Do you usually use an umbrella when it’s sunny or would you do it just to charge the battery? I know it’s a thing but only very rarely see people do that, probably not enough to have demand for something like this. Backpacks with solar panels exist but I think these are pretty hard to find too.
This idea is right up there with Glow in the dark sunglasses.
It probably depends on where you’re from, but it’s a thing. In Japan you’ll see people walking with an umbrella to avoid the summer heat.
That’s called a parasol.
I get people think it’s the same thing, but this is a case where words matter.
If someone said “solar parasol” no one would assume they meant the device intended for rainy weather.
I’m pretty sure Japan doesn’t make that distinction.
Ecoflow makes a hat with panels that charge a battery pack.
Can’t you just GET A FUCKING UMBRELLA YOU CONSUMERIST PIECE OF ACTUAL HUMAN EXCREMENT?!
Get a wind powered hat instead
I have the same idea. Photovoltaic cells are sadly all quite stiff …
The cells don’t have to flex to have a flexible sheet of them. Just attach them strategically to a material more suited for flexing.
For real though, I mean, you could also just use a different layout. You don’t have to use triangles and make a circle. You could have a square umbrella that folds out with a little bit of prodding.
Solar cells are crystalline and rigid. You wouldn’t be able to fold the umbrella up and put it away. Also, as someone else pointed out, solar cells work best in sunlight… which you won’t want an umbrella for.
why would you have a solar powered umbrella instead of a parasol? isn’t the only difference one is used when no sun lol
also sound like a bad idea either way
People always severely underestimate how little power solar panels actually produce. In optimal conditions they get around 1000 watt per square meter, but are only around 20% efficient. So that means 200 watt produced at the panel. Once you convert that into something useable and transport it to where you need it, you’ll probably lose another 5 - 10%. And that’s a square meter, that’s more than you can comfortably carry. Think a flat panel of around 2 meters in length and 0.5 meters wide and lifting that above your head, pointed perfectly at the sun.
And the reality is, most solar panels even in permanent installations don’t experience perfect conditions. They don’t track the sun, so most of the time they aren’t perfectly aligned to catch all that energy. They are most likely never aligned perfectly, or if they are just a few days out of the year for like an hour a day. The sun isn’t always out, not just because you know night time, but also because of clouds and other weather or human related stuff. Lots of times there are shadows that prevent optimal workings. Dust and grime also plays a part. But another thing is temperature, solar panels are rated at around 20 degrees C. But when you put a black thing in full sun, you know it’s going to get scorching hot. This also reduces the amount of energy you can usefully extract from the sunlight as well.
The annoying thing about solar panels is they aren’t linear at all. It isn’t like when conditions are 80% from optimal, they produce 80% of the power. No, usually it’s more like 60%. And once you drop below 40% of optimal, you just produce basically zero. With a bit of effort this can be improved upon. For example I use microinverters which can regulate each panel individually, but even then it’s not great. And that’s with state of the art panels, which are very fragile, so they have a sturdy metal frame, a very tough plastic backing and a big ass layer of glass on top to protect them. If you get those more sturdy thin and light panels, you’ll be lucky if they get 15% efficiency (most likely a lot less).
So putting solar on anything that isn’t a permanent installation is usually pointless. It’s way too hard to get those ideal conditions and the panels aren’t very good to start with. If it’s moving, it’s hard to point at the sun all the time. Exception are maybe a small panel on the top of a campervan, which is probably the best case for a mobile installation and gets just a little bit of energy. But only if it doesn’t distrub the wind profile of the van, otherwise it probably costs more in gas to push it along at high speed than it ever delivers back in electricity. One of those small foldable panels can also be useful when hiking for example. You can carry it collapsed on your back and if you take a break, you can fold it out, point it at the sun and get some useful energy for a couple of hours while you get some rest. Putting it on when hiking would be pointless, as it would be bulky when folded out, usually not pointed at the sun and under cover of trees for example.
Maybe the technology will improve in the future, but for now any useful personal solar is very niche.
It’s a better product idea than you make out.
It does require industrial design, and tooling for flexible panel manufacturers to make umbrella patterned panels, as cheaply as rectangular patterned ones.
Flexible panells top out closer to 25% efficiency than 20%. 200-250w is a lot of power. The umbrella itself needs just a hook for a battery rather than coming with one. Solar or USB (up to 240w at 48v power) interfaces. This can power a mini pc with a couple of large monitors with power left over. 1kwh per day/m2 is enogh to cover a high power laptop, electric cooking, or if it were a beach parasol, keep a drink fridge cool, and boom box TF out of the place. Because you need an ebike to lug all of the crap to the beach, it can charge it back up. Besides beach use, a parasol would allow supplementary power for van/RV or even a house, when not beach party boomboxing.
You’re not gonna be lining a flexible handheld device with the kind of solar panels that can achieve such efficiencies even under ideal conditions. If you want an actual parasol rather than an unwieldy, rigid, parasol shaped bed for a bunch of solar panels, this is a job for the more alternative solar cell types that are cheaper and less efficient, but can be made thinner and lighter, and can be stuck on something like that. Unfortunately those generally have piss poor efficiency and they degrade to near uselessness very quickly.
Right, but it also depends on the application. It would definitely be enough for charging your phone a whole day at a festival. I’ve been using one of those “hiking” panels that you can put on a backpack. It is rated at 15 W, but I get less than 5 W out of it, which is still enough for charging my phone and not having to use a powerbank for the whole duration of the festival week; if it is sunny that is. I would love not having to bring both, an umbrella and the solar panel. E.g. Hellfest this year was really hot as hell, it definitely would have worked for this application.
But folding and weight would be a problem, and I don’t see it useful for any other scenarios.
What exactly is the benefit of having an umbrella mounted solar panel over regular solar panels
Protects you from the sun while you walk. Umbrellas are used for that at least in Japan, as somebody already mentioned
Yeah but umbrellas already exist. Why would you want to carry around a solar umbrella with empty batteries to charge as opposed to a regular umbrella with already charged batteries
