Energy to go: the world’s smallest hydropower plant | Eco-at-Africa
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- Опубліковано 6 лют 2025
- Sick of your phone running out of battery? Now you can use a mini water turbine to charge it up. With the invention already a success in India, the German engineer behind it now has his sights set on the African market.
More Africa-related news: www.dw.com/en/t...
No need for mass production to bring down the price..just sell it once in China..
Manik Kalore then he’s screwed up
Very funny, but sadly true.
No need sell,just show this video to China, tomorrow it will be available in the market.
Chines made product won't last even one moth.
The quality will show the difference. How it always does.
500 watts, enough to power a village? does the village run on a few lamps?
are you for real i am your greatest fan
Run see pornos another phone ;)
I was thinking that myself - maybe he meant kilowatts?
@@alansilverman8500 No, he meant 500W.
15 kilowatt installations are quite big and resemble minature powerplants with separate channels and at lest 1,5m of fall.
for realz our old house we used to own would eat up 10,000-14,000 watts a month! one home! Sure we were running heat lamps for our reptile nursery [we'd sell], and the yea half of it was used for my HID lamps to grow the weed i'd sell, but still!
Housing
Designer: Aquakin
Form: Ergonomic Discus
Color: Graphite black
Lighting: tranlucent LED-Circle
Outer diameter: 22 cm
Inner diameter: 12 cm
Height: 6.5 cm
Connections
2x Speed Charger USB Port (1.5A) for charging external devices
Output 5 V
Micro USB Port for direct charging on Blue Freedom Portable
Aquakin Transmission Shaft connection with Turbine Blue M10
Turbine
Designer: Aquakin
Form: Hydrodynamic
Color: Ultramarine blue
Rotor blades: Blue M10R01
Diameter: 12 cm
Height: 6 cm
Generator
Capacity: 5 W
Operating mode: Synchron Generator
Output power: max. 5 W
Nominal voltage: 15 V
Battery
Capacity: 5000 mAh
Technology: Lithium Polymer
Design: Stick Hardcase
Voltage: 3.7 V
Dimensions
Diameter: 22 cm
Height: 5.5 cm
Weight: 690 g
My brother was an electrical engineer and he was a strong advocate for hydroelectric power. He took me to see the fish ladders
at some dam in Oregon. I never looked into hydro, but now I can see what he was talking about. It just has not caught on. Thanks for the video.
I'm an advocate for nearly all forms of power generation. What I see as important is how each are implemented and used. But if I had to narrow it down I would strongly argue for the acceptance of nuclear power.
@@midgetman4206 Yeah same until the days when we can phase it out, it would spread our fossil fuel usage out also so we don't end up with some crysis in the future.
Ummmmm hydro is commonly used on earth today what are you talking about?¿?
Hover, Three Rivers Gorge just to name two but almost all dams on earth are hydro electric power generating dams....
This is the first new solution for hydro-power I've seen in years. No moving parts (meaning nothing under the water surface that if there's algae or barnacle growth the bearings will seize up.)
I can see using a larger one on a sail boat, or having a set of impellers. You could have different impeller sizes depending on the wind. The thing about sail boats is they have a fairly narrow speed range, so 10-11 knot winds you're going 5-6 knots, drag something in the water and lose a knot, At 12-14 knot winds you're still going 5-6 knots but dragging an impeller does nothing(except generate power.) At 18-20 knot winds, maybe you're going 7-8 knots, your sails are reefed and an even bigger impeller, generating more power, still doesn't slow you down. The way sailors do this now is with a folding prop - that doesn't spin as well as a non-folding (but minus 1-2 knot) propeller or they use a completely separate device that drops in and out of the water.
Most hydro-generation mechanisms look like they'd soon be fouled. They're big and expensive, I always see the project announced, sometimes the device place in the water....and then.... nothing.
Генератор свободного потока. Это конструкция 1925-1935 годов, но она самая перспективная. Не нужно строить плотину. Большой респект вам!
the magic is; every time the stick comes loose, we make another sale >:-D
So, you really stick it to the customer, don't you.
My Dad told me about an estate which had a ships turbine in the South Esk river that generated electricity for all the workers' cottages. In the 1930's.
Some of the first automobiles were electric
@@Tolbat. Indeed. In New York they had little charging pumps (about the size of a petrol pump) all over the city.
I think Jay Leno's got one of the cars here on U-Tube.
I believe it but, it was the 1930's. What would they be plugging in? Lamps, maybe a radio?
@@870expressmag Good point. I never thought about that. It was free though which is always something; and there might have been energy to spare.
For all I know it could still be running: which I'm sad to say is not the case for the old Man, so I can't ask him.
@@cozmcwillie7897 I agree with you , there would probably be plenty of energy to spare back then.
I'm from Africa. People would steal this from the riverbank along with the stick it's on in rural communities.
I would steal and destroy it. It is plastic pollution.
@@insectbite1714 Such a first world country reply.
xD
that´s so real, funny and sad at the same time xD
@@serciserc no it is plastic so it will escape the river and go into the ocean.
Now you just need a portable source of flowing water to complete the kit!
the door is wide open for a risque humourous comment to that ....
What, too soon?
@@jameslow5536 No takers? I'm disappointed...
Nothing a bucket of water and 3x1 hole can't fix.
Creeks rivers and 55 gallon drums with pumps to keep water flowing the drums to keep the water flowing between BETWEEN the barrels
What a incredible ideas from these guys...! It certainly comes handy for the poor communities around the world. Love the ideas.
That defies logic
How many laptops and cell phones so you think poor communities actually have?¿? And of those how many are on a river or stream?¿?
This is a great idea for SOME individual people on earth but on this scale completely useless to a community
Wonder how many will drift away never to be seen again
O man this is awesome I've never seen this before good idea.
Based on the two lithium batteries (2500mAh x2 x 3.7v) in the turbine pad, we are looking at around 20 watt-hour system... for $340?! I think solar power might be better.
But the idea of getting power from a tiny stream is a good one. Like they said mass production will drive down the price a ton. And many places don't get much sun, this will give you power when solarpanels don't work.
www.reuk.co.uk/OtherImages/hydropower-calculation-of-power.jpg
Think this one is smarter in such cases
Except water doesn't stop flowing at night ;)
so pair them both to your battery bank! I would love that free off grid power.
Doesn't africa have lots of sun and little water? compared to each other... lol
I had this same idea over 30 years ago while camping in the north Cascades next to the North Cascade river. I rough sketched it. Very very similar. Perfect for camping in the mountains of Washington State.
Works great in the Sahara desert as well.
Rice Man sammofoile lol
yeah, they have huge springs with clear water :D
Rice Man brings a Submarine to the Sahara Desert. Wonder's why it won't work.
Use the right tool stupid.
All you need is an unlimited flushing toilet.. magic
you would have better luck with a solar panel. I have both. Spend half my time by a creek and half in the desert.
the idea isn't new, but i'm very happy to see more and more companies pushing out clean energy products.
there are some youtube videos where people build water powered generator themselves, but no on this nice portable & small scale.
please don't compare it with solar/wind products, because this can run 24/7 day and night .
Cool! Just make sure you don't drop your phone in the river while setting this up.
Brilliant! God bless you. from Manila, Phillippines.
Brilliant idea!..Kind of similar to what private sea going sailing vessels use to generate power when sailing.
So it burns more fuel to drag it.
main power but can have it with thrusters, wind turbines would still be a better option
@@malicious1111 burns more wind?? It would create more drag on a sailboat but if you’re not competing in a race or have a rigid timetable, who cares if you’re a half knot slower, wind is free.
I feel bliss every time i see free energy.
Next time make a telescopic fishing pole with a battery in the handle. place handle between the rocks and your away.
It never cease to amaze me how people can invent and create amazing items this is just mind blowing
For the price, I'd go solar. Not everyone has a river in thier backyard, but the sun's everywhere.
Depends on the place. We here found micro hydro better than solar because most places with no electricity located high in the mountain and steep with jungle. We have 365 days of light but we are also a country of rain so cloud is a big problem. There are a lot of streams usable for this. We build several micro hydro for places here and it is helpfull. Altough there is no way 300 euros will suffice. We built a 1500 bucks unit plus minus to power light for a village.
Only daylight, river has a nonstop run
Not in the Netherlands
@@jeroen1235 wow river in every backyard thats waow
Not always sunny either
yeah Africa is where they need WATER!
Depends on the region. And they actually need *drinking* water.
It'd be handy for campers and boating cruisers. But that $340 price is absurd. Solar makes far more sense for most locations and won't go away in a drought. I wonder if they're shaking down charitable organizations working in Africa.
EVERYONE is shaking down charitible organizations in Africa. It's a business model
I'd buy it if I saw it at Walmart for $10
Find me a similar Solar product.
depends on were you live if you live in a place where streams are rare then yes
@Tommy Bangacuci haha no the price tag is based on cost to produce + cost to transport + labour costs + R&D costs + a bit more for safety net and for new projects
soo yeah there is alot more to the price then just cost to make
it costs like £100 to make a iphone max from that i remember
I'm german and it feels strange to her translating the own language in english
HI
I am looking for something like this a bit larger , off grid cabin and will link to a charge control .Needs to be completely submerged as temp will drop to -45c . Has to be run of river , no head pipe .
This is a great idea. I bought a Waterlily from Canada. It is a little larger and has a flywheel effect when spinning. Waterlily will work in water as well as wind. Well made.
could they be made for more power generation in various sizes and you could pick out the size you need
500 Watts? An entire village? That's about as much what my computer consumes when in full load....
Are you doing mining!!
500 watts is a good amount of energy/electricity. don't ridicule.
500
500x24 = 12kwh This a lot for a poor village.
But anyway, the products these people offer are a joke.
With solar pannels you can do better and cheaper...
@@yutuniopati 500 watts is not multiplied by 24 hours your calculations are not correct. the video meant 500 wh. So it is not enough. Unless they used many turbines in the same time it will change eveeything.
Журнал "юный техник" 1960х годов. Новое , это забытое старое.
Предлагаете жителям африканских деревень полистать журнал? Что ж, умно.
@@sailtogether3236 скоро самим потребуется)
If I attach this to the back of my boat, I will have unlimited energy!
Electroboom entered the chat😂😂
You'll turn petrol into electrical energy. Welcome to German innovation and efficiency!
It’s not expensive nor complicated to build very efficient Aqua Tech. I saw a video of washer converted Into a turbine connected to a converter that powered a house for 16 years.
Could you please share the link?
This device is so simple in its conception yet has the potential to solve so many energy problems in the most undeveloped places, for a vast number of people, while being environmentally safe.
This is nothing new, this technology has been used by sailboats for well over 20 years.
With those dimensions you can expect around 10 W of power. I also wonder how long does the propeller last in a fast-flow stream which usually carry a lot of debris.
not very long
i agree with you .....
the idea is nice .! very clever
and i believe as electrical engineer that the power of the tides ( just one example) is huge and there to be used, but mechanical issues and durability is a main big concern here. If the purpose of this is just for emergencies it is pretty fine anyway .......
Also gonna be tough finding water on top of a mountain or on mount everest.
Dude if you're on Everest or any comparable mountains you have more important problems then finding fresh water for generating hydro power....don't make stupid comments.....
10w? They said in the end that you would be able to charge your phone after an hour in the water. This is closer to 0w
You guys are onto something. Well done and keep up the great work 👍👍
if you left that for an hour in germany rivers it will charge your phones and laptops..
if you left it in the philippine river for an hour, in just 5 mins, it'll be stolen.. 😂😂
And if you left it a Japanese river it would be polished and free of debris. ⚘👍🏼 I left my backpack on packed a city bus in Kyoto and when it was returned to me in Germany with everything still there. Blew my mind!
Ehm, is that supposed to be funny
Wrong. Will get stolen in Germany as well. Only Japan polishes :D
Wait for china 🇨🇳😂😂
I m disappointed for a racist opinion on very positive invention
Permanent magnet motor as a generator. 2 field magnets move the 3armature magnets. Add 12v120v ac inverters and transformers to 240v you have a full scale Power plants. 28.8 kw
I love how they say "we want to provide this or that for xx group of people" oh yes, and also generate significant money for our pockets.. that too. ( nothing wrong with that at all, I just think it's funny how they refuse to say that making large sums of money is also a major design goal.. lol)
Making something Green and Healthy is an awesome selling point for Hipsters. The real target of these weird inventions like this, the electric cars and so on.
without money motivation people won't do anything good
Why don’t we hear more about this?
“Immense power”
Great job! I'm moving down by the river tomorrow.
Thats so awesome. Would love to have one of those. I am in to renewable energy. Have just installed solar on my house. Greetings from Andreas on Off Grid Sweden
It is a very good item and I am happy that they are helping people.
These are the Godly type of Person's that deserve respect.
God bless them. In Christ I pray. PEACE.
This is a great example of what's wrong with the German innovation system: the procedure, paperwork, taxes, and all the ridiculous expenses, make the final product SO expensive that it doesn't make sense eventually from the consumer perspective.
300EURO?! Seriously?... it should be 100 Euros MAX.
At least it will work for a long time..
Even 100€ is too much for a little ring of plastic and a "usb" cable. 50€ would be ok
Give this video to someone in Shenzhen, they will produce at $5 per unit.
Anything more than 30 euro is too much as folding solar panel and a battery bank for just 30 euro combined is better and more portable and more practical than this clever product.
Ok that looks like good execution. Actually convenient to use in the middle of nowhere.
Ahhh...now you can charge your cell phone in the shower every morning!
Seen this twice now great idea simple and effective.
WOW, $340 that's a lot!
3d print your own.
Excessive share. Easily copiable
They received requests from Africa and India they say. Probably the Nigerian Prince and the Windows tech support scammers made those requests.
We NEED much more of this kind of invention..
Why transfer the mechanical energy up to be converted with a horrendous loss in one of those rotary cables when putting the generator in the end device would be more efficient and would be cooled too.
because the counter part of the rotor needs to be stiff
Because when it breaks you have to buy replacement.Simple
Morlanius because a generator takes up space causing much more drag. They've probably already tried that
But drag doesn't really matter.
Not in terms of efficiency, but due to the fact that you want to be able to find your device still there when you come back, and not at the end of the river, then drag can cause problems.
Brazil: Congratulations! It's wonderful ‼👍👏👏👏👏👏
Drag it behind my sailboat! Love it
Dougen or other sail related towables put out much more power...
How about a mini charger for rain downspout application.
That would slow it down, but it could be good for charging batteries in emergency situations.
For campers, nothing beats a foldable solar panel. Even on an overcast day a foldable solar panel which is meant to be a 40w panel will still produce enough power to charge your phone easily and even slowly charge up a laptop within around 3-4 hours and when you have proper sun a 40w solar panel can run a laptop without any loss to the internal laptop battery.
Clogged by branch in 10 minutes..
excellent. we need these type of technologies, and encourage many to argument these ideas.
so bigger version is capable of 500W enough to power the whole village? Zimbabwean village?
lol 500w enough for a whole village..... a village of ants and a couple of rats
Maybe they meant charging the phones of an entire village, not power the village!
What do you mean Zimbabwean village??
Idk what there basing that on, I’m presuming a water pump and maybe one Electric deivice?
I think it’s just at night when they all sit under the 500w halogen flood light and catch moths for dinner.
I love the idea and i hope will be available around the world thx you so much for improving life.
A small float or pontoons (inflatable) and rudder would hold it in place.
At this scale, is no one gonna complain how a large dam would be more efficient & economical? ;)
Думаю в одной (державе) это расценят статьёй ПОЛЬЗОВАНИЕ ПРИРОДНЫМИ РЕСУРСАМИ . А так идея отличная 👍
Four YEARS later Y T recommends this to me.
This is nothing new, this technology has been used by sailboats for well over 20 years.
I built one of these years ago with less than $5, I still think mine is better lol.
But is it called blue freedom?
Do you have a link for your build ?
List of build parts.
Awesome.can't wait to see it's durability.
300 Euros, ? OUCH,! it's Plastic.!! Blue Freedom cost more than the cell phone it charges...
Nice Idea, but, there's not a lot of Freedom there..
The price gives me the "Blues"
There is another product similar to this, Tho it's taking it's long time to even get info if it's coming to mass market. but it's called 'estream' and it's roughly 200$.
Bluefreedom was from a kick starter also. So the unit is still roughly new, like it's mentioned in the video. So when more come out. the price will drop.
This is the only portable hydro generator out there currently. So first of it's kind things are gonna be pricey.
One day this gadget could be essential for every traveler.....i would only suggest that make it ideal for water as well as air.....
These ain't new, they've been around for years and years, I think it was tesla who came up with the idea for generating unlimited free energy, I think it is called the tesla hydro turbine
your post "ain't new" either.
Tesla Hydro Turbine was designet to collect energy from strong waterstreams. In rivers it wont work properly.
why cant you make it a bit bigger and pair up with a battery. come one.
Looks to be about the right size for survivorman type adventures in the backcountry. What is the cost going to run for the average joe ?
300 euro ~ $340
water lily turbine has the same concept.. cheaper..
I just checked them out, thanks for the tip. $120 for the water lily and you can use it as an air turbine too. I'm getting one for sure.
Herb.....why not get 2 ,one for you and one for me ...I'll save a bundle.
Best deal I have ever read.. someone should copyright this love story.
300 euros per unit? The PCB in it costs about 20 cents, the plastic shell is uneeded, and the alternator is probably $1. This is a $2 product. Where the remaining $298 EU comes from I cannot tell you.
How many knots does it need? I'm living on a sailboat and was thinking it would be brilliant to throw out, and just collect electricity as you are sailing.
Here is a kickerstarter portable water turbine. Exactly what you are looking for.
www.kickstarter.com/projects/hyerinster/estream-a-portable-water-power-generator-fits-into
@@yodastealth what a scammmmnn.
Brilliant idea 👌. Employing their intelligence to help humanity. Better than making war machine.
Great idea but ridiculously expensive, why not make use of the toilet flush to recover the energy lol
Love my crank generator, don't even need to get close a river.
Actually that's not a bad idea if you ran it on the tank side
Of course I won't run it on the dirt side !!
hahahaha
Why? Don't like the name Brown Freedom?
Great work.remember crocs are curios hungry fellows
You're paying for the idea. Any half-witted DIYer can piece one of these together with salvage. Sure, it won't like pretty but it'll cost at most $40. The price is insane
I was going to say the exact same thing. I have the parts to make this in my office right now. The problem is over development. You have to pay ever person that touches it...
so did YOU build one of the DIY for 40 bucks or is it still in your theory development file between Bull Z)(/t and internet fantasy claims.
I would love to see YOU do it for the 40 bucks but I don't believe it until I see YOUR working 40 dollar model demonstrated
To recharge I-phone, lap top or new sex-bot a solar panel probably would be far cheaper but take longer depending on how power hungry the sex-bot is and how often you turn turn turn it on and hold on for the ride.
There is no way you could build this for 40$. Labour allone would cost you more than 300$. Even on minimum wage.
I love the instantaneous hostility to the idea of someone making something for themselves. The circuitry for a solar charger is not really any different, and it's not that hard to coil some wire. O.o
There is no labour "cost" when you do it for yourself, only time and what you think your time is worth mine is 0$ when i do something i enjoy, components cost only something like 20-40$. For anyone skilled in electronics its easy to make.
500W to power a whole village?
i cant even power my caravan on a 500W inverter let alone my house or the whole street XD
03:33 That looks like a lot of maintenance!
I'm watching this using a hydro-powered powered phone charger.... wait my battery jus
I bet the power output is miniscule.
He said it can charge a cell phone after it runs for 1 hour, basically it charges it's lithium. batterypack which then charges your phone 3k-5000mAh is the energy capacity of a smart phone on average these days. So that means it produces 3-5Amps total current when in a good flowing river. That's probably at 4-5 volts but could be bigger voltage @ a lower current for the same amount of power transfer, just using a charge controller with voltage regulation on the circuit board
Your not going to run appliances of this one but they have larger units in progress it seems,,,
I want one so badly!!!
Only €299 ?!?!? What the f*ck?!?! - I spend that much for electricity for my household of 4 for 6 months. The thing is made out of plastic, I cant imagine it would last more that 3-4 years under daily constant use as the plastic will degrade over time due to thermal expansion.
Even if this would be made of molded aluminium or powder metal the seals would needed to be replaced every 2-3 years to ensure water tightness.
Again €299 ?!?!? and it will generate maybe €30 worth of electricity over it's lifetime.
TOTAL JOKE!!!
typical germans, evrything so much expensiv. they dont want to help poor countries and people, they want to their money all of the money. greedy germans, shame on them.
u gues in that turbine are 4 Lithium batteries +ba simplecircuit board + plastic cover + turbine, shpuld be all worth 20-30e euros. total scam, total greednes, typical germans
It isn't about the monetary value of the electricity it is generating, it is about generating electricity in situations where it is needed, but otherwise unavailable.
@@compasteedee turbulent (company name) has a system running in a comparably sized waterway to this one which generates 15 kw
a 1.5 kw turbine from them costs ~$1500 but will last for 15-20 years with simply hindering debris from blocking the intake
@@compasteedee thank you!
yea there is something that should produce elektrik power it schould be as light as possible and should not sink in water
aluminium perfekt its used for kables and its heavyer so you can carry more and the best thing it will sink like a stone perfekt 😂
by the way plastik can last extreamly long and that stuff needs to be produced and transported...
"It's a fish's play ground." lmao...Best argument rather it works efficiently or not. Yeah it's not very efficient, but it brings fish happiness!
Much too expensive for dark africa at 4000 rands get a solar panel !
solar panels dont work at night tho
MisterE how do you know rivers flow at night have you checked ?
And people piss and shit afaik all hours of the day.
But the battery it's charged during the day does work at night.
all the raw material that builds that thing from in that dark Africa weird? things have to be changed pretty soon.
Yes you can take it anywhere to charge your phone! Just add a fast moving stream... and stand there holding it, making sure it doesn't hit the bottom or some twig floats past and stops it spinning...
Africa has sunshine lots of sunshine. Its everywhere too. Streams are not everywhere....
I'd love to find out who these entrepreneurs are getting their funding from. I got a bridge in brooklyn to sell them.
That's innovation. It costs much because it's made in Germany, living cost is higher there as compared to China, India.
The price will drop because of scale ability but you are right about cost of living!!!
Be nice to add to a boat when on the go! Recharge house banks or charge small electronics such as laptops, tablets and phones!
Yes very expensive but a brilliant idea.
How about dropping these into sewage pipes? RIvers are hard to come by in cities.
Brown Freedom doesn't have the same ring to it.
Years ago most cities were built next to waterways, can you guess why?
EagleSlightlyBetter For one, a target velocity is designed for in sewer lines.
EagleSlightlyBetter a roof downspout would be a better idea.
The debris would stop it very soon and quickly i would imagine.
You have natural resources that are untapped this video I just sent you show you how to build one is to show you the capabilities of having one solar panels on solar lights can be generated from that you can have enough power to supply your whole village with constant energy if you manage the natural resources of the stream you have, and the flooding in it will occur the right way.
I don't see it giving a significant amount of power out. It's just a kid's toy.
At 20 Euros maybe...
Depends on the battery.
The limiting factor of how many kwh it can create in a day is the rate at which the generator can recharge the battery, not the particular battery's size.
@@Shockguey o
I think its a start. I was into computers at the start and many of my friends thought they had little future or were only for super smart people or nerds. They all have them now and have for years.
All good so long as you have a good source of flowing water. :)
$340 when the turbine with voltage regulator can be bought at less than $10 with free shiping. So you pay more than $330 for the plastic enclosure and cabling? These are not german enginners, they are simple scammers!
typical germans, evrything so much expensiv.
they dont want to help poor countries and people, they want to their money all of the money. greedy germans, shame on u
It won't work very well either. It looks like something you'd buy in Walmart because it's very cheaply made.
Also, imagine if everyone in the village had one and were all trying to put theirs in the stream! They would get tangled. I noticed how they showed it working in the middle of a stream maybe 18 inches deep! Not floating at the top or sinking to the bottom. That reeks of trickery to me.
@@tarstarkusz it has to be submerged to work efficiently.
There is some quick video which shows the turbine in what appears to be about 1/2 way between the surface and the bed. That turbine is not going to want to sit there. It is going to want to either float or sink to the bottom.
Then build a cheaper one and start selling it.
Laos ( 2010) has a small metal one that cost £30, weighs 15kg , that generates mains voltage , put a few stones in the stream to funnel the water & a bit of flex & you can get the TV to to run
So many negative people on here. I don't understand that. This seems like a viable concept that down the road could be hugely beneficial to people in remote areas currently (unintended pun) dependant on fossil fuels for electricity . Why not be positive?
Because they are stupid and short sighted.
wmg111 because its a trash product for an expensive price, it take ages just to get the $ worth of electricity to pay off the product itself.
Wow ~ 대단한 아이디어!🇰🇷💕👍
Wow~ What a great idea!🇰🇷💕👍
... there is a drought coming tomorrow. :)
Would love to see a larger version of this for towing behind a sailboat as an alternate charging source to wind at night. :)
Over engineered over priced 😏
Correct me if I’m wrong but, isn’t it just a motor shaft connected to a wire connected to a propeller? Of course their is the battery and circuit board but those don’t cost much at all to make. That thing is worth probably $120-$180 at most