Building a Budget Solar Shed Setup with Harbor Freight Gear
The video documents a real experiment in powering a working shed using budget solar equipment sourced entirely from Harbor Freight. The creator assembles a complete system with just two main components—a 100-watt Thunderbolt solar panel and a 350-watt Predator power station—for a total of $400. The shed already had functional uses (charging tool batteries, running lights, fans, and speakers), so the goal was to make it self-sustaining without having to haul the power station indoors to recharge every few days.
This setup appeals most to van lifers, off-grid campers, and anyone maintaining outbuildings or remote work spaces who want hands-on experience with solar before investing in larger systems. The approach sidesteps the traditional four-component solar build (panel, battery, inverter, charge controller) by choosing an all-in-one power station that handles battery storage, AC outlets, and built-in charging control in one unit.
Key Moments
Key Moments and Results from the Solar Installation
- The solar panel arrives with basic build quality but marked as designed for long-term outdoor durability, though it lacks mounting hardware and comes with only one cable type and adapter.
- Direct connection to the power station works immediately, delivering 47 watts initially and climbing to 65–78 watts once the panel is angled toward the sun—close to the 78 watts the station draws when charged from a wall outlet.
- An attempt to integrate a cheap external charge controller ($17.99) fails; after 20–30 minutes of initialization, it produces zero watts and conflicts with the power station's internal controller.
- The panel is mounted on a firewood cover with a waterproofed wire passage, eventually providing stable 77–78-watt input while the shed simultaneously runs a light (12+ watts), fan (72 watts), and charges dead tool batteries.
- With mixed loads running, the system shows 35 hours until battery empty—enough buffer since the creator rarely spends more than a few hours in the shed at a time.
- Final time-to-empty estimates rise and fall as load changes, demonstrating real-world behavior of a solar-backed power station under variable demand.
What You Should Know Before Attempting This Setup
- Mounting hardware is not included—the panel ships with temporary stands suitable only for ground placement; roof or permanent installation requires separate brackets you must source and install yourself.
- Cable compatibility matters—the panel comes with a J-plug adapter that fits the power station's Anderson input perfectly, but connecting to external charge controllers requires rewiring and splicing, which assumes comfort with stripping and joining wires.
- External controllers may not work alongside built-in ones—the video showed that adding a separate charge controller to the power station resulted in zero watts of charging, so you should rely on the power station's internal protection rather than stacking controllers.
- Panel durability is uncertain—the creator expressed concern that hail or extreme weather could damage the lightweight panel, despite it being advertised for outdoor long-term use; treat it as a low-cost experiment rather than a guaranteed decades-long solution.
- Wire waterproofing is essential—any penetration through shed walls or covers needs silicone sealant to prevent moisture and pest entry; the video used Loctite clear silicone as a working example.
- Power output varies significantly with time of day and angle—expect 20 watts at suboptimal angles and 47+ watts at poor positioning, climbing to 77–78 watts when correctly aimed at the sun; plan loads accordingly.
- Always consult local electrical code and a licensed electrician—the creator emphasized this is for educational purposes; your jurisdiction may require permits, inspections, or professional installation.
Common Questions About This Harbor Freight Solar Build
Is a $400 Harbor Freight solar setup actually reliable for daily use?
The video shows it working well for a lightly used shed with intermittent loads like lights, fans, and tool charging. The real test is longevity; the creator acknowledged uncertainty about how well the panel will hold up to hail and weather, so treat it as a low-risk experiment rather than a permanent solution. Long-term durability remains unproven.
Can you skip the external charge controller and just use the power station alone?
Yes. The video concluded that the power station's built-in controller is sufficient and that adding an external controller actually caused problems—the system locked up and delivered zero watts. Keep it simple: panel to power station, and let the station's internal protection do its job.
How much power will I actually get on a cloudy day or in winter?
The video doesn't test cloudy or winter conditions, so real-world output at lower sun angles or reduced daylight is unknown. Based on the testing shown, expect roughly 47–78 watts at good angles on a clear day; assume significantly less in poor conditions and plan your loads with that buffer in mind.
What happens if the power station overcharges or the panel overheats?
The power station's internal charge controller is designed to prevent overcharging, and the panel includes built-in protection. The creator tested this by running AC loads while charging; the system automatically managed the power flow. However, for peace of mind, an external controller should theoretically help—though the video showed it doesn't integrate well with this model.
Do I need mounting hardware, or can I leave the panel on the ground?
The panel ships with temporary stands for ground or tilted placement only. For permanent installation on a roof or wall, you must buy separate brackets. The video mounted the panel on a firewood cover as a workaround, which is a temporary solution until you source proper hardware or commit to a permanent location.
- Thunderbolt 100 Watt Solar Panel (Harbor Freight)
- Predator 350 Watt Power Station (Harbor Freight)
- Synergy Wonderer Charge Controller
- Charge controller
- A device that regulates power flow from a solar panel to a battery to prevent overcharging and damage.
- Anderson connector
- A two-pin power connector that allows quick plug-and-play connections between solar panels, batteries, and power stations.
- Inverter
- A device that converts direct current (DC) power from a battery into alternating current (AC) power usable by standard electrical outlets and appliances.
- Power station
- A portable battery unit with built-in AC outlets, USB ports, and often an integrated charger and charge controller.
- Solar panel
- A device made of photovoltaic cells that converts sunlight directly into electrical power.
Key Terms
Sources: Charge controller · Anderson connector · Inverter · Power station · Solar panel — definitions cross-referenced with Wikipedia
Video by Watt's Next? on YouTube. If you enjoyed it, please subscribe to their channel and show your support for the great video.
Description
Let's power this whole shed using only $400 worth of Harbor Freight solar gear! Including their 100 watt solar panel and their 350 watt predator power station. Thanks for watching!
Important: I am not a licensed electrician or solar installer. This video is for entertainment and educational purposes only. Always check your local laws, utility rules, electrical code requirements, and hire a qualified electrician before attempting anything like this.
FTC Disclosure Statement:
Every video includes paid promotion or sponsorship (such as free products for review). Some links on this YouTube channel may be affiliate links. I may get paid if you buy something or take an action after clicking one of these.
Disclaimer:
Watt’s Next? cannot guarantee against improper use or unauthorized modifications of this information. Watt’s Next? assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Watt’s Next? recommends safe practices when working on machines and or with tools seen or implied in this video. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Watt’s Next? Please consult a licensed electrician before attempting anything seen in this video. Viewers are responsible for ensuring compliance with all local laws, codes, and safety practices.
Video transcript for “I tried Harbor Freight’s cheapest solar panel setup” Accessibility
A full written transcript of this video, provided for accessibility. Select any timestamp to jump the video to that moment.
Today I'm going to be powering this shed with solar and I'm going to do it using this Thunderbolt solar 100 W panel from Harbor Freight. Usually when people set up solar on sheds like this, they have four components. They have the panel, they have a battery, an inverter, and a charge controller. I'm going to do
things a little bit differently with mine. Rather than having to buy all four of those components, I'm really only going to need two, and they're both from Harbor Freight. In addition to the 100 watt panel, I'm also going to be using this 350 watt Predator power station. This power station comes in at
$279. What's cool about this power station is that it's going to serve the same functions as a battery, an inverter, and a controller. It is, after all, essentially just a big battery, but it also has your AC voltage ports here that you can plug anything into, and it's got a built-in controller, so it
doesn't overcharge. Now, out of curiosity's sake, I do also want to try running an actual external controller. So, I've got this cheap synergy wonderer that I picked up on Amazon for $17.99. And so, I'm going to try to get this to work with the power station just as a a sort of safety net cuz that power
station is pretty expensive after all. I really don't want it to overcharge and get ruined. So, I'm going to see if we can get this to work. But, I think probably having an internal controller plus an external controller, they're not going to mesh together and something's not going to work. But we'll see. But
again, this is not really a necessity. So, if you exclude this, we've got a $120 solar panel and a $280 power station brings our build to a total of $400. If you've shopped around for solar equipment at all, you'll know that's a pretty good price. It's really not bad at all to outfit this entire shed.
[Music] I've been using this power station for quite a while now to charge my tool batteries, run some speakers, run a fan, and I've even installed a light in here just like that. But the issue is that every time this power station runs out of juice, I have to take it into my house and charge it. The idea behind
this solar setup is to have it automatically replenish with the sun, so I never even have to move it. So, without further ado, let's open up this panel and assemble everything and get this whole shed wired up. All right, here it is. The build quality seems all right. I mean, it's a
little flimsy, a little cheap looking. The reason I wanted to get this one over some of the other Harbor Freight panels is because it's supposed to be highly durable for long-term outdoor use and virtually maintenance-free. A lot of the other panels at Harbor Freight were advertised more of a temporary use, like
if you're going camping and you just need to charge something for a day or two, but that's not what I wanted for this. I wanted something to stay up on the roof of my shed for years and I never have to touch it. I don't know if that's how this is going to go. I kind of feel like first hail storm, this
thing's going to get dinged up pretty bad. The instruction manual says do not install when tired or under the influence of drugs. So, I'm not quite sure what to do about that. One thing that's a little disappointing is that the panel does not come with any mounting hardware. Like I said, I was planning on
mounting it to the roof of my shed, but it doesn't come with anything to do that. All it has is these stands, which is really just meant for more temporary use, like if you're just sitting it outside in your yard. And so, I guess I'll just have to sit it out there for now and then mount it on the roof later.
I'm also a little disappointed with the amount of connections. I thought maybe it would come with a couple of alternate cables to choose from or connector types. Uh, but you just get this one cable. It does have an adapter on it though. So, out of the box, it comes like this with this J plug on the end.
You can actually unhook this. This is just an adapter for an Anderson connection, which is great because the Predator power station comes with an Anderson input right here on the back. So, it's cool that you can just plug and play right into the power station. But if we take a look at the charge
controller, you'll see there's no sort of Anderson input. So, we're going to have to tinker with this cable a little bit to get it to work with the charge controller. But first, let's just try plugging it straight into the power station just to check and make sure it even works. All right, here's my
temporary setup. Let me plug in the panel to the power station and see what we're cooking with. Going to plug her in right like this. All right, now the screen is kind of hard to see, but it's working. You see there, we're 82% charged. We've got 47 watts coming in. It's going to take
an hour and 7 minutes to charge completely. And this is a 100 W panel. So, ideally, we want to be getting more than this. The sun is coming from that way right now. So, let me angle it this way. And I'm also going to put out the feet like so. And drop it down. Perfect. All right. Now, you can see we're
getting 66 65 64 watts in 55 minutes to full. That's much better. Whenever I plug this power station into the wall in my house, I believe I get about 78 watts in. So, as long as I can get something close to that, I'll be happy. All right, look at that. We're up to 69 70 watts now. Let's go. Okay, so now comes the
question, how do I integrate the charge controller? So, what I'm going to need to do is remove the Anderson connection. If you see, I slide this down. Got the red wire and the black wire going straight in there. I'm just going to remove these. There's probably a better way to get the wires out of the
connector, but I'm just going to cut them because I am a Neanderthal and that's all I know how to do. I was trying to use one thing in this video that isn't from Harbor Freight, but these wire strippers are super dull. So, here's my Harbor Freight wire cutters. Boom. There we go. Now, we've
got to get a cable that goes from the controller to the power station. And luckily, the Predator Power Station actually came with a couple of different cables. And here's one of them. It came with one cable that had like a cigarette car, like a car cigarette lighter on one end and Anderson on the other. But I
thought I'd save that one just in case I'd ever need to charge this with my car. But this other cable on the other hand, it's got an Anderson on this end and these on the other end. This is the cable that I'm going to cut up and use. All right, I got these stripped. Now, don't ask me why because I am not an
expert on this kind of thing, but for some reason, you absolutely have to connect the battery to the controller before the panel. I've read this online and I was like, "Ah, that doesn't really seem that important." But I was just looking through the instruction manual for this controller. And within the
first three pages, it says that probably four or five times. You have to connect the battery before the panel. So, that's what I'm going to do. It also says to put in the positive first and then the negative for both the battery and the panel. I don't know if that really matters, but again, might as well do it
how the instruction manual says to do it. So that way if it doesn't work, I'll know that it's not because I did something wrong. Okay, the battery is connected. There's nothing on the screen on the controller yet. Let me connect the panel. All right, got the panel over here now. Let's go ahead and hook it up
to the controller. Okay, let's see if this somehow works. I'm afraid the external controller is not going to communicate with the internal controller. It's just not going to work. It's been initializing like this for probably 20 or 30 minutes now. And if you look at the screen on the power
station, it seems to recognize that there is a solar panel connected, but it's just getting zero watts. And it just kind of blinks on and off. Something's not working right. So, it looks like we're just gonna have to go straight from the panel to the power station. So, it's not ideal, but I think
it'll still be perfectly safe considering we do still have the the internal controller. Okay, I got the controller unhooked. Now, since I snipped both of these wires, I could just splice these together. That'll give me an even longer cord to play with. I don't have any heat shrink on hand right
now, so I'm just going to use some electrical tape. There we go. All right, I set the panel up facing south. And now we are getting 21 watts. Okay, now I've just got to position it how I want it. Okay, since I don't have any mounting hardware, I'm not going to put it on the roof for now. Instead, I think I'm going
to put it on this cover here that covers my firewood. I think that's perfect. Now I just need to drill a hole through for my wire to go through. And then I'm going to do some waterproofing around it. There we go. I had to do my undo my electrical tape splicing to get this through, but now that it's through, I
can redo that. So, here is what it looks like on the outside. And on the inside, I've got the wire coming through. I respliced it with the Anderson connector. Look at that. 77 watts. 78 watts. Yes. Let's go. Perfect. And turn on the AC
ports. Look at that. Now, as long as I'm out here running things, like for example, you see I've got 105 watts going out. That's because I'm charging all these batteries right now. A lot of them are dead. And so, obviously, as long as there's more watts going out than in, it's going to drain the
battery. But, I'm not out here that often. So once these batteries are all charged, as long as I'm not out here using the light or the speakers or something like that, then this battery is going to be charging that the next time I come out here, it'll be at 100%. So we're about neck and neck in watts
here. Um, but you see if I do something like turn on my light, that light uses a ton of power. So it switches from time to full to time to empty. If I wasn't charging with this thing, that would probably say like an hour. Since I've got some watts coming in, it'd increase the time to 2 and 1/2
hours. I never spend 2 and 1/2 hours out here, so that's plenty of time. I also have this little box fan that I run to help keep it cool in here. You see that bumped us up to 72 watts. And again, these batteries are still charging, so really not bad at all. You see, we currently have 35 hours to empty. I can
work with that for sure. So now the only thing left to do is to waterproof this hole. I don't want any moisture or bugs coming through that hole. So what I'm going to use is this Loctite clear silicone. It's waterproof and it dries in about 45 minutes. All right, there you have it.
There's my $400 Harbor Freight solar panel setup. I should have all the power I need in this shed for the foreseeable future. And to do it with really just two components and $400, it's hard to beat that. Let me know what you think about this setup. Is there anything I could do to improve it, change it? How
would you do it differently? Let me know in the comments. Maybe I'll try out some of your ideas. Thank you very much for watching and I'll see you in the next
How videos are chosen here
Every video on Helicopterstour.com is hand-picked and reviewed by Justin — nothing is added automatically. Each one gets an original written guide and an honest rating: ⭐ 1 out of 2 means a good video worth your time, and ⭐⭐ 2 out of 2 means a great one we would recommend to anyone. The videos belong to their creators — every page links back to the original channel so you can subscribe and support them.