|Item Weight||3 pounds|
|Product Dimensions||14 x 13.2 x 0.5 inches|
|Item model number||GP-SF-5|
|Manufacturer Part Number||GP-SF-5|
Go Power! GP-SF-5 SUNfilm 5 Watt Solar Panel
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- Harness the power of the sun to charge your 12 Volt batteries with 5 Watts of charge
- Completely silent green energy
- Comes with a variety of connections to hook up to many types of 12 Volt batteries
- Trickle charge cars, trucks, motorcycles, snowmobiles, ATV's, personal watercraft and more
- Keep your batteries topped up when they are left idle
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This item Go Power! GP-SF-5 SUNfilm 5 Watt Solar Panel
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|Item Dimensions||13.25 x 14 x 0.5 in||0.8 x 12.44 x 12.44 in||0.6 x 15.3 x 15.3 in||13.58 x 14.41 x 0.51 in||1.5 x 18 x 14.5 in||6 x 19 x 1.25 in|
The SUNfilm 5 Watt solar panel is designed to use free solar energy from the sun to keep your vehicle's battery topped up. The SUNfilm 5 delivers up to 260mA to your 12 Volt batteries. Great for use on cars, trucks, motorcycles, snowmobiles, ATV's, personal watercraft or any appication where a battery will sit idle. Most batteries will self discharge over time which diminishes the overall battery life. If you keep your batteries topped up all the time you can drastically increase your battery life. It comes with multiple connections so you can use it to charge cell phones, laptops, vehicle batteries, trolling motors and the list goes on. It is the ultimate choice for portable solar charging.
Top customer reviews
I decided to give this a try as a temporary fix as I don't have time to take my car in due to the work schedule.
I was hoping for something that would keep a charged battery topped off, but I plugged it into the cigarette lighter and stuck the panel on the dashboard and found the same cloudy day my battery actually got a bit of charged back from completely dead. Two days later the engine tried to turn, and it's now charged to the point of being able to start in the winter on day three. Remarkable.
I was hoping for something to prolong the charge a bit until I could take the car in, and I have a relatively small panel that is charging a battery from dead.
Great price as well. Definitely recommended.
Out of the box the packaging is fine. Mine was a bit messy and looked like it might have been used/returned but it works so I don't care.
In most respects it is identical to the Sunforce but there are differences.
1) the Sunforce is quite a bit heavier. The casing is thicker and it weighs about twice as much. Does this mean one is tougher than the other? Not sure but it's worth noting that there is a noticeable difference. Both are behind windshields so I'm not worried about it.
2) the Go-Power has the same alligator clips and male cig lighter plug as the Sunforce BUT they toss in a little LED to prove the panel is still producing power. I use a volt meter so I don't need the LED but hey...it's there if you need it. BTW, the LED will also work for the Sunforce and any others that use the standard quick disconnects.
3) the Go-Power also includes a quick disconnect that ends in bare wires (they are cut off but not exposed). I don't need that for something that only produces 5 watts but I'll take it as I use those for all kinds of crazy projects with my large panels and trickle chargers.
Probably the most noticeable difference is the output. I laid the Go-Power and Sunforce side by side in the driveway, flat on the ground. Sun was heading down but still bright out so not the BEST situation for power but my goal was to compare the panels against each other.
Using my volt meter, the Sunforce put out 19.4 volts and the Go-Power 20.5. In case it had something to do with which one was on the left or right...I switched places and the same result. The Go-Power put out slightly more juice.
I'm not saying that if I tried another Sunforce it wouldn't be 21 volts...just saying of the two I have, those are the readings I got.
I've been using my Sunforce for a few months in my rarely-driven passenger van and it's done a great job. The Go-Power is going into my s-10 blazer that also rarely gets out of the driveway. I'm expecting the same positive results.
This solar panel is better, and cheaper, than the Harbor Freight el-cheapo model that was not designed to be exposed to the elements.
That taken into account, you're just comparing products now.
This unit is light and thin (maybe .5 inches thick), with black plastic for the bezel and backing. As a result, I found that it doesn't stand up to the sun too well. Obviously that's a bit of a problem for a solar device. I put it in the windshield of my parked truck for 2 days in Phoenix (summer), and the bezel melted significantly. The panel still worked, so I modified it.
I used super-high-temp glue to affix strips of reflective insulation to the front and back, then sealed the seams with foil tape. Back in the window, and no problems since.
The panel itself comes with an assortment of connectors, the most useful being the cigarette-lighter adapter. You can test the panel's operation using the LED connector, but you can't use two at once, so you need a multi-meter to determine if other accessories are functioning.
In full unrestricted sunlight, I've found that it puts out 16.5 - 17.2 volts. In my windshield, it still gets enough to counteract the parasitic loss of a hot, idle day in the desert. So it's doing its job, albeit after I beefed it up for the task.
I'd buy this again, but I think any of these mini-panels probably need the customizations I made for longevity's sake.