High Power Sun Capture panels

[Electro-Fox]

Hi guys...
This company claims that their solar panels can charge a battery directly. Any battery...any voltage. Have any of you seen this?
http://www.hi-powercycles.com/portable-solar-chargers-1/

Not cheap, but they are light. I am no expert but wouldn't his be an efficient system?

EF

 

[ohzee]

When you go to that page and select the solar cell type it then prompts you for which converter you want in different voltages including custom.

So it's not like you can take the output from the solar cells and tie it directly to the battery. You need something in between for your specific voltage.

 

[Electro-Fox]

When you go to that page and select the solar cell type it then prompts you for which converter you want in different voltages including custom.

So it's not like you can take the output from the solar cells and tie it directly to the battery. You need something in between for your specific voltage.

Yeah I think I worded my first post poorly. They are very expensive...but this is an efficient way to do it though...right?

 

[Electro-Fox]

They supposedly use Sunpower cells, which are top efficiency cells of this type.
"Combined with our proprietary solar charger..." which could be worth $10 or $250.
The price is 3X higher than it could be.

True...is there any other systems like this?

 

[dogman dan]

I have seen similar setups cheaper. For example. https://www.aliexpress.com/item/100W-Solar-Panel-Monocrystalline-Taiwan-Solar-Cell-Folding-Solar-Fabric-Charger-Bag-Portable-Solar-Panels-for/32597702650.html?spm=2114.01020208.3.148.9Fjlnw&ws_ab_test=searchweb0_0,searchweb201602_3_10065_10068_10084_10083_10080_10082_10081_10060_10061_10062_10056_10055_10054_10059_10099_10078_10079_426_10073_10103_10102_10096_10052_10050_10051,searchweb201603_1&btsid=cc8497ff-b5c6-45ca-a63e-7ef9e6f04023

As for charges any battery, of course they can arrange the panels to put out whatever voltage they want, and make it as big, as many watts, as you can afford.

I was just this week seriously looking at what a 200w in 12v size, 48v setup would cost. Best I could find was about $350-400 for 4 12v 50w panels. The math gets a bit confusing, but this would still put out potentially 200w max, (watts is watts) but strung in series, the output would be about 3 amps of "48v". Size about 22" by 88". I was looking at panels like these but more square vs rectangular.
http://www.ebay.com/itm/2pcs-x-50W-Solar-Photovoltaic-Panel-100W-semi-flexible-Poly-silicon-panels-12V/282092137372?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3Dec7666a6fb2f40d1bd8e5403b24f4e00%26pid%3D100338%26rk%3D12%26rkt%3D30%26sd%3D351856876150
48v charge controller would be great, but I was thinking just ride enough to have partially drained battery, then connect direct. Pack voltage charged 58v. Output of the panels anything from 48v to 72v depending on the sun strength. A voltage converter or charge controller to 58v would be best, but if you are pulling 500w and generating 200w, you won't overcharge.

The use I had in mind, I'd generate at best 1600wh a day, and be using 3000 per day, so again, like that, can't possibly overcharge a huge battery with not enough wh to do it.

 

[Electro-Fox]

Dogman Dan
What if you don't need them to fold? If a person was looking for the highest efficiency panel, ridged but not a home unit. Again...I don't know if I am explaining myself right. I am thinking a cargo bike, with the panels stacked on the back and hinged to fold out to charge. I would want the most efficient panels I could get. Solar city and Sun Power seem to be the best. https://www.greentechmedia.com/articles/read/Worlds-Most-Efficient-Rooftop-Solar-Panel-Revisited
I just need to find a source for sizing as it seems that they only do homes? I may be wrong on that too. I don't know...but they may be very heavy too, as I have yet to find that out. Then I would need someone to make a converter to make the panels... I am just beginning my research...thanks for the post.

EF

 

[dogman dan]

I'm nowhere near expert enough to know which brand panels to buy.

I was looking at 4 50w flexible panels, each roughly 2 foot square. Then I could wire to have them put out 3w of 48v. The cargo trailer has a top 28"x 8 ' long. So I can fit about 200w of that type panel. Each one is about 3-4 pounds, so not over 16 pounds of weight. 200w of regular panels is more like 40-50 pounds, so the light flexy type is what you need to carry them around.

This same type panel could of course, pack down into a 2 foot square package. Not bad, but not small enough to fit in a laptop bag like the other ones.

4 of those 70w foldable units would be cool, 280 w total. That would run you a pretty stiff $1200.

The flexy panels made for rv's and boats tend to come in 40 or 50w, and 100w. Or very small, like to charge a laptop. 4 of the 100w panels would be badass for a stationary charge, that still folded to 2'x4'.

It's just all pricy,, I'm kind of back to looking at quieter 800-1000w generators, for around $400.