Fair price, and nicely made. It is hard to find a folding panel like this, and I would buy two more if I could afford them.
Buy Nature Power 55020 18-Watt Folding Monocrystalline Solar Panel and Laptop Charger Now
I bought this because I live off the grid, and I need something charge my laptop. I was excited to use it and tried on a full-sun day to make sure I gave it the best chance possible. Nothing happened. My laptop was 'plugged in, not charging' the whole day. Off or on, I couldn't get the charger to give it any power, or even to hold it's charge from the energy coming off the charger. It was very disappointing!Last update,I contacted nature power and advised several factors which effects on out put power, in short, nature
power says that about 0.4A is still ok considering many many facts,(location on the earth, air mass etc).
That's logically true I think but then why my 20W solar panel makes more than its specification under this
Houston TX full sunlight. If the advice it true, nature power solar panel is really useless.
I guess internal wire and 12ft wire are too thin or maybe my unit had defects.
I returned and go refund and spent for bigger solid flame panel. no more folding panel.
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UP date,
First It's looking nice and I liked it. I tested Isc (short circuit current) it made only 0.39A after all.
On the other hand, my other 12V,7.5W monocrystalline makes Isc 0.6A under the same sun light condition.
Contacted nature power and advised several points and Isc should be around 1.2A but anyway it makes only
Isc 0.4A and he also started wondering about it. I suspect wiring are too thin for 12ft.
Anyway, it didn't work as advertised and I returned it. I was expected very much on this product so I am
quite upset.
If you want to try this product,ask other users for Isc, it should be 1.2A or at least 1 A.
I guess maybe this product won't work as it is advertised because if some internal wiring were wrong,
I would be able to find it by grabbing connections. I tried it but nothing was changed.so maybe that
how it is made.
I'd like to ask other users for Isc. If this my one was the only bad unit, I'd like to have a good one, but
I totally lost the trust on this kind of product, folding type solar panels.
The seller, first replied me 'We do not accept any open item return' but I told the reason and
they accepted the return.
The return item must be received by them within 30days from delivery to you, be careful about it.
I am waiting refund now.
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I got is a few day days ago and I am trying to figure out its property.
It looks well made but there's only 2 hook up holes as it is shown on picture.
First I didn't care about it but it is actually hard to use, it should have those holes
at least 4 or 6.
Wiring is too thin to have spec 18W and 12 feet wiring from the panel is good
length for doing anything, but again wiring is too thin for 1 A.(18W) panel.
April 21,2013 Houston TX, it is a gorgeous day, really full sun light.
This panel, at the connector of 12feet cable from the panel, gives only
Open circuit voltage, 19.8V and Short circuit amp 0.34A.
Depends on the panel angle, it changes to 0.31-0.39A but never hit even 0.4A.
It is 18W panel means so that it sould give at least 1A at 18V.
I put in a fridge for a while to let it cool down, and tested again, then voltage
hit Voc20.2V and Isc 0.42A,
My another panel which is actually 7.5W, 12V monocrystalline and a half size of this
Nature power 18W panel, is actually makes Voc15.6V and Isc 0.55A.
I doubut the Nature power 18W is something wrong.
If the panel spec is really 18W panel, the cause making such reduction of current
is I guess only such thin wiring. I can't see internal wiring which connecting panel
to panel but I can touch and feel it is also quite thin.
I'll ask customer support for suspicious cause and may try replacing or return to amazon.
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