Sharing a review about Special size 880*440mm 50W 12V flexible solar panels for VW volkswagen T4 camping van, Lensun Solar
Thanks very much for Karti to sharing his review about #Lensun special customizing 50W 12V 880*440mm flexible solar panel on the forum www.t4forum.de . #Lensun #solar energy will make the solar panel for you request, size, solar cells, junction box location, cables etc.
Here is the link about the original reviews on VW T4 forum. You can have a look in the following, Thanks.
Thanks very much for Karti to sharing his review about #Lensun special customizing 50W 12V 880*440mm flexible solar panel on the forum www.t4forum.de . #Lensun #solar energy will make the solar panel for you request, size, solar cells, junction box location, cables etc.
Here is the link about the original reviews on VW T4 forum. You can have a look in the following, Thanks.
Hi,
I have a few years ago bought a module at #Lensunsolar, which fits into the narrow bow on the roof. Now I have upgraded a bit the systems in the car and was looking for a second panel to expand the one on the roof. First I tried it with the now frequently encountered modules with jaw contact.
Here I had a 100W and two 60W modules, which unfortunately all did not qualify for an extension in question. Why? These new modules generate less voltage at the same lighting conditions (up to 3V under load, see here ). When connected in parallel, the weaker module determines the voltage of the entire system,so the solar controller switches faster off in difficult light conditions such as in winter or in the shade. I did not, so I have this returned.
Then I searched and asked #Lensun, where I bought my old module, if there is the possibility to get back narrow 440 mm modules with 50W. They wrote me that this specially on request could be made, and now even some panels were produced for stock, since there were several requests for the narrow modules by people driving a VW T4. The panels are manufactured in China and shipped from UK. Mine even came across a German warehouse. Because of UK or DE there are no problems with taxes. The payment goes through Paypal without problems. I would like to show my experience and the assembly.
First of all the packaging: the module arrived safely in three cartons, a luxury I did not have in the other modules (see linked thread above).
Test: A test with the multimeter showed the same voltage behavior as my old module in the sun and in the shade. Flat on the floor I had the late afternoon in the sun.
Voc: 20,7V
Ioc: 1.35 A.
In the shadow
Voc: 19,3V
Ioc: 0.38 A.
Installation: The module can be stuck in a narrow bow on the roof. If I had to remove it in the future, I decided to be glued to paint protection film.
Now here is the tricky part: The film on the back had to be removed. This is quite a laborious task, since it is very thin. The easiest way is by dissolving first one side completely and then subtracting the film from the surface. I have cleaned the back of the module with acetone and the paint protection film with water. As glue I opted for MS Polymer. The back of the module I have coated with the glue and then the whole panel can be placed on the roof.
The module I then complained and the edges again traced with MS polymer, so that no water can penetrate under the panel. Then I leave the bus for 24 hours. After about a day, the MS polymer is by the edges sufficiently to keep the solar panel on the roof. However, the whole setting process takes much longer until the final strength is reached.
Electrical: The cable will be guided through a cable duct to the rear and then through the rubber of the wiring lines for the back screen wiper. In addition I have drilled through the gum, the cable pulled through and the whole then is sealed with MS polymer. This keeps so super tight for several years. The #solar panel comes with MC4 connectors. This I have not used because they were too big for a cable duct on the roof. Here I have cut off the plug and the cable is crimped and insulated with heat shrink tubing. This I put in the cable channel, and connected my both in parallel now. A quick test brought 2.8 A short-circuit current in the late afternoon, so I’m satisfied.
All in all, in my view, the 50 W modules with dimensions of 440 * 880 are the best way to invisible install panels on the roof, as they also fit into the narrow bow. Anyone interested in the module, contact Abby of #Lensunsolar under: [email protected] or [email protected]
If any question, You can contact us via email or call us in the following information from Monday to Friday.
Contact information
www.lensunsolar.com
Tel: US +1 720-608-1288
China: +86 15759769602
Whatsapp: +86 15759769602
Skype: lensunsolar
Email: [email protected], [email protected]