Thanks for your replies!
First of all, after some searchs in google I didn't found a panel polycrystalline with the width and length capable of install in my van. The panels from germany websites are all of them monocrystalline, some examples:
www.fraron.de/es/a-85920741/
solarkontor.de/WATTSTUNDEZ-WS130SPS-DAYL...wer-Solarmodul-130Wp
I read some information about the diferences between them, being more efficiences the polycrystalline for Spain with a lot of sun and high temperature and monocrystalline for places like Germany with less sun and more colder.
After install my new ones batteries 100ah (x2) some questions remain in my head, How is this low efficiency possible? I mean, if we try to calculate the ah per device my calculations do not come out to match.
Some numbers (more or less)
Stationary heating:
30W / 12V x 3 hours of daily use = 7.5A
Fridge webasto:
0,86 Ah x 24 hours of daily use: 20.64A
Water pump:
48W / 12V x 1 hours of daily use: 4A
Leds, and phone no more than 2A
Total per day: 34,14
With two batteries 100ah, I should have enougth batteries for at least three days, is this correct? Because my van don't think the same.
Vendor information:
www.webasto-comfort.com/fileadmin/webast...gue-2021-2022-EN.pdf
tutiendacamper.com/compresor-fija/119-ne...gance-49l-1224v.html
Best regards!!!!!!!!!