In the case of no load, do not connect the positive and negative.
We are manufacturers and wholesalers of solar panels and renewable energy products. Our solar business has been established since 2002. Our engineers are experienced in solar and related accessories, if you buy from us you deal with not just a seller, the whole technical team is behind you and your business. OEM and ODM services are both available. We would like to be your best supplier in China
Frequently Asked Questions
1. What is included in this item?
Solar panel (2PCS*40W mono crystalline), heavy duty aluminum supporting legs ( all aluminum, we never use the steel for legs like other ebay cheaper products))
10A solar charge controller( without LED indicator), battery clips, 2m solar cable
2. what is the brand for this panel?
Ecoworthy, we are the manufacturer of this panel, OEM service is available, wholesales is welcome
3. What kind of Solar Cells does it have
---mono crystalline 125mm×125mm
4. Is the front panel Glass or Plastic
---Tempered glass. 3.2mm thickness, Light transmittance up to 93%
5. Do you have the Schematic Diagram of it
--See above pic
6. Does it meet US Standards for Solar Energy
This is not UL approval products, as the UL cost $100000 for each power range, we did not to do apply UL, but all the producing procedure apply ROHS&UL
7. What is the Efficiency level
--- Between 15-17% for solar cells.
8. What is the Nominal Voltage
--18V, so it can charge 12V battery., if you want 36V, so you can charge 24V battery, just loose the cable from the solar panel and connect them in series, if you not sure what to do, just mail us.
9. What is the Warranty Period, How many years?
Power efficiency warranty:
90% in 10 years; 80% in 25 years.
We offer 2 years warranty against any wrong material use or workmanship defective.