Home-made Mini 12V Solar Panel

This was posted on 2016-06-14

I recently bought four really cheap 0.6W-0.7W, 6V solar panels from eBay and they worked well when I tested them on their own. So I decided to use all four of them to make a small solar panel to power small projects.

Solar Panel

I coupled up the four solar panels, two in series to create ~12V and the two pairs in parallel to double up the current. For now I drilled a couple of holes in an old doorbell enclosure and fixed the solar panels on to it.

Solar Panel

Quick tests revealed that in direct sunlight it was able to provide an open-circuit voltage of about 13.5VDC and a short-circuit current of about 0.3A. This was alright for some small projects.

Solar Panel

On my workbench I made a small hub which allows me to see the current voltage delivered by the solar panel. I can also use a switch that I fixed behind the unit to toggle between solar power and fixed 12V DC output from a power pack.

Solar Panel

I have not yet added a storage battery to the project. I intend to keep working on this project and make it better. At the moment it passes through a buck converter and charges up a few 9V batteries during the day time.

The solar panels that I bought from ebay were working properly but they were not delivering enough power to do anything useful. So I decided to purchase a few more solar panels and improve the project.

Solar Panel

The four solar panels in the bottom are repurposed from the previous project and as you can see these solar panels do not last very long in the outdoors.

Similar Posts

See other projects and posts in the same category as this post

blog item Powering through Power Cuts SL-2022 #GoHomeGota
As many of you already know, in 2022 Sri Lanka started to face one of the most difficult economic downfalls in history. The country was not able to meet impot demands due to a shortage of Dollars and this included Fuel. With no Fuel, the country had to face shortage of transportation and a number of blackouts every day for a number of hours at a time. But work still went on. Work from home which was starting to fade out after the normalization of the COVID crisis was back in effect in most offices. But this time around we had to do it while facing daily Power cuts as well as other downsides of the economic crisis. To provide a solution for the Power Cuts, I installed a solar system to my house to power the bare essentials during a Power cut.
Solar, Electronics 2022-07-09 | Read More....
blog item Home-made Mini 12V Solar Panel
solar, hobby 2016-06-14 | Read More....
Comment Box is loading comments...