Playing with solar
Posted: Tue Feb 28, 2012 6:09 pm
At our farm we don't have electric power. And the closest line is over 1/2 mile away and running a line up to our place was way more than we wanted to spend. We were running off a generator when we needed power but that was expensive to run noisy and a pain to start it up and shut it off all the time. In 2008 we got a used forklift battery 5000 watt power inverter and two small 110 watt solar panels. I had power 24 hrs a day and only had to charge the battery every third day for five hrs. The solar panels were on the shed in the woods and were in the shade so they didn't work very well but was good enough to keep the charge up while we weren't there.
Last fall one cell in the battery went totally bad and needs to be replaced. But we went out and bought a new and larger battery last December. The end of January My brother Tommy and I went changed batterys and moved the solar panels out to where they can get good sun. We also bought partially built 225 watt solar panels that we are working on putting together. And are planning on putting up ten of them at the farm. Which should be enough so we don't have to run a generator at all.
Each of the new panels will be a little larger than both of these put together.
After moving these panels out in the sun we were getting 7.6 amps of charge at 24v which would be 15.2 amps at 12v. By looking at the charge controller the panels are putting out 28.6v and the battery is at 27.1v
Before moving the panels the most we could get was 2.5 amps. But even covered with 1/4 inch of ice and some snow the panels were giving 2.2 amps of charge. But even at 17 deg once the sun hit the panels it only took 1/2 hr to melt the snow off of them.
This is out power shed where the panels were mounted on.
This is the new battery 1500lbs. The old one was 1100lbs. With the new one it should last 5-6 days with out any charge going into it. Definitely one big battery!
The power inverter is the silver thing above and to the side of the battery and the charge controller for the solar panels is mounted on the 4x4 infront of the lawnmower.
Billy
Last fall one cell in the battery went totally bad and needs to be replaced. But we went out and bought a new and larger battery last December. The end of January My brother Tommy and I went changed batterys and moved the solar panels out to where they can get good sun. We also bought partially built 225 watt solar panels that we are working on putting together. And are planning on putting up ten of them at the farm. Which should be enough so we don't have to run a generator at all.
Each of the new panels will be a little larger than both of these put together.
After moving these panels out in the sun we were getting 7.6 amps of charge at 24v which would be 15.2 amps at 12v. By looking at the charge controller the panels are putting out 28.6v and the battery is at 27.1v
Before moving the panels the most we could get was 2.5 amps. But even covered with 1/4 inch of ice and some snow the panels were giving 2.2 amps of charge. But even at 17 deg once the sun hit the panels it only took 1/2 hr to melt the snow off of them.
This is out power shed where the panels were mounted on.
This is the new battery 1500lbs. The old one was 1100lbs. With the new one it should last 5-6 days with out any charge going into it. Definitely one big battery!
The power inverter is the silver thing above and to the side of the battery and the charge controller for the solar panels is mounted on the 4x4 infront of the lawnmower.
Billy