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Battery Charger
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Solar Battery Charger
What is solar battery cell?
Let me view the introduce from the wikipedia
A solar cell or photovoltaic cell is a device that converts solar energy into electricity by the photovoltaic effect. Photovoltaics is the field of technology and research related to the application of solar cells as solar energy. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight, while the term photovoltaic cell is used when the source is unspecified. Assemblies of cells are used to make solar modules, which may in turn be linked in photovoltaic arrays.
Simple explanation
1. Photons in sunlight hit the solar panel and are absorbed by semiconducting materials, such as silicon. 2. Electrons (negatively charged) are knocked loose from their atoms, allowing them to flow through the material to produce electricity. Due to the special composition of solar cells, only allow the electrons to move in a single direction. The complementary positive charges that are also created (like bubbles) are called holes and flow in the direction opposite of the electrons in a silicon solar panel. 3. An array of solar panels converts solar energy into a usable amount of direct current (DC) electricity.
Solar battery chargers are better for the environment in a few ways. For one, with them, batteries can be recharged, therefore no longer contributing to growing landfills. Also, batteries have potentially harmful metals inside them – we do not want to be simply throwing them out into landfills!
Also, if using batteries that can be recharged with a solar battery charger, a person can stop wasting his or her money on the purchase of new batteries.
The batteries of cell phones, PDAs, laptops, mp3 players, and more can be charged by solar battery chargers. This means that you do not have to rely on electricity to charge these devices. This is especially good because most electricity is created by non-sustainable, polluting methods.
Solar battery chargers are also good because they allow the users to charge devices, even when no power outlets are around. This makes them especially useful when working out in the field, traveling, hiking, and/or during an emergency.
It does not matter if you use a 12 volt solar battery charger, a solar car battery charger, or any other type of charger – the use of any solar battery charger is going to help alleviate waste. By supporting and using solar battery chargers and other sustainable technology, you can help make a difference in today’s world.
The solar cells positive terminal is connected through the diode to the positive terminal of the 1.2V battery. If the voltage of the solar cell drops below 1.4 volts then with the 0.2V the blocking diode takes there wont be enough potential to charge the 1.2V battery. The purpose of the diode is to disallow current dissipating out from the battery to the solar cell when this low voltage situation occurs in the solar cell.
Usually the solar battery charger are used in camera and camcorder, and placed on the packbag as follow :
.
But how to use a battery solar charger ?
The solar cells positive terminal is connected through the diode to the positive terminal of the 1.2V battery. If the voltage of the solar cell drops below 1.4 volts then with the 0.2V the blocking diode takes there wont be enough potential to charge the 1.2V battery. The purpose of the diode is to disallow current dissipating out from the battery to the solar cell when this low voltage situation occurs in the solar cell.
Usually Solar battery charger can used in digital camera battery when you take photos in the open air.
The article is from : Solar battery chargers
About the Author
Focus on write review and introduce of laptop battery, electronics and digital produce.
How long can you leave a solar battery charger hooked up to your auto?
My car battery goes dead if I don't start it every 2-3 days. I want to go away for 2 weeks or so.. would I be able to leave a solar battery charger hooked up to my auto for that amount of time?
I haven't bought one yet just collecting information right now.
Its likely that you battery may just need to be replaced. Your battery should always start unless its been two months or more. If you battery was dead for a long period of time it may have sulfated in which case it will probably be cheapest to just replace it.
It may also be that your alternator is not charging it up. You can take it to a shop and see or you can measure the voltage with a cheep multimeter. It should be at or above 14v when the car is running(if not bad alternator) and 12.5v and above when the car is off( if not bad battery).
Multimeter:
http://www.aurorapower.net/products/categoryid/5/list/1/level/a/productid/74.aspx
A solar charger is a good idea to make sure your battery stays topped of and never stays dead for a long time. A solar charger that costs less than $100 is not going to hurt your battery. Its power output is useful, but small compared to one that you plug into the wall. I wired a 15watt one into my old car permanently, it works great.
Portable Solar Cell Phone Charger with USB for $17 + free shipping
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August 19, 2005 at 8:29 pm, filed under
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