This is a 20 Watt Mono-crystalline Solar Panel and 12V Charger. You could be eligible for up to 00 of energy rebate in California and some states for converting your home power to solar. Please check with your local utility company. The solar panel is waterproof. The working voltage for charging is 17.2V. If you need to use it to charge a car battery, you may need a charge controller to prevent the battery from overcharging. Connections included: alligator battery clamps. There are three type… check this out…
- Assembled professionally with Siemens Mono-crystalline solar cells (in worldwide shortage)
- TUV certified and IP65 rated junction box with cable with MC connector
- By-pass diode to minimize power drop caused by shade
- Waterproof anodized aluminum alloy frame, Anti-reflective high transparency tempered glass
- Solar cell embedded in EVA (ethylene vinyl acetate)
Check Out 20 Watt Silver Frame Mono-crystalline Solar Panel and battery Charger Reviews.
Questions…
How does a solar panel system store energy?
In specific, can a 40 watt solar panel store 100 watts in a battery. Also what is the difference between volts and watts. Another question was that can I was a cigarette lighter power adapter from a car to change the voltage from DC to AC.
Answers…
Answer by Stephen M
>can a 40 watt solar panel store 100 watts in a battery<
Yes.
>what is the difference between volts and watts<
http://en.wikipedia.org/wiki/Volts
http://en.wikipedia.org/wiki/Watt
Not that a question like this can really be answered here, a volt is sort of the electrical equivalent to pressure in a pipe whereas watt is a unit of measure for energy.
The last part of your question is clearly screwed up, but I think you are asking can a cigarette lighter from a car be changed from DC to AC.
The device that does that is an inverter, so yes, but you aren't going to be able to get lots of power for a cig lighter either...
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{ 4 comments… read them below or add one }
This panel appears to work as advertised. The frame is fairly rugged and has six holes drilled for mounting. Ratings stamped on back of unit are: Rated Power: 20W +/- 5%, Isc: 1.24 Amps, Vcc: 21.5V, Im: 1.15 A, Vm: 17.2V, Test Condition: AM1.5, 100mW/cm squared, 25 degrees Centigrade. Inside the junction box on the back, there is a diode in line with one conductor to prevent reverse current flow. The plastic corner protectors are a bit thin, and two of them were cracked when I received the unit, but this was not an important enough feature to me to cause me to return the unit. Would I buy more ? I intend to buy a second unit as soon as one is available.
They don’t, the only way to store the power they produce is in batteries.
Battery capacity isn’t measured in watts they’re measured in volts and amps, multiply volts x amps and you get watts. Watts is a term used to measure electrical usage, volts is the amount of electricity passing through a conductor, and amp is the amount of pressure behind the electricity, like the number of gallons of water going through a hose and the amount of pressure behind it. You need what’s called an inverter to change DC to AC.
I think booboo made a booboo– got your volts & amps mixed up.
Seems like your watts, volts and amps confusion has been handled. I’ll tackle the headline question.
Some solar panel systems store energy and some don’t.
One type of system has no storage capacity at all, hooks up directly to your meter (and the power grid) and delivers power to your house as long as it is generating electricity. Extra capacity is sent to the utility and the home owner’s account usually gets credited.
The second type takes any excess capacity and stores it on site. This is done in a battery array. Although one university professor in NJ is doing it with hydrogen.