The solar panels differ in the amount of volts - the power of the Force - and their amplifiers - the flow of charge - that comes from them. Two 10-Watt panels can be different volts and amps to distinguish a certain amount. This affects the way in which charge the battery.
We are always so simple. There are many things worse than mathematics.
When it comes to solar cells, there are watts, volts and amps.
Watts are a measure of the efficiency of a solar module.
A is alsocalled 'current' and is a measure of the rate of loading.
Volt is also called "electric potential" is a measure of the force behind the river are available.
Watts is volts multiplied by amps (if you remember your high school physics). Thus, a panel of 10 watts is twice as powerful as a 5-watt panel.
Now to complicate things a bit ', you should know that many chemical solar cell is to produce slightly different voltages. For example, a 10-watt solar module with the CIGSCell technology (as Brunton boards) working at 16.5, while the PowerFilm panels amorphous cells, which have an open circuit voltage of 15.6 V to create.
Which is better?
Well, do not forget that Watts is volts multiplied by amps, it is obvious that a panel 10 watt amplifier that provides more, solar panels, which charge a battery will be the fastest.
Most solar cells are designed for use in so-called "12-volt systems" developed, although "12V" is not reallyan accurate description. 12 volts is used, because this is the rated voltage of a car battery, and is easier to supply 120V AC you in your homes. A lead-acid battery in a car containing six cells, each at 2 volts. A 12V battery is actually only about 13V, if it's full, and somewhere around 10.5, when they are actually empty.
Lithium batteries have followed this convention, when the latecomers, the scene was.
Recharge the batteries is a thingto pump water from one bucket to another. As long as the charger is a voltage that the battery is charged, the charging process will flow between them and the battery is charging. For this reason, solar cells are designed to be 15-18V to a 12V battery properly charged. Charge controllers are used to ensure that the plates do not overload the batteries as soon as it is full (in this example would be to close a valve on the siphon hose back to being the second bucket is) Full.
Since the lithium batteries in the world in small electronics, personal solar chargers are designed around them. Therefore, the format has become the standard for USB charging small electronic devices - the 3.7 V lithium battery charges from USB 5V. The lithium batteries in small electronics also comes with its own integrated controller that prevents them from loading as soon as they are full.
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