Rain or shine we get a huge number of calls about solar power each day. Before we get started, you should know that solar power is not the cure-all for replacing spent energy.
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For example, some people are trying to recharge batteries for a trolling motor, boat, RV, house, electric scooter, backwoods cabin, etc. Assume you take a discharged amp hour battery and charge it with a watt solar panel under ideal summertime light conditions.
After a full week, the battery will be just about fully charged.
Using this example, you can see that it will take at least watts of solar power to recharge a amp hour battery in a Monster 300 series 2018 watt advanced inverter hookup kit days. Also, keep in mind that it takes direct sunshine on the surface of the panel to produce the maximum-rated power of a solar panel. Conditions such as an overcast sky, shadows, improper mounting angle, equatorial direction or short winter days will reduce the actual solar panel output to below the rated values.
Most solar chargers are designed for 12 VDC, but we do have limited availability on a volt panel. Typically, when 24 volts or greater is needed, solar panels may be wired in series, or we can special order solar panels that are made to deliver more DC Volts such as 24, 36, 48 etc. Anytime you use a panel that is over 5 watts rated output, we recommend using a solar charge controller.
Actually, a charge controller is a good idea in a majority of applications, as it can provide several benefits such as preventing overcharge, improving charge quality, and preventing battery discharge in low or no-light conditions. Some solar panels are made with blocking diodes pre-installed that prevent Monster 300 series 2018 watt advanced inverter hookup kit discharge during low or no-light conditions.
In most cases where a 6-watt or larger solar panel is installed, the use of a charger controller is highly recommended. In a nutshell, a solar charge controller acts like an on and off switch, allowing power to pass when the battery needs it and cutting it off when the battery is fully charged.
Something to be aware of when selecting a controller is that they are typically rated in amps, while photovoltaic panels are typically rated in watts. That means a solar charge controller such as the Morning Star SS6L, 6-amp controller will work with nearly every panel we sell, right up to about 70 watts. Solar panel manufacturers rate solar output in watts. As a rule of thumb, a rating of 15 watts delivers about 3, coulombs 1 AH per hour of direct sunlight.
As an example, the Pulse Tech SP-5 panel can output. This is a very popular panel for maintaining single and dual batteries for stand-by and storage applications.
The first thing to remember about solar power is that it is all a matter of numbers. The power you require vs. This figure could be measured in hours or days. Since there are 24 hours in a day, we suggest you use that as a baseline. First, determine your total electrical consumption in that time period.
Then figure the amount of direct sunlight the solar panel will receive in that time period and come up with a total amount of watt hours needed. You should always err on the side of caution and over-estimate your power needs. Typically we see an average of 4 hours of usable sunlight in the winter, and 6 hours of usable sunlight in summer.
Granted, there are exceptions to these averages, but erring on the side of caution creates a more reliable solar system. These averages also help compensate for variables like shade, clouds, panel angle, etc.
Once you have a good handle on your power requirements, I suggest you go to our Solar Calculator. Solar panel ratings are calculated in bright direct sunlight. Conditions such as indirect sunlight, overcast and partial shade conditions will decrease the output. We always recommend over-sizing the size of your solar array, as these conditions occur often. Also, remember that the length of daylight in summer vs. The first complaint is often related to the batteries no longer holding up under load.
When this happens, the batteries start to sulfate at a much quicker rate, and begin to no longer hold under load.
As you can imagine, this is an expensive mistake! Therefore, we advise our customers to be conservative when accounting for daylight hours. Also, if you plan to utilize a solar array year-round, then you need to factor in your daily solar input for winter. This adapter allows you to power 12v accessories that commonly use a 12v DC plug.
In order to connect directly to a panel, the device cannot be sensitive to voltage variation—otherwise they may shut down. To do this, we recommend using a solar charge controllerY-connector with a battery inline on one leg, and the female cigarette socket on the other leg.
Nearly all solar panels are designed for outdoor installation, as this is where they will receive the best, most direct exposure to sunlight. Remember that anything less than that will cause the panel to produce less than its full-rated power.
A periodic inspection to remove dirt, debris and check electrical connections is all that is needed. Keeping the panel clear of snow and debris will allow for better results. Performance from a solar panel will vary, but in most cases guaranteed power output life expectancy is between 3 and 25 years. Of course, this will vary from manufacturer to manufacturer, and as always, you typically get what you pay for.
Watch out for those cheap panels made in Paki-china-nam-istan. Since they change power from one form to another, inverters are power-gobbling monsters and should be avoided when possible. There are DC devices on the market that either step down or step up DC power, and these also use significantly more power.