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If you have a 123 Watt 7 amp solar panel working on charging a 12 volt 225 amp hour gel battery how long will it take the solar panel to charge the gel batter?
You need to provide many more details. So assuming that the panel voltage is reasonable, the panel is clean, it is sunny and the panel is pointed at the sun. Then it will take about 225/7 hours to charge the battery. About 300 hrs. But in fact charging is only about 85% efficient (charge at 14 V get energy out at 12V or so). This ups the charge time to maybe 350 hrs or so. Charging can be improved by inserting a MPPT charger between the battery and the panel. This bit of electronics decouples the battery voltage and the panel voltage allowing the panel to be operated at its' most efficient voltage. That might knock off 15% of charge time bringing you back to 300 sunny hours.
How do you wire a solar panel so that it will charge a 12V battery?
Well, that really depends on the type of panel used. More than likely you are going to need a voltage converter in between your panel and your battery. This converter is a switching powersupply, and takes the nominal voltage of your panel and steps it up/down to the correct voltage for your battery. Switchers have the advantage of being able to take a certain amount of power and turn it into a fixed voltage output. The design of the supply sets the input voltage range, but it can swing across several hundred volt range if designed properly. This is important for one main reason: solar cells have what is called an IV curve. You plot voltage against current for your panel and it shows a nice curve with a bend at high V/I levels. At a specific point on this curve, where V and I are both maximized, is the Maximum Power Point. This is the voltage and current where you get the most power off your panel. Some converters are smart and find this point. They are called Maximum Power Point Trackers or MPPTs. They will draw as much power as possible out of your panel for you to use. The Biel school of Engineering makes some that work well, but they are not cheap. I believe Xantrex technologies makes some as well. I've only played with the Biel's during my tenure on the ISU Solar Car Team. Other converters do not track. They just draw at a certain power level, and if it's not the max so be it. They are the cheaper of the two types. If this is a home panel this type of converter is a viable option as you can set the maximum power output to your battery. Since you don't want to overcharge your battery, the unused potential power from your supply is kind of a wash. Finally, you may be thinking "Well, why don't I just hook it up directly?" Good question. Firstly, if the maximum output voltage of the panel is too high, it can damage the battery. If the maximum output voltage is too low, it will never fully charge your battery. If the voltage output of the panel is less than the battery voltage (Low light), your battery will not charge. This set up will take a long time to fully charge your battery as you are on the high voltage side of the IV curve. The converter eliminates all this by taking a certain amount of power (voltage independant) from the panel and converting it to the correct charge levels for the battery. You will have to research this, as you need to match your converter to your project and panel. Take a look at Xantrex technologies, I believe they make setups for this exact project. Also, if you plan to drive your home with this be sure to talk to your power company. They will tell you how to do it safely, and, if your system is big enough, may let you sell power back onto the grid. Good luck.
How long does it take to charge a deep cycle battery?
The time it takes to charge a deep cycle battery can vary depending on the size and capacity of the battery, as well as the charging rate of the charger being used. Generally, it can take anywhere from a few hours to a full day to fully charge a deep cycle battery.
How long does a 12 volt automotive charger set to slow charge take to charge a battery?
There are a few variables to take into account here. The discharged state of the battery and the current produced by the battery charger on the slow charge position are two of the most important. The amp/hour size of the battery is another governing factor.
How long should it take a 7.2 volt 1800 mah RC car battery to charge on a standard charger?
I charge my battery 4 hours and 30 minutes
How long to charge a 12V deep cycle battery with a 135 watt solar panel?
A few variables are involved like, does the solar panel have a charge controller, what condition the battery is before you start and how much sun is the solar panel receiving.
How long does it take to charge batteries with a solar panel?
No set answer to that. It depends on the capacity of the battery, the size and efficiency of the solar panel and the intensity of the sunlight.
How long does it take to charge 12V battery with 45watt solar panel?
That depends on the amp-hour capacity of the battery.
How long will it take a 13 watt solar panel to charge a 12 volt battery?
The time it takes to charge a 12-volt battery with a 13-watt solar panel will depend on various factors such as the battery's capacity, its current state of charge, weather conditions, and efficiency of the charging system. On average, it may take around 8-10 hours of good sunlight to fully charge a depleted 12-volt battery with a 13-watt solar panel.
How long would it take a 200 watt solar panel to charge a 12V deep cycle battery?
A very long time. I would guess 48 hours of sunlight at the very least. Even that may not be enough to fully charge the battery. It really depends on how much amperage the solar panel is putting out.
How long will a 12v 20w solar panel charge a 200 ah battery?
To estimate how long a 12V 20W solar panel will charge a 200Ah battery, you first need to consider the panel's output. A 20W panel at peak sunlight (about 5 hours of effective sunlight per day) produces roughly 100Wh daily (20W x 5h). To fully charge a 200Ah battery at 12V, you need 2400Wh (200Ah x 12V). Therefore, it would take around 24 days of optimal sunlight to fully charge the battery, assuming no energy loss and ideal conditions.
How long does a solar panel laptop last?
I did not locate a solar panel laptop itself, but there are solar panel laptop charger for the laptop battery. these will last many years and substitute for buying a laptop battery every year.
Can you use a 0.4w 4.5v solar panel to charge a 4.8v battery?
Most likely not. In order to charge the battery to its nominal rated 4.8 volts, youreally need a source capable of more than 4.8 volts open-circuit.You need to take the solar panel and a voltmeter, and measure the output voltageof the solar panel with no load connected to it. If it's more than 4.8 volts, then itwill charge your battery.But . . .That's not saying anything about how long it will take. 0.4 watt is not an awful lotof power, and your solar panel will not even deliver that much before its outputvoltage sags to 4.8 . So I would think that this solar panel will not be an acceptablecharger for that battery.
If you have a 123 Watt 7 amp solar panel working on charging a 12 volt 225 amp hour gel battery how long will it take the solar panel to charge the gel batter?
You need to provide many more details. So assuming that the panel voltage is reasonable, the panel is clean, it is sunny and the panel is pointed at the sun. Then it will take about 225/7 hours to charge the battery. About 300 hrs. But in fact charging is only about 85% efficient (charge at 14 V get energy out at 12V or so). This ups the charge time to maybe 350 hrs or so. Charging can be improved by inserting a MPPT charger between the battery and the panel. This bit of electronics decouples the battery voltage and the panel voltage allowing the panel to be operated at its' most efficient voltage. That might knock off 15% of charge time bringing you back to 300 sunny hours.
How long would it take 400 watt solar panel to charge 12V deep cycle battery?
It depend on the capacity of the battery. This question has been expertly answered by others on wiki-answers with explanations of the physics of it.
How much time to charge a 12 volt battery with 35watt solar panel?
A very, very, long time. Only a guess but I would venture to say at least 15 hours.
What are self generators?
A solar panel on the roof, absorbs light from the sun to produce electricity, sufficient to power the home, and charge a battery in a generator. When rain clouds impede the sunlight or when nightfalls, the battery powered generator is automatically switched on, to power the home, and also power-up its own battery, so that if solar light for some reason does not happen to reach the home's solar panel for a very long time, the generator can keep going.
