It depends on hour
example: for 4 hour back up
35AH means 35 amps/1 hr
for 4 hrs : 35x4 = 140 amps
Solar watt required - 140 x 12 (Vx I) = 1680 watts
Please let me know this calculation is correct or not
rshashiku@gmail.com
You can't charge the battery with those 245 watts unless they are being 'pumped into' the battery at a higher voltage than the battery puts out. If you can exceed the voltage of the battery, that 245 watts will definitely charge a battery.
To charge a 35Ah battery, the solar panel output depends on several factors, including the battery voltage and charging efficiency. For a 12V battery, the required energy is 35Ah × 12V = 420Wh. Considering an average solar panel efficiency of about 15% and optimal sunlight conditions, you would typically need a solar panel rated around 100-150 watts to fully charge the battery in a day, assuming 4-6 hours of effective sunlight. Keep in mind that factors such as shading, angle, and temperature can affect actual performance.
To charge any battery the voltage of the input must be more than the battery's output.
1 watt will do the job.
about 500watts/meters of irradiance
You sure can! I charge a marine battery with a 75 watt panel and it goes from a fairly good discharged state to fully charged in about four days.
There is too much information there. Charging a 100 amp-hour battery fully would take 18 hours at 5.5 amps, or 6 hours at 16.67 amps. At 5.5 amps the power would be 12x5.5 or 66 watts, and this is the rating of the solar panel required. That would be about 0.4 of a square metre.
To charge a 12V, 45Ah battery, you'll typically want a solar panel with a rating of at least 100 watts. This is because, in addition to the battery's capacity, you'll need to account for inefficiencies in the charging process and variations in sunlight availability. A 100-watt panel can generally provide enough power to fully charge the battery within a day of good sunlight. However, if you anticipate less sunlight or want faster charging, consider using a larger panel.
For calculation purposes 1 HP is equal to 746 watts. So you have a total of 746 x 7 = 5222 watts. The amperage will be A = W/V = 7222/12 = 435 amps. You can not start the motor directly off of the solar panel. You would need a large 12 VDC parallel connected battery bank to obtain the amperage capacity to start the motor. The solar panels would be connected to the battery bank and used to charge the batteries after the start.
Well, isn't that a happy little question! To charge a 12V 180Ah battery, you'll need a solar panel with a wattage of around 180-200W. This should provide enough power to charge your battery efficiently. Just remember, it's all about finding the right balance between the size of your solar panel and the energy needs of your battery.
To charge a 200 amp-hour battery with a 1000-watt solar panel, you first need to convert the amp-hours to watt-hours. A 200 amp-hour battery at 12 volts has 2400 watt-hours (200 Ah × 12 V). If the solar panel operates at peak efficiency, it can produce about 1000 watts, which means it would take approximately 2.4 hours of peak sunlight to fully charge the battery (2400 watt-hours ÷ 1000 watts). However, considering factors like inefficiencies and varying sunlight, it may actually take longer in practice.
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