Average sunny summer day in 90291 Cali, even with panel inefficiencies, limited peak hours etc. how many amp/watt hours per day
2049927
My panels are wired in series with 12 other panels so I couldn't read each one without putting an amp meter on them individually. The system turns on before sunrise (05:30 here in Tucson) and runs until 7pm in the summer. The summer months allow approx. 12hrs of fully capacity charging and the winter months allow 10 hrs. Non peak charging accounts for the additional 1 or hours I mentioned before when the system first turns on and before it shuts off.
2049928
At a maximum operating state, this panel will output roughly 1287.5Wh and 42.4Ahr (24 volts).
2049929
I'm in Phoenix. I have two 250W inverters which produce about 3 KWH / Day... so divide by 2 and you get 1.5 KWh per day. In Cali... I'd expect closer to 1.3 or 1.2. Hope that helps.
1981055
70w x 2 at 110 volts? Amps = watts/volts. Amps needed 140/110 x 24 hours =30 amps in 24 hrs. A Renogy Starter kit of 3 panels puts out 300 watts, roughly 1500 watts, or 13.6 amps daily. So 9 panels? Ask Renogy. Also need batteries (golf cart batteries are great) and inverter.
1605298
First, I bought one to keep a deep cycle battery charged up. Second, I would not use the 160 watt panels as they would not be cost effective (you would probably need lots).Instead look at the 250-300watt panels. As to the #, it depends on how much power you consume, and how much of that you want to generate, ie, 5-10KWH per day.
2073697
I have used it on occasion but since I live in So California it doesn't have to work very hard. I also have solar electricity so I generate more than I use each month creating a negative usage with So Cal Edison. So I can't really answer your question. We do like the unit very much.
235287
In practice it's more like 6 amps, but at room temperature mine runs less than 20% of the time. Of course the lower the temperature it's set at and/or the higher the ambient temperature is the more it runs. I fear there is no one size fits all scenarios answer to this question. Also in practice, I had no trouble running two of these in the upper 90's (daytime, of course) on about 800 watts of solar panels.
532398
I purchased this system to act as a 'test bed' prior to buying my main dual-axis 2 panel system (Two 250W, 24V 8A panels). It's a monocrystilline 100w panel stated to output 5 amps, 12volts. I see consistent 13~14 volts at 4 amps, and have hit 5 amps on really good days (but 4A are more realistic). As a test item, I had it charging a 73AH Deep Cycle Gel battery from West Marine (the panel came with a 30A PWM charge controller). It worked fine and charged the battery in a matter of short hours ( I have both an amp meter and a volt meter connected to track its output). Previously, I was using two 45W amorphous panels (Harbor Freight) that took up to 4 days to do what this one panel can do in 4 hours. Buy with confidence.
1998852
One 85 watt panel Should deliver around 7 amps at 12 volts in full sun. If you have all 4 panels connected through a single (7 amp) controller, it is way overloaded. Sounds like you might need 3 more controllers or simply a bigger controller unit.
1747855
You did not mention the application, but more is better. There are many variables. Where you live, altitude, how discharged is the battery. A 15 watt panel puts out about 1 amp so you you need approximately 35 hours to deliver 35 amp hours of energy. If you have any two(volts, amps, watts) you can find the third. VxA=W or W/V=A or W/A=V It would be enough to run a couple LED lights, charge your phone, or run the computer for a few hours everyday.
1202216
Voltage is a constant force, therefore, it generates the given voltage all day long, or at least when there is sunlight. Current is a variable rate of electron flow, with the maximum being .667 amps @ 15 volts of pressure. When you multiply the two, you arrive at ~10 watts. This is an instantaneous measurement. To find a power over time calculation, one needs to know the current draw plotted over time. Let's assume maximum; 15v x .667A x 8 hours = ~80 watt hours, based on an 8 hour, full sunshine day. Less sunshine means less current available. To review: voltage is constant, amperage varies by load and sunshine, wattage is calculated based on current draw times voltage, watt hours are calculated based on current draw times voltage times time. Hope this helps!
990636
Battery in question is 100ah x12v = 1200 watt hours. This panel can provide 144 watts per hour for battery charging purpose. Rule of thumb batteries should not be drained more then 50% or maximum 80% otherwise battery life will be compromised, so we will consider 600 watts to be charged. 600 watts divide by 144 watts = 4.16 hours. Since this panel is 24 volt and your battery is 12v - MPPT charge controller is highly recommended. MPPT charge controller can accept higher voltage (24~36 volt) from the solar panel and charges a lower voltage battery (such as 12v). Morningstar SS-MPPT-15L will be a good charge controller for this setup. Battery in question is 100ah x12v = 1200 watt hours. This panel can provide 144 watts per hour for battery charging purpose. Rule of thumb batteries should not be drained more then 50% or maximum 80% otherwise battery life will be compromised, so we will consider 600 watts to be charged. 600 watts divide by 144 watts = 4.16 hours. Since this panel is 24 volt and your battery is 12v - MPPT charge controller is highly recommended. MPPT charge controller can accept higher voltage (24~36 volt) from the solar panel and charges a lower voltage battery (such as 12v). Morningstar SS-MPPT-15L will... » Read More Battery in question is 100ah x12v = 1200 watt hours. This panel can provide 144 watts per hour for battery charging purpose. Rule of thumb batteries should not be drained more then 50% or maximum 80% otherwise battery life will be compromised, so we will consider 600 watts to be charged. 600 watts divide by 144 watts = 4.16 hours. Since this panel is 24 volt and your battery is 12v - MPPT charge controller is highly recommended. MPPT charge controller can accept higher voltage (24~36 volt) from the solar panel and charges a lower voltage battery (such as 12v). Morningstar SS-MPPT-15L will be a good charge controller for this setup. « Show Less
716277
Theoretically, in ideal sun conditions, your max amp output would be 40A. The adapter would parallel those 4 individual 10A panels together, but it would be up to your charge controller to determine the actual voltage and amperage supplied to the batteries and act as the brain and prevent overcharge.
1547201
hi dearif you work 3 hours everyday，you need 3000w solar panel.About 30 x100w solar panel
1662736
It's going to vary a bit on the day, and as I don't have a standards measuring setup (A 1000W/m2 area) I can't measure that. However, on good sunny days I have measured 1.1-1.3A short circuit.
1287789
13 kilowatt hours each month, 24 hours a day(30 days). 18 watts x 24 hours x 30 days = 12960 watt hours/1000 = 12.96 kwh (kilowatt hours)
1900971
Solar Panel Specifications: Peak power 1.54W. Operating voltage - max 5.5V/min 280mA/3.8V
1275536
Remember that you are pushing amps back into the battery, and with normal losses this 5.3A panel and charger will likely give you 4.5 amps per hour at the battery in good to excellent lighting conditions (that's what I'm getting here in central Indiana). In a day, consider that you'll have 6 hours of bright sunlight, and another 4-6 of indirect sunlight. Conservatively that's about 8 hours of (8 hours x 5 amps) or 36 to 40 Amp-hours restored. That's enough to restore your 85 Ah battery each day if you take it down to 60%. This system should be fine for your battery--and others might point out I'm being very conservative. Even in late afternoon in indirect light I'm getting 4+ amps. You may find a fully-recharged battery each day by mid-afternoon.
318768
Assuming each panel might put out 12 amps at full sun, 6 x 12 = 72 amps. The meter literature says 100 amps rating, 50 amps continuous. Problem is the wire gauge is 14 - so you can't run much wire length (less than 5 feet or 2 meters)at that 50 amps. Borderline. I don't think this will work for your application with that many panels/watts/amps.