How many sealed 12 volt 35AH batteries can this system charge if the 2 panels have 8 hours of direct sunlight?
779402
I have 6 12 V 35AH batteries. I wish I had one more panel to charge in one 5 hr period. Here are my calculations. Assuming a 50% charge, each battery needs about 17 AH to recharge. 2 panels each put out about 8 amps. so 8 hrs X 16 amps is 128 AH. 128 / 17 is about 7. So my answer would be 7 35AH batteries.
779403
With direct sunlight on panels at near 90 degrees incident, you can have 10 batteries in parallel and be fully charged in just a few hours, assuming they have a partial charge already. Two panels in parallel will give you about 15 amps of current(in So. CA) to fully charge any battery(that you can carry) inside 8 hours. A 35AH battery is really way too small for such a system. Be sure to have the charge controller properly wired to the battery(s) or it/they will be destroyed. These are really good panels when properly installed and connected with large gauge(12 or better) wires to the batteries. With direct sunlight on panels at near 90 degrees incident, you can have 10 batteries in parallel and be fully charged in just a few hours, assuming they have a partial charge already. Two panels in parallel will give you about 15 amps of current(in So. CA) to fully charge any battery(that you can carry) inside 8 hours. A 35AH battery is really way too small for such a system. Be sure to have the charge controller properly wired to the battery(s) or it/they will be destroyed. These are really good panels when properly installed and connected with large gauge(12 or better) wires to the... » Read More With direct sunlight on panels at near 90 degrees incident, you can have 10 batteries in parallel and be fully charged in just a few hours, assuming they have a partial charge already. Two panels in parallel will give you about 15 amps of current(in So. CA) to fully charge any battery(that you can carry) inside 8 hours. A 35AH battery is really way too small for such a system. Be sure to have the charge controller properly wired to the battery(s) or it/they will be destroyed. These are really good panels when properly installed and connected with large gauge(12 or better) wires to the batteries. « Show Less
779404
That is going to depend on how discharged the batteries get each night. To give you an idea of what to expect, I have a 1600 ah battery bank and 6 panels. They are able to fully charge the batteries each day as long as it is sunny. They produce around 30 amps for about 5 hours mid day in February. With 2 panels I would expect 10 amps. I am in northern Nevada, farther south you should get more sun/power.
279697
Yes. Two solar chargers would be needed. Please make sure both batteries are fully charged prior to connection. It is also recommended to disconnect the batteries from any possible draws.
1607433
Install batteries in the main unit. Place the panels into the main unit. They should charge from main unit after several hours.
1855639
Hey Edwars O. Not sure. What type/sort of system are you putting together? 6V 12V? What are you needing to run, and for how long? What are your energy needs? I can't answer your question my friend without more info. I personally use the 400 watt system with another 100 watt panel. I match my batt bank so every 100 watt of solar for 100Ah of storage. Yes, it is over kill for just myself! I'm still in the learning processes if you will. The panels that come with this kit have zero issues with charging the batteries on cloudy days. I'm very happy with this basic system so far!!
1311913
You can connect at least 8 solar panels of 100watts each and I have 15 deep cycle batteries on that. You need cables mostly and maybe some safety fuses if you want.
2236907
I use this panel to charge a 4ah lithium iron phosphate battery w/ a charge controller to regulate voltage(14.1). I wanted an unbreakable portable panel for charging electronic devices. You could link two of these in parallel to 2 group 24 batteries but it would only be a trickle charge(<20watts). I would suggest a cheap charge controller even though it's not necessary to extend your battery life. These are nice panels but for two 85ah batteries you might aim for 50-75watts.
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.
1736596
I bought two panels, have not installed them yet. Starting out with 4 batteries @ 100 amps, plan on going to 8 and adding two more panels
974748
You run the panels to a charge controller. These put out 3.33 amps roughly. If you have a charge controller that can handle 15 amps, you could run 4 of these together.
362721
i use the solar to charge a battery then run 12 volt lights off batteryif your using during day try itu may have to add battery for more reserve
1331536
If you match the proper size batteries to your panels through the right size charge controller you will have no problem charging the batteries. The generally accepted ratio is 1 1/2 watts of panel per amp hour of battery for a productive charge. This unit is not a charge controller. This is a 12 volt power inverter that converts the 12 volt power in your battery to 120volt ac for common use. I have one of these. It works ok for the money but it doesn't produce very "clean" electricity.
2153971
I have two sets of these solar panels and eight batteries. I had one set of this panel system and once I went over four batteries, it had a hard time keeping up. So, four batteries (12volt wheel chair batteries) per set is the max.
933674
You need to buy a 12 regulator they sell for solar panels so it will not over charge your 12 volt batteries.
932456
Yes , these are 12V panels .Under full sun , one panel can produce Around 17VDC .You will need a good solar controller to keep voltage to 12V to your batteries
921246
Hey race walker, just about anywhere. I installed my panels on a motorhome that has been using two 12 volt 200 amp hr deep cycle batteries wired in parallel without solar. For the last 6 years I have used two GC-2 240 amp hr 6 volt golf cart batteries wired in series. I have always used this rule, get the newest, heaviest batteries that you can afford. In my case I have been served best by 6 volts golf cart batteries in series since my system is 12volts. Hope this helps
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.
2231190
This solar panel will charge any 12 volt battery. What you need to determine is the amp hour rating of the battery to power this item. You would also need an inverter to convert DC power to AC power. If, for example you used a 108 amp hour capacity battery, you could run this item for nearly 7 hour before the battery voltage would drop and cut off the inverter. You could use two batteries and connect them in parallel to double the amp hours to 216. The preferred battery of choice would be absorbed glass mat batteries for solar applications due to their ability to withstand deep discharge and recharge cycles.