What charging amps should I see with MPPT from 2-100w panels mid-day, full sun mounted on an RV roof flat? rough guess
515220
That depends on the battery voltage. With a 12vdc battery you should be around 14 amps when your battery voltage is below 12.0 volts for a 24vdc battery you should be around 7 amps
1411592
Hello,If you are charging 12v nominal battery bank you can input up to 400 watts of solar power.If you are charging 24v nominal battery bank you can input up to 800 watts of solar power.The wiring configuration of the 800 watt panel setup must be done so that you do not parallel all of them or not series all of them or else the panels will either go out of the 100 VDC or the 40A rating.The 800 watt setup must be wiring in series/parallel.Please let us now if you have any further questions.Regards,AW
350741
You will not get more amps than the panel can produce. Watts= Volts X Amps. A 15 Watt panel @13.5 Volts will charge at 1.1 amps.
1832902
Yes; in full sun one of these 15w panel will produce well over 800 milli amps close to 1 amp. 2 panels like these will double the charge rate and so on. My one panel easily maintains and keeps two 105 amp hour 12v deep cycle flooded batteries fully charge to over 12.6v month after month with about 6-8 hrs of full sun.
1784117
I am charging two batteries(lawn mower size) from the panel through the regulator I am adding a transformer to smooth the circuit,,, it ends at a 1000watt inverter, everything seems good,the panel generates electricity even on cloudy days...MPP
789751
Solutions From Science uses a PWM Morningstar and 50 feet of cable with their 90w or 100w panels. However, a high quality MPPT controller will enable you to get as much output from a smaller panel. I recommend the Genasun GV-4-Lead with a 50w panel, or the GV-5-Lead with a 65w panel. Check these out at the Genasun site, then see where you can find them (Amazon does not carry them). They are made in the USA, and are the absolute best for low wattage applications. (I have 5, and love them.) Check Missouri Wind and Solar for the panels. Keep the cable as short as possible, as voltage drop occurs quickly in a 12v system. Also, use solar cable if possible, or at least low voltage landxcape cable, 12 gauge if possible. Finally, mount the charge controller as close as possible to the batteries; not the panel.
352792
Throwing in my two cents. Get two for this. It'll work fine for awhile for you the way you want to do it, but ultimately, your battery is going to lose charge 'cause you will be running close to max on the panel all things considered unless you are in bright sunlight all the time. Plus, over time, your battery is not going to charge as efficiently. My 100W Grape tests at 5 amps in good sunlight. But then there's nighttime....:-) I run an off grid system, and am going to get a second panel just because of those cloudy days. An MPPT controller will help maximize your charging too. I haven't gotten one of those yet. Throwing in my two cents. Get two for this. It'll work fine for awhile for you the way you want to do it, but ultimately, your battery is going to lose charge 'cause you will be running close to max on the panel all things considered unless you are in bright sunlight all the time. Plus, over time, your battery is not going to charge as efficiently. My 100W Grape tests at 5 amps in good sunlight. But then there's nighttime....:-) I run an off grid system, and am going to get a second panel just because of those cloudy days. An MPPT controller will help maximize your charging too. I haven't... » Read More Throwing in my two cents. Get two for this. It'll work fine for awhile for you the way you want to do it, but ultimately, your battery is going to lose charge 'cause you will be running close to max on the panel all things considered unless you are in bright sunlight all the time. Plus, over time, your battery is not going to charge as efficiently. My 100W Grape tests at 5 amps in good sunlight. But then there's nighttime....:-) I run an off grid system, and am going to get a second panel just because of those cloudy days. An MPPT controller will help maximize your charging too. I haven't gotten one of those yet. « Show Less
1378034
If you are living in a RV, spend the extra money and get a MPPT charge controller. I found a cheap priced one made by Tracer. They make a 10, 20, 30, and 40 amp. They are a lot more efficient than a PWM controller.
1528155
If you are out west, 400 AH @12 volts would be a good match. On the East coast, or in some place cloudy like the Pacific Northwest, you might want 600AH @ 12V. Since you want to use 6 Volt batteries, Trojan T-105 would be a good choice. Either 4 of these or six of these hooked up in pairs with a MPPT controller. However if you are asking this question, you might not be smart enough to wire these properly. Get an expert to help.
686119
You need to fully charged your Deep Cycle Battery. Connect your HQRP 30W Flexible Solar Panel and face it towards the sun where you have approx 8 to 10 hrs of sunlight daily . Also I have a Sunright 7 amp Solar Charge Controller for double protection of overcharging. I use it for my Battery Portable Solar Generator, and My RV's House Batteries (trickle charging)
1955409
I have five 100 watt panels now, wired together with MC4 split connectors and running 25 feet to my charge controller. My panels have a working voltage of 18.5V. That gives me 5.5 amp per panel in direct sun. In total I get 27 - 28 amps on a clear day. I have no problem with voltage drop but I am now max'd out on my 30 amp charge controller and the 10 guage wire. If you have a larger system than that you will need heavier wire, unless your panels operate at a higher voltage, wich would lower your amps. As long as you are under 30 amp this wire works great. I hope this helps. Dan
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.
523064
We have similar product for off the grid and will be appropriate for RV or any off-grid power. You can search amazon "235-Watt Solar Panel Charging Kit" by Ensupra.
180694
I am testing this. And from my last 2 times of charging 2 AAA's. i gotten the charge by using Solar and USB with a RavPower 15watt solar panel. down to about 30-1hour vs 3hours of just the solar charger on the XTG charger itself. I'll message back when i test out 4AA's with this try. But it seems pretty good chaining the integrated Solar panel with a USB high power Solar panel together.
1193133
Fully charged agm battery will be around 12.9V. My mppt charge controller blinks when battery charge goes 13.4 and after 1 hour stand by it will go 12.9 V which is sate of full charge (confirmed with Concorde sun xtender rep). But for some reason mt-5 shows 50% and it is wrong. I will find out with monitor manufacturer and update later.
1955408
I have five 100 watt panels now, wired together with MC4 split connectors and running 25 feet to my charge controller. My panels have a working voltage of 18.5V. That gives me 5.5 amp per panel in direct sun. In total I get 27 - 28 amps on a clear day. I have no problem with voltage drop but I am now max'd out on my 30 amp charge controller and the 10 guage wire. If you have a larger system than that you will need heavier wire, unless your panels operate at a higher voltage, wich would lower your amps. As long as you are under 30 amp this wire works great. I hope this helps.Dan
2082892
I did not use the mppt. I just used the regular digital 30 amp control charger. However, the numbers you mentioned sound real good to me. It takes awhile to learn how to convert between watts and volts and amps and so forth. I know that for you to have a reading 0f 13.7 is really good, and that shows you are charged up.