12VoltInstalls
life passes by too quickly to not live in freedom
The upside is they survive days on end of not reaching 100% as well. Maybe more important in use.The upside of Lithium is you can draw them down deeply
The upside is they survive days on end of not reaching 100% as well. Maybe more important in use.The upside of Lithium is you can draw them down deeply
Have you done any of this:
Say you're getting 30-35V for each panel when you test them from the short MC4 leads that come directly of each panel, but then you test at the end of the 90ft lines and you're only getting 23v. In that case, you don't have enough voltage to charge your battery. It's call voltage drop, which can happen if you use too small of cable for too far of a distance. Now maybe you have just enough voltage, but the end result is you're losing a lot of power (wattage) due to voltage drop.
- tested the actual voltage of each panel with a multimeter?
- also tested the voltage at the end of you 90ft lines?
I'm not much familiar with 24v systems so I won't comment any more. But it seems strange to me that the integrated charge controller in your inverter can't accept more than 60v? I mean if you got smaller panels, say some 100W ones that have a Voc of about 21V, then you could put at least two of those in series for a few more voltage points. My pretty basic charge 30A controller can accept up to 100V.
Have you done any of this:
Say you're getting 30-35V for each panel when you test them from the short MC4 leads that come directly of each panel, but then you test at the end of the 90ft lines and you're only getting 23v. In that case, you don't have enough voltage to charge your battery. It's call voltage drop, which can happen if you use too small of cable for too far of a distance. Now maybe you have just enough voltage, but the end result is you're losing a lot of power (wattage) due to voltage drop.
- tested the actual voltage of each panel with a multimeter?
- also tested the voltage at the end of you 90ft lines?
I'm not much familiar with 24v systems so I won't comment any more. But it seems strange to me that the integrated charge controller in your inverter can't accept more than 60v? I mean if you got smaller panels, say some 100W ones that have a Voc of about 21V, then you could put at least two of those in series for a few more voltage points. My pretty basic charge 30A controller can accept up to 100V.
that circled area is for amps not volts. So it’s set that max charging amps is 25A.Yes, I have done both tests. No issues.
Maybe my inverter can't handle it? The highest I can go is 25v (from the Watchpower app)
View attachment 116472
Your inverter is 600W, your charge controller is 25A max, that is 350W at 14V.Still stumped, my solar family. Any help would be appreciated.
I removed my four panels from the 90" wiring and put them in my driveway on a 6-foot MC4. All four panels are in parallel. Still only pulling 390 watts at max. I think it's the inverter. Time to move on up to a better inverter?
Inverter x 1: PIP 2724LV-MR 24V 2.7kW 120V Inverter, 600W
Solar Solar panels x 4 (used): SST-240-60P Brand : Trina Solar Wattage : 240 Watts Voltage : 37.2V ( open current ) wired in parallel
Batteries x 2: Weize 12V 100AH Deep Cycle AGM SLA VRLA Battery
SolarWatch program (runs on my laptop and plugged into inverter via USB)
Youtube Video of Setup
View attachment 117387
View attachment 117388
View attachment 117389
View attachment 117390
Thank you! I've been testing all day and wondering the same thing, but being so far from even a decent novice, I'm concerned.Your inverter is 600W, your charge controller is 25A max, that is 350W at 14V.
You need a larger charge controller to exceed 390W
Would it be set-up like this? (minus the bottom 4 panels of course)Ignore my previous post, I assumed 12V… 25A at 29V is 725W, so, perhaps the voltage isn’t high enough?
Parallel limits the voltage the panels can send to the controller.
Try doubling up the panels with half in series, before you parallel.
Looks good.
Solar Solar panels x 4 (used):
Try doubling up the panels with half in series, before you parallel.
The way that diagram is isn’t two in series then those two parallel as you were instructed. That is four in series. That might exceed the max open circuit voltage of your SCC- I didn’t look to see.
The way that diagram is isn’t two in series then those two parallel as you were instructed. That is four in series. That might exceed the max open circuit voltage of your SCC- I didn’t look to see.
This is 2S2P:View attachment 117474
A weird-ish diagram but wiring is correct for the panels 2S2P
I just bought LG 280 watt panels for $85 eachSo...I'm thinking once I figure out what I need and purchase the products, I'll come back here and do a tutorial of 'how to set-up a solar panel all-in-one the wrong way'-with the possibility of a video. Hmmmm...who knows.
For now, I found these Solar Panels for sale via Facebook Marketplace.
Would these work for the Solar Inverters above?
View attachment 94141
Yeah, reading the thread I was thinking "NO, don't do that!!!". Glad you got an error instead of smoking your inverter.I did as above:
It exceeded my max of 60v and gave me an error.
Mind you, my panels are 37.2V ( open current ).
Holy cow. I’d find something else fast other than a 60V limit! That obviously is not the MPPSolar I thought it was.Glad you got an error instead of smoking your inverter.
Holy cow. I’d find something else fast other than a 60V limit! That obviously is not the MPPSolar I thought it was.
Personally, I would keep your all in one as just an inverter, and add a quality 60A charge controller with at minimum a 150V max.Do you have any recommendations for a 24v Inverter all-in-one (like I have now) that can do more than 60v? and can do 120/240?
The 120/240 ability is nice so I can charge heavier loads.
A new charge controller is to charge the battery bank with the panels in series so you can get full wattage from them. The inverter can remain as it is if it works for your loads.Thanks again, I appreciate the honesty.
Would the charge controller be for my current inverter so I can use my panels in series?
Let's say I go with a different inverter. I'm assuming this would be a 48v all-in-one, correct?
Also, if so, I would need two more 12 v 100ah batteries to get 48v, right?
Lastly, do you have any suggestions for a 48v inverter?
A new charge controller is to charge the battery bank. The inverter can remain as it is if it works for your loads.