My two 4215BN controller continue to work fine without me having to power cycle the panels. We're supposed to get rain Wednesday through the weekend. That will be a good test to see if they get stuck in cloudy days - though I don't have a good way to see that other than to monitor my Smart...
No, the 100W panels in series will still have a limit of 4.9A but now you're clamping its series voltage down to the output voltage of a single 200W panels. The 200W panels need to be in series too in your dwg.
Two nights ago I updated one controller to FW version 1.04 but left the second one at what it was delivered with (1.02). The very next morning, the one I updated was correctly performing MPPT, and the one I did not update was stuck. The wife power cycled the panels to fix the stuck one.
Last...
I pulled 61AH from the batteries overnight. This morning it took a while before the panels starting putting out decent power due to shadowing. It took a long time but eventually got up to 33.3A of charging at 27.4V, or 912W coming out of 1.5KW of panels, but mounted flat and here in So Cal...
That may be true but it is also being sold by DLJBERMPW too for $439 and $404. I wrote to them and they said it’s the same battery but the one link is participating in a short Amazon promotion. They also said they were prismatic not pouch. Based on their reply I went ahead and bought one.
Today is sunny with patchy clouds. I watched the power production for a few hours while I was hooking up and testing my new Victron 24/1200 inverter. Production was up and down with every passing cloud and at no time did the two 4215BN controllers drop out of MPPT mode. Load was 700W continuous...
Here's an update on where I'm at.
- I found that Samlex makes a 24V input 600W pure sinewave inverter that meets FCC class B emissions. I just received one yesterday but haven't fired it up yet to check its output. I have high hopes that it will be clean.
- Separately I've purchased both a...
The tech already got back to me on my questions. He did not say that the fw specifically fixes MPPT issues, he just said "it fixes some program bugs, maybe the update can solve the problem".
What I found interesting is that I sent a screenshot of the PC software tool showing my settings and...
What battery voltage are you going to run? You've got 800W of panel and at 12V you'll need 67A (or 57A at 14V). If you go to 24V, you'll be able to get by with the 150/35.
(150V input as 24.3V * 4 = 97.2, too close if the weather gets cold as the PV OC voltage goes up with dropping temps.)
All the power tool chargers I've had have switching power supply type topologies and have horrible power factor. So I'm guessing that though it's 550W of draw, VA rating is very different and it is confusing the protection circuitry in the Giandel.
I had the same problem with my both my EPever 4215BN's. The factory sent me new firmware and it solved the problem. The firmware wasn't on their website. Been working fine ever since I updated it. That said, now with the Victron price drop, I can get a Victron 150/45 Smart for nearly the...
I read up on the EPevers dropping out of MPPT and from what I could gather, it wasn't the BN series. I hope that's true.
I do know that I have more panels than my single 4215BN can handle, so I will be looking for another SCC. Right now I will be feeding the BN with 3S2P REC Solar 250W...
I just joined the club. Ordered a 24/1200 Phoenix inverter and it was delivered today. Going to charge my EV with it as I can limit my EV to 5A charge rate even with level 1 charging.
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I'm leaning towards agreeing with you. A year or two ago, there was better differentiation on components, but I think they all are using the same contract manufacturer and components at the level I'm interested in.
I've pretty much decided to go with Redodo due to pricing and the innards...
What many of us ‘stuck’ Epever owners did to show its a fault of the controller is to disconnect the panels and reconnect them. Each time I did that I made a lot more power as the controller found the correct mppt point again.
Are you able to disconnect/reconnect your panels next time you have...
Fred Zhao is the one that gave me new FW for my BN and fixed that problem. Haven't had an issue for many many months, with cloudy rainy days even. Solid performance.
And then to a raspberry pi?
We have rain coming up next week and I’d like to see what I can produce or not produce on cloudy days.
In other news - my two 4215BNs came up okay again today. So far still good.
I see a thermistor on your LiTime. Which one did you buy? Was it advertised to have low temp charge protection? And what is that round black disk on the left top of the pack?
Your BMS is interesting in that it is fully packaged. How is the heavy gauge negative leads attached?
I'm only plan to go to 24V in a 2S1P or a 2S2P configuration. Regarding taking it apart, I should have been more clear. If I end up with a bad battery, or upgrade to newer batteries or technology in the future, these batteries will always be useful, and much more useful as a 12V pack than a...
Thanks for the details. I see that my 4215BN has shipped - with luck I'll have it in time to play this weekend. I don't have any logging capability yet, but did buy a Victron Smartshunt. Not sure if it's fast enough to see voltage spikes.
Your units definitely need to be dealt with.
I'm still having no issues with my 4215bns. Today I tested the Victron 24/1200 inverter at its highest setting by having my EV set to 10A of charge limit instead of 5A to see if it could handle it. It did but the alarm LED was on. After a few...