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#21
Lithium / Re: MNPowerflo 5 question
Last post by FNG - July 15, 2026, 10:24:35 AMI believe we emailed back and forth on this but my thinking is the cells are getting out of balance.
keep in mind a BMS will reset to 100% SOC on high cell voltage so if one cell is lagging behind or ahead the battery will go to 100% and then drain faster as that cell is not aligned with the others.
What is your float voltage on the Classics? if my memory serves me the powerflo5 doesn't start balancing until 54.8V
I personally run my float voltages on my lithiums at 55 so they always balance
keep in mind a BMS will reset to 100% SOC on high cell voltage so if one cell is lagging behind or ahead the battery will go to 100% and then drain faster as that cell is not aligned with the others.
What is your float voltage on the Classics? if my memory serves me the powerflo5 doesn't start balancing until 54.8V
I personally run my float voltages on my lithiums at 55 so they always balance
#22
Barcelona / Re: Barcelona
Last post by FNG - July 15, 2026, 10:21:39 AMFloat Time is only for inverters so without a Rosie or Little Rosie it will not show in the menu.
From what I am reading you are concerned over the time to fill the battery 60% correct?
12 batteries is 61.4KWH if we need to fill 60% that would be 37KWH at 6KWH would be 6.14 hours with no losses etc
From what I am reading you are concerned over the time to fill the battery 60% correct?
12 batteries is 61.4KWH if we need to fill 60% that would be 37KWH at 6KWH would be 6.14 hours with no losses etc
#23
Barcelona / Re: Barcelona
Last post by Wizbandit - July 15, 2026, 06:29:53 AMI suspect FLOAT TIME is for the Rosie Charger...
I never paid attention, I have 2 systems, my House System AKA Garage Power Room only has Hawkes Bays and Classics with a Pre-MNAIO10K AIO Inverter, that system is missing the setting. The Wood Shop System has it, 2 Rosies, 2 Hbays and a Barcelona.
JAMES
I never paid attention, I have 2 systems, my House System AKA Garage Power Room only has Hawkes Bays and Classics with a Pre-MNAIO10K AIO Inverter, that system is missing the setting. The Wood Shop System has it, 2 Rosies, 2 Hbays and a Barcelona.
JAMES
#24
The "Classic" charge controller / Re: Generator control with AUX...
Last post by ClassicCrazy - July 12, 2026, 01:31:14 PMIs this what you need ?
Aux1 State On 0x00004000 Aux 1 ON (aux 1 connector has V or relay is closed)
Aux2 State On 0x00008000 Aux 2 ON (aux 2 connector has V present)
https://www.midnitesolar.com/firmware/classic_register_map_Rev-C5-December-8-2013.pdf
Larry
Aux1 State On 0x00004000 Aux 1 ON (aux 1 connector has V or relay is closed)
Aux2 State On 0x00008000 Aux 2 ON (aux 2 connector has V present)
https://www.midnitesolar.com/firmware/classic_register_map_Rev-C5-December-8-2013.pdf
Larry
#25
The "Classic" charge controller / Re: Generator control with AUX...
Last post by qcda1 - July 12, 2026, 01:02:04 PMSo this works like a charm. The generator start and stop at the programmed parameters.
The only issue is the lack of documentation on the registers for the current firmware.I was able to determine that the lower and upper limit of SOC are registers 4166 and 4172 respectively. I miss the register that contain Aux1 state... That's a bugger since I would like to add these to my Home Assistant integration module.
https://github.com/qcda1/ha_midnite_classic
The only issue is the lack of documentation on the registers for the current firmware.I was able to determine that the lower and upper limit of SOC are registers 4166 and 4172 respectively. I miss the register that contain Aux1 state... That's a bugger since I would like to add these to my Home Assistant integration module.
https://github.com/qcda1/ha_midnite_classic
#26
The "Classic" charge controller / Re: Classic 150 cooling hack
Last post by ralph day - July 12, 2026, 07:09:00 AMIve done similar. A fan hanging above my Classic 250 blowing down on it. It's controlled by Aux 1 on Daylight I think. Runs during the day. Also have drilled 1/4 inch hole grid on the lower part of the cover since all the holes are filled with conduit.
You could try a solid state relay run off Aux of the 150. They're cheap enough.
You could try a solid state relay run off Aux of the 150. They're cheap enough.
#27
The "Classic" charge controller / Re: Classic 150 cooling hack
Last post by ClassicCrazy - July 11, 2026, 11:22:47 AMNice job !
Larry
Larry
#28
Barcelona / Re: Barcelona
Last post by Brucey - July 11, 2026, 09:31:17 AMQuote from: stjohn on July 09, 2026, 04:19:13 PMGood Day Larry,If you had a missing menu setting, assuming support had you do a factory reset to defaults already?
Wow, thank you for all of the information. I did finally get through to James (tech support) but took a few more attempts. He also explained similar to you , the breaker wiring. I trusted what I saw but was curious as to why.
48 hours now since I fully commissioned the Barcelona and it is definitely working. I just may need some additional help in some tweaks with either or bot the Barcelona and the Schneider XW's I am seeing near 7000 watts out of the PV today (max rated 7740) (still have lots of Saharan dust / haze) but it shows me the Barcelona is getting plenty of power. It spent most of today charging the (12) EG4 LL from under 40% soc to now 98% soc.
That is too long a period of time compared to when I had the Classic 200's and (18) 300 PV Monday. And I have one Classic still mounted and wired to the Midnite PDP but no PV input. Way too much to rewire everything to try a few new panels on the old Classic.
So I will reach out tomorrow and see if Ryan or James or if I am lucky Schneider support can assist diagnosing the issues I am having which are: why is it taking so long to charge batteries from 40% to 100% soc (like over 6 hours with average 6000 watts) to Barcelona? Next why are my loads (averaging 2500 watts all day) not being covered by the PV? Slow charging and no loads being managed by solar / batteries? See a attached pictures from this morning and around noon.
As for your software I am interested and have some PC experience but may be a little beyond me. I may be interested in paying for the Solar Assistant. How do I reach them?
Lastly, James was running through the menus with me (specifically the battery menu)and he mentioned that after Float setting the next was float time setting. I do not have that on my menu! He verified my firmware was latest and could not figure out why it is "missing" from the menu. Two days and so far I remain in bulk the entire day but then I am charging all day. There will be an answer I know.
#29
The "Classic" charge controller / Classic 150 cooling hack
Last post by Luis Salva - July 11, 2026, 09:21:09 AMHello all.
I've been a Midnite Solar customer for over 10 years but I'm new at the forum. I've recently installed a new solar system in my apartment running a single Classic 150 supplied by 12 Panasonic 330W panels. The ambient temperature here is never below 30 degrees C during summer. This caused the internal fans on my Classic to run frequently. Knowing that heat is electronics worst enemy, I finally found a way to cool down the classic. I got a 3D printed 90 degree duct that fits like custom built and supports a 140mm computer fan. Adding a PWM fan controller to the setup allows me to adjust the speed of the fan and the Classic operating temperature. I'm looking forward to add a thermostat for fully automatic cooling. The Noctua 140mm 3,000 RPM fan is fully capable for the job even at low speed. By posting this, I just want to share an idea on how to increase a Classic lifespan. Thanks.
I've been a Midnite Solar customer for over 10 years but I'm new at the forum. I've recently installed a new solar system in my apartment running a single Classic 150 supplied by 12 Panasonic 330W panels. The ambient temperature here is never below 30 degrees C during summer. This caused the internal fans on my Classic to run frequently. Knowing that heat is electronics worst enemy, I finally found a way to cool down the classic. I got a 3D printed 90 degree duct that fits like custom built and supports a 140mm computer fan. Adding a PWM fan controller to the setup allows me to adjust the speed of the fan and the Classic operating temperature. I'm looking forward to add a thermostat for fully automatic cooling. The Noctua 140mm 3,000 RPM fan is fully capable for the job even at low speed. By posting this, I just want to share an idea on how to increase a Classic lifespan. Thanks.
#30
Barcelona / Re: Barcelona
Last post by ClassicCrazy - July 11, 2026, 12:34:05 AMHome Assistant is an operating system. It will run on bigger raspberry pi like pi5 ( or maybe pi4) but I run it on a n95 beelink mini pc. Got this when prices were low a year or two ago . I have the mini pc running Proxmox server and the Home Assistant runs as a container on that. You can just do the whole pc of pi directly as Home Assistant OS .
Monitoring remotely is easy , there is a small program called Tailscale that you put in and then it makes a secure link which you can access from anywhere ( it doesn't need ports opened on the computer ).
I would have had some screenshots for you already but I can't copy and paste them here so have to do it a round about way.
I may have some saved already - if so I will add them now.
Monitoring remotely is easy , there is a small program called Tailscale that you put in and then it makes a secure link which you can access from anywhere ( it doesn't need ports opened on the computer ).
I would have had some screenshots for you already but I can't copy and paste them here so have to do it a round about way.
I may have some saved already - if so I will add them now.