[RE-wrenches] Pytes E-Box 48100 batteries with Midnite AIO

Wed Apr 23 07:01:08 PDT 2025

Jason,

Here is the Pytes Integration Guide for Outback and Schneider. From that, you can glean the setting for open loop. Bottom Line: 56 ABS is fine and 54 FLT is also fine.

Also, I made running list of setting from just about every LiFePO4 battery out there and I decided to lower ABS to 3.45Vpc (55.2) and float also higher (to accommodate SellRE). And I absorb much longer (which only technically happens when off grid, since SellRE voltage is also set to a reasonable number. I usually run my own Radian as Mini-Grid with 8 Pytes in parallel (with 8 eFLEX). The SOC on all 16 batteries usually tracks within 10%.

This sheet is my opiinion and should be taken as such. I also update this every chance I need to as I learn more. I commonly revisit battery banks and add new information.

Maverick Brown
Off-Grid Solar Commander since 2006
Maverick Solar Enterprises, Inc.
 • Solar Commander Remote Power
 • SunFlow Systems Cathodic Protection 
maverick at mavericksolar.com
512-460-9825

> On Apr 23, 2025, at 5:46 AM, Jason Szumlanski via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
> 
> Hi all,
> 
> Maverick's advice was tremendously helpful. 
> 
> My first Midnite AIO install was successful. The physical installation went very smoothly considering it was a retrofit and we had to live with what was there already. The programming took a couple of calls to tech support. 
> 
> I connected the Pytes E-Box stack to the AIO with an Ethernet cable and with PYLON selected I was able to see the battery SOC of 45%, which matched the LEDs on the batteries. But the AIO would not charge from solar or generator. I was confused about this and it was getting late, so I unplugged the cable and set the AIO to Lithium No BMS and it started charging instantly. So something with the battery comms was telling the AIO not to charge. I need to take another run at this and make sure the dip switches were set correctly. I really want to get closed loop comms working here.
> 
> I still don't have the manufacturer voltage setpoints for the Pytes, so I set them to what I think is reasonable for now at 56.0V absorb and 54.0V float. It seems impossible to contact Pytes by phone, so if anyone has the setpoints documented, I would love to get those. 
> 
> Here are some lessons learned and odd quirks about the Midnite AIO in general.
> 
> - Only bring battery cables into the leftmost knockout. Otherwise they will make accessing the MPPT inputs difficult. 
> - Read the manual for startup instructions. The first time you start it must be from the app. The physical button won't work. 
> - If you have a Samsung Galaxy Fold, the WiFi settings can only be set if the phone is closed.
> - The Smart Load outputs will not work unless the main 100A Load Output breaker is on. This was driving me crazy. The whole home only needs 50A, so I was using the 50A Smart Load Output only due to existing wire size. It would not come on even though it was programmed to be on all the time. I finally realized the smart load breakers get their input from the main breaker output. That is not at all apparent (and not documented).
> - It's a little hard to see the MPPT inputs unless you get the right angle. More importantly, check the polarity very carefully. The individual inputs have negative on the left. This could easily be mistaken since the battery inputs have positive on the left. I wish they made this consistent. 
> - The Neutral bus also puts wires in front of the MPPTs. If you can land your PV strings first, that is highly recommended. 
> - I was surprised to see that the app has no individual MPPT performance data. I'll have to check out the desktop version. I hope that data is available.
> 
> That's all for now. If I gather more tips on my next trip, I'll add them here. 
> 
> Jason Szumlanski
> Principal Solar Designer | Florida Solar Design Group
> NABCEP Certified Solar Professional (PVIP)
> Florida State Certified Solar Contractor CVC56956
> Florida Certified Electrical Contractor EC13013208
> 
> On Mon, Apr 21, 2025, 11:43 PM Maverick Brown via RE-wrenches <re-wrenches at lists.re-wrenches.org <mailto:re-wrenches at lists.re-wrenches.org>> wrote:
>> Jason
>> 
>> I think you are in good shape. 
>> 
>> I’ve installed about 40 of them mostly on Sol-Ark. closed loop. 
>> 
>> 1. I also have 8 Pytes connected to Schneider InsightHome. I set the Pytes to Luxpower ( dduudd ) which means 001100 on the 6-pin dip switch. BLU & BLU-wht (pin 4 & 5) at the CAN port of the battery. InsightHome thinks it is talking to Pylon batteries. 
>> 
>> 2. Also, when I plug the MidNite Powerflo16 into insight home, same story: BLU & BLU-wht (pin 4 & 5) at the CAN port of the Powerflo16 to Insight, which thinks it’s talking to a Pylon battery. 
>> 
>> Therefore: put the Pytes DIP to 001100 and use standard rj-45 cable to AIO. They will talk to each other as Pylon protocol. 
>> 
>> If AIO has Pylon as a setting maybe that’s better. Maybe it will also work with MidNite battery setting in the AIO? 
>> 
>> Also, the 4-pin vs 6-pin batteries may have a different firmware version, so make the master a six pin. Just set the 6-pin on the master and leave the rest of the battery dips off. It’s easy to upgrade the firmware via HyperTerminal and that might be a different truck roll. 
>> 
>> Wire the Pytes Link ports, master link1 to slave link0 (slave link1 to next slave link0), last slave link0 is open. Turn on all the rocker switches, then press the Master RED SW button. If all other batteries wake each other up, you’re good!
>> 
>> I have a ton of Pytes resources. 
>> 
>> <preview.png>
>> pytes-v5-quick-start-guide
>> PDF Document · 983 KB
>>  <https://www.solar-electric.com/lib/wind-sun/pytes-v5-quick-start-guide.pdf?srsltid=AfmBOoq9kLATNxlud7QRCEhbAc39uyu3-INy0UJ74lfBylgg3wbHmnnG>pytes-v5-quick-start-guide <https://www.solar-electric.com/lib/wind-sun/pytes-v5-quick-start-guide.pdf?srsltid=AfmBOoq9kLATNxlud7QRCEhbAc39uyu3-INy0UJ74lfBylgg3wbHmnnG>
>> PDF Document · 983 KB <https://www.solar-electric.com/lib/wind-sun/pytes-v5-quick-start-guide.pdf?srsltid=AfmBOoq9kLATNxlud7QRCEhbAc39uyu3-INy0UJ74lfBylgg3wbHmnnG>
>> 
>> P.S. the MidNite Pro App to setup the inverter the AIO installer / editing password is superadmin, all lower case. 
>> 
>> I installed my first MNS AIO today. I still need to setup installer verses user concept, but it was straightforward beyond that. 
>> 
>> I have open loop settings as well that I set for Outback, etc. I can send those as well. 
>> 
>> I’m interested to see how it goes!! Send photos. ;-) 
>> 
>> Thank you,
>> 
>> Maverick
>> 
>> Maverick Brown
>> Off-Grid Solar Commander since 2006
>> Maverick Solar Enterprises, Inc.
>>  • Solar Commander Remote Power
>>  • SunFlow Systems Cathodic Protection 
>> maverick at mavericksolar.com <mailto:maverick at mavericksolar.com>
>> 512-460-9825
>> 
>> 
>> 
>>> On Apr 21, 2025, at 4:29 PM, Jason Szumlanski via RE-wrenches <re-wrenches at lists.re-wrenches.org <mailto:re-wrenches at lists.re-wrenches.org>> wrote:
>>> 
>>> 
>>> I have a client with eight Pytes batteries (not v5) where I am upgrading them to a Midnite AIO tomorrow on an emergency basis. I can't find any integration information, so I assume they cannot talk in a closed loop. That's okay, however, I also can't find charge voltage set points for these batteries anywhere. 
>>> 
>>> Does anybody know the absorb and float voltage of these 51.2V nominal batteries?
>>> 
>>> Also, I noticed some of the batteries have six dip switches, and some have four. I assume these are just different versions. Anything I should be aware of? It looks like they simply Daisy chain together with ethernet cable for battery comms. No dip switch settings are required for inter battery communication. It looks like the dip switches are just for inverter comms.
>>> 
>>> Thanks,
>>> 
>>> Jason Szumlanski 
>>> Florida Solar Design Group 
>>> _______________________________________________
>>> 
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