[RE-wrenches] Midnite AIO Battery Low/Lost Behavior

Wed Jul 16 11:29:15 PDT 2025

Midnite AIO with 8 x Pytes 48100R E-Box.

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 Wed, Jul 16, 2025 at 8:36 AM Jay via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Jason can you remind us what equipment is being used?
>
> Jay
>
> On Jul 16, 2025, at 5:21 AM, Jason Szumlanski via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> 
> This particular system is open loop at this time (which we set to try to
> diagnose the battery random shutdown issue) but the same thing was
> happening in closed loop (Pytes E-Box).
>
> Am off-grid firmware is exactly what we need here. Customers "upgrading"
> from old Trace SW inverters or others are actually getting a downgrade in
> terms of autonomy. These new systems need babysitting.
>
>
> 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 Tue, Jul 15, 2025 at 9:04 PM William Bryce via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> MNP  has a plan for a “off grid”  firmware specification, that will
>> mirror the old UL1741  that was found in the old SW inverters. This will be
>> under the Grid Tab, and will remove all the ESS requirements.  MNP does not
>> have firm timeline for this, but it is on the near term list.
>>
>>
>>
>> On Tue, Jul 15, 2025 at 2:26 PM Jay via RE-wrenches <
>> re-wrenches at lists.re-wrenches.org> wrote:
>>
>>> I can’t agree more that auto restart is a requirement.
>>> A well designed system that has the inverter shut off( shut down or not
>>> sure what the correct term is) due to low battery should restart in the
>>> morning.
>>>
>>> Now I could easily see that it will have to get to some X amount of SOC
>>> or volts or watts of input before it connects the AC loads.
>>>
>>> Jay
>>>
>>>
>>>
>>> On Jul 15, 2025, at 3:21 PM, Chris Schaefer via RE-wrenches <
>>> re-wrenches at lists.re-wrenches.org> wrote:
>>>
>>> 
>>> Mr. Bryce,
>>>
>>> As offgrid is our biggest piece of the pie, I too would like to have the
>>> AIO power back up when voltage is at an acceptable level just as our OB's,
>>> Magnum's and Xantrex's have been for years. My hope is that in the very
>>> near future a firmware upgrade would make this a selectable feature.
>>>
>>> Much appreciated,
>>> Christopher
>>>
>>> On Tue, Jul 15, 2025 at 4:35 PM William Bryce via RE-wrenches <
>>> re-wrenches at lists.re-wrenches.org> wrote:
>>>
>>>> Is this closed loop or open loop?  If closed loop the "rules" require
>>>> the machine to stay shutdown until the "issue" is identified.
>>>>
>>>> On Tue, Jul 15, 2025 at 8:04 AM Tyrone Houck via RE-wrenches <
>>>> re-wrenches at lists.re-wrenches.org> wrote:
>>>>
>>>>> That's my understanding as well. Sure would be cool if there was an
>>>>> automatic reconnect mode that could be set.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Tue, Jul 15, 2025, 7:56 AM Jason Szumlanski via RE-wrenches <
>>>>> re-wrenches at lists.re-wrenches.org> wrote:
>>>>>
>>>>>> With this new breed of AIO inverters, when the battery reaches low
>>>>>> voltage disconnect, do they all need manual intervention to restart
>>>>>> inverting?
>>>>>>
>>>>>> I'm having an issue with a Midnite AIO with a stack of Pytes
>>>>>> batteries that reset themselves for a yet undiagnosed reason. The DC
>>>>>> Battery voltage goes to zero on the inverter for a moment, and then
>>>>>> returns. The problem is, it requires manual intervention to push the button
>>>>>> to turn the inverter back on. It does not happen automatically. That's not
>>>>>> good for an unmanned remote site.
>>>>>>
>>>>>> Jason Szumlanski
>>>>>> Florida Solar Design Group
>>>>>>
>>>>>>
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>>>
>>> --
>>>
>>> Chris Schaefer’s
>>>
>>>
>>> *Tel 585-229-2083 or Cell 585-748-1870 *
>>> *5115 S Hill Road ~ Canandaigua New York 14424
>>> <https://www.google.com/maps/search/5115%0D%0AS+Hill+Road+~+Canandaigua+New+York+14424?entry=gmail&source=g>**www.solarandwindfx.com
>>> <http://www.solarandwindfx.com> ~ E-mail: chris at solarandwindfx.com
>>> <chris at solarandwindfx.com>*
>>>
>>>
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