Recent posts

#21

The Rosie / Re: Is there a way to get the ...

Last post by FNG - October 26, 2026, 01:46:27 PM

I would check with onan and see if the 2 outputs can be paralleled for 120V, if they can Wizbandint is right

1- Set Rosie for 120/120
2- Physically connect L1 and L2

Now the 26A charge rate will get you 120A dc charge with 60A breaker size BUT do not try this unless Onan says its ok. A quick sanity check would be to measure between AC Hot one and AC Hot two on the onan and see if you get any voltage? If the 2 neutrals are connected and you measure 0v between the 2 hots than they are in phase but still double check with onan

#22

The Rosie / Re: SA update to Rosie setting...

Last post by FNG - October 26, 2026, 01:40:08 PM

Solar Assistant just finished the controls side, Look for the beta version of the Solar Asistant from about a week ago or newer.

What are the issues with 10-12 beta and can you be more specific on the version with the full number and that device it is

#23

For Sale "PRIVATE SALE" / Classic 150, Whizbang, account...

Last post by jaydub - October 21, 2026, 10:52:07 PM

I have several items for sale:

Midnite Classic 150
Whizbang Jr
Midnite Solar breaker box with 2 100A 150VDC breakers
Deltec 500A shunt
125A fuse block

Best offer

I upgraded to AIO but this equipment served faithfully for many years. I'm in Rhode Island. I'd prefer local pickup / delivery, so New England-ish. I think shipping would cost too much. i have other photos but can't upload more. Reach out if you have questions.

Thanks

#24

Hawke's Bay / Re: Hawk's Bay still not worki...

Last post by qrper - October 18, 2026, 10:40:53 AM

When I got up this morning and checked the batteries, they were sitting at 80% and reported a voltage of 53.2.

Hawk's bay status was "FLOAT" yet was charging at 1800W.

I set the defaults as in this message string, and cycled power. HB came back on with "BULK" and charging at 2600 W. It was a few hours later, and more sun hitting the panels now.

So far, I've spent more time looking at this Hawk's Bay than my wife.

#25

Hawke's Bay / Re: Hawk's Bay still not worki...

Last post by ClassicCrazy - October 18, 2026, 10:06:13 AM

Set "REBULK" TO 53.5v with Float = 54.2v and all will work better.

I set "ENDAMPS = 1" and Absorb Time to 20 min because Lithium have a SSR that cuts charge input to "0" amps when they are full and 90 seconds later REBULK forces a drop to FLOAT.

I almost never see Absorb timer hit MAX.

This is only for "Lithium Chemistry" in "Open Loop" control.

I will change the settings today, and see what happens. I have to admit, after using lead acid for over 50 years, the lithium batteries are kind of a pain in the butt.

mike

mike

I also had issues with charging via my hawkes bay until I raised the rebulk. I have my rebulk set for 53.2v and 0 end amps and 54 v float. I have other controllers  on my system - a Classic and a Victron so I needed to tweak settings on all of them so they play nice with each other.

When you get those settings dialed in , you will be amazed at how much faster lithiums charge compared to lead acid. When you had lots of power available with lead acid, the controller would cut back the current . With lithium , your solar array can put all that power into the batteries.

Larry

#26

Hawke's Bay / Re: Hawk's Bay still not worki...

Last post by qrper - October 18, 2026, 09:48:51 AM

Set "REBULK" TO 53.5v with Float = 54.2v and all will work better.

I set "ENDAMPS = 1" and Absorb Time to 20 min because Lithium have a SSR that cuts charge input to "0" amps when they are full and 90 seconds later REBULK forces a drop to FLOAT.

I almost never see Absorb timer hit MAX.

This is only for "Lithium Chemistry" in "Open Loop" control.

I will change the settings today, and see what happens. I have to admit, after using lead acid for over 50 years, the lithium batteries are kind of a pain in the butt.

mike

mike

#27

Hawke's Bay / Re: Hawk's Bay still not worki...

Last post by Wizbandit - October 18, 2026, 08:12:06 AM

Yes, that is known bug in that version firmware, update to 26.1.14.0 and it will be fixed. This version is on the MN Production app (magenta/purple app icon).

Changed from the Android tablet to my iPad. The iPad saw the devices and I was able to upload the 26.1.14.0 firmware.

HB tripped the array breaker off, and then sat there for over 20 minutes with the screen saying there was no MPPT device.

Yes, it does not dynamically auto update the MPPT status, you need to keep pressing "MPPT BUTTON" every so often for it to check...
(Same for a Rosie Update... I have RMA'ed 3 Rosies this year from users power-cycling a Rosie in the middle of a 5-7 minute update from being impatient breaking the update, don't do it)

#28

Hawke's Bay / Hawk's Bay working correctly

Last post by Wizbandit - October 18, 2026, 08:07:17 AM

Set "REBULK" TO 53.5v with Float = 54.2v and all will work better.

I set "ENDAMPS = 1" and Absorb Time to 20 min because Lithium have a SSR that cuts charge input to "0" amps when they are full and 90 seconds later REBULK forces a drop to FLOAT.

I almost never see Absorb timer hit MAX.

This is only for "Lithium Chemistry" in "Open Loop" control.

#29

Hawke's Bay / Re: Hawk's Bay still not worki...

Last post by ClassicCrazy - October 17, 2026, 07:17:29 PM

The last part of what you said about it being in float but drawing power out of the batteries. That is sort of normal with lithium batteries after it gets done with absorb, it will go to float but the battery voltage is above the float setpoint . So power is going to come out of the batteries until it gets to the float setpoint - which will sometimes then show SOC 98 or 99 % .

Usually after firmware update you do a reset and you will have to enter all your settings again. I forget if you can just reset one device via mngp2 - like look for reset in the Hawkes Bay menus and it will not reset the Rosie.

Larry

#30

Hawke's Bay / Re: Hawk's Bay still not worki...

Last post by qrper - October 17, 2026, 12:42:51 PM

Yes, that is known bug in that version firmware, update to 26.1.14.0 and it will be fixed. This version is on the MN Production app (magenta/purple app icon).

Thanks!

However, I can't get the uploader to work. It says 'scanning for device' and just sits there and spins. At the top of the screen it says tap device card to connect. What is that and where is it?

I restarted the android tablet, uninstalled the uploader and reinstalled it. No joy!

I verified that blue tooth was on, on the android table bluetooth screen it sees the two mngp2, the batteries, but not the rosie or the HB.

******************************************************************************************************
UPDATE!

Changed from the Android tablet to my iPad. The iPad saw the devices and I was able to upload the 26.1.14.0 firmware.

HB tripped the array breaker off, and then sat there for over 20 minutes with the screen saying there was no MPPT device.

Remembering from earlier experience, not to start pushing buttons while the firmware is doing its install thing, I waited and waited, and waited some more. After 30 minutes I decided that was long enough, so i pressed the MPPT button and whoa! There was Hawk's Bay. Turned on the array breaker and it's producing 68A in the batteries.

I will keep an eye out on it to make sure it's not doing bad things.

Checked on the firmware, and it reports 26.1.14.0.

mike