Recent posts

#11

Hawke's Bay / Re: Whizbang Jr and the Hawk's...

Last post by qrper - May 27, 2026, 08:41:55 PM

Dave...
 I do have a rosie, and a classic 150. The rosie has the e-panel, too.
Both have whizbang jr installed.

The WBJR in the rosie e-panel doesn't do much 'cause it's not the the charging loop from the classic. If I used the ac charger in rosie, then the WBJR reports SOC/ charging current and so on. Just not for solar charging. That's done by the WBJR in the classic's homebrew e-panel.

I don't know how I can use the WBJR in rosie, to work with the Hawk's bay.

I haven't gotten it all planned out yet, but I'm thinking of running #2 gauge wire from HWB to the 0000 cables inside the e-panel of the rosie. They (the pos and neg) run to the battery bank. Then connect negative HWB though WBJR, and then of course positive from HWB to the positive post in the e-panel of rosie.

Basically, I'd be using the Rosie E-panel as a tie in point for the HWB, using the large 0000 cables to run current to the batteries.

I won't be able to do much for a while, as I'm going to upgrade the PV so I can have 500ish V going in. Right now, I have my system at about 90V, way, way, too low for the HWB.

The plan is to upgrade the pv panels to 6.4Kw, using the HWB, and let the Classic hum along with some of the left over panels at 90V and 2kw or so.

So, if I were to use the WBJR inside the e-panel  for rosie, do I need to move the purple wire from rosie and route it to the HWB? Can I splice the purple wire and have it feed both the Roise and HWB?
Do I need to purchase another WBJR for the HWB?

mike


Apparently, there is no location for a WBJR inside the Epanel for the hawk's bay

I have the same set up w/a HB and Rosie.  Just cable the battery output +/- from the HB to the battery lugs on the Rosie E-Panel.  The same lugs you connect directly to your battery.  In doing so, the Whizbang JR in the Rosie will capture the power from the HB and report in the SOC. (boB was the one who solved this same dilemma for me a couple years back with this simple solution!)

Good luck with your system

Dave

thanks, Dave,

I might be a bit dense here, but I opened the Epanel on rosie, and to get to the business end of the WBJR, it looks like I'd have to really dig into the wires. The battery end of the shunt is connected to the battery, which is of course correct, however, to get to the 'load' side of the shunt, I can't see how I'd land a #2 gauge wire there. If I connect the HB negative battery to the batter side of the WBJR, it wouldn't see any current flow from the HB.

I'm going to leave the WBJR in the homebrew epanel that the classic feeds.

And it looks like I'm going to take larry's advice and order in a third WBJR, put
 it in a box, and let the HB read current flow going out to the battery. I can save some money by landing the #2 gauge wire inside the rosie epanel.

mike

Consider getting a Victron Smart shunt - they are very accurate and easier to integrate into monitoring program like Home Assistant if you ever want to  do that . Otherwise why not just bolt the cables from a shunt together in one of your existing boxes and remove the shunt from there to use external ? Yeah probably more work than just getting a new one !
Larry

I have a victron smart shunt hooked up now, but it won't talk to the local app and neither rosie or HB know it's there. I need a WBJR to let the HB know what the state of charge is when I get my new rack batteries wired up.

I'm kicking around some ideas in my head. With the price of copper, I'm thinking of trying to use the cables that feed rosie.

mike

#12

Hawke's Bay / Re: Whizbang Jr and the Hawk's...

Last post by ClassicCrazy - May 27, 2026, 06:23:38 PM

Dave...
 I do have a rosie, and a classic 150. The rosie has the e-panel, too.
Both have whizbang jr installed.

The WBJR in the rosie e-panel doesn't do much 'cause it's not the the charging loop from the classic. If I used the ac charger in rosie, then the WBJR reports SOC/ charging current and so on. Just not for solar charging. That's done by the WBJR in the classic's homebrew e-panel.

I don't know how I can use the WBJR in rosie, to work with the Hawk's bay.

I haven't gotten it all planned out yet, but I'm thinking of running #2 gauge wire from HWB to the 0000 cables inside the e-panel of the rosie. They (the pos and neg) run to the battery bank. Then connect negative HWB though WBJR, and then of course positive from HWB to the positive post in the e-panel of rosie.

Basically, I'd be using the Rosie E-panel as a tie in point for the HWB, using the large 0000 cables to run current to the batteries.

I won't be able to do much for a while, as I'm going to upgrade the PV so I can have 500ish V going in. Right now, I have my system at about 90V, way, way, too low for the HWB.

The plan is to upgrade the pv panels to 6.4Kw, using the HWB, and let the Classic hum along with some of the left over panels at 90V and 2kw or so.

So, if I were to use the WBJR inside the e-panel  for rosie, do I need to move the purple wire from rosie and route it to the HWB? Can I splice the purple wire and have it feed both the Roise and HWB?
Do I need to purchase another WBJR for the HWB?

mike


Apparently, there is no location for a WBJR inside the Epanel for the hawk's bay

I have the same set up w/a HB and Rosie.  Just cable the battery output +/- from the HB to the battery lugs on the Rosie E-Panel.  The same lugs you connect directly to your battery.  In doing so, the Whizbang JR in the Rosie will capture the power from the HB and report in the SOC. (boB was the one who solved this same dilemma for me a couple years back with this simple solution!)

Good luck with your system

Dave

thanks, Dave,

I might be a bit dense here, but I opened the Epanel on rosie, and to get to the business end of the WBJR, it looks like I'd have to really dig into the wires. The battery end of the shunt is connected to the battery, which is of course correct, however, to get to the 'load' side of the shunt, I can't see how I'd land a #2 gauge wire there. If I connect the HB negative battery to the batter side of the WBJR, it wouldn't see any current flow from the HB.

I'm going to leave the WBJR in the homebrew epanel that the classic feeds.

And it looks like I'm going to take larry's advice and order in a third WBJR, put
 it in a box, and let the HB read current flow going out to the battery. I can save some money by landing the #2 gauge wire inside the rosie epanel.

mike

Consider getting a Victron Smart shunt - they are very accurate and easier to integrate into monitoring program like Home Assistant if you ever want to  do that . Otherwise why not just bolt the cables from a shunt together in one of your existing boxes and remove the shunt from there to use external ? Yeah probably more work than just getting a new one !
Larry

#13

Hawke's Bay / Re: Whizbang Jr and the Hawk's...

Last post by qrper - May 27, 2026, 05:28:31 PM

Dave...
 I do have a rosie, and a classic 150. The rosie has the e-panel, too.
Both have whizbang jr installed.

The WBJR in the rosie e-panel doesn't do much 'cause it's not the the charging loop from the classic. If I used the ac charger in rosie, then the WBJR reports SOC/ charging current and so on. Just not for solar charging. That's done by the WBJR in the classic's homebrew e-panel.

I don't know how I can use the WBJR in rosie, to work with the Hawk's bay.

I haven't gotten it all planned out yet, but I'm thinking of running #2 gauge wire from HWB to the 0000 cables inside the e-panel of the rosie. They (the pos and neg) run to the battery bank. Then connect negative HWB though WBJR, and then of course positive from HWB to the positive post in the e-panel of rosie.

Basically, I'd be using the Rosie E-panel as a tie in point for the HWB, using the large 0000 cables to run current to the batteries.

I won't be able to do much for a while, as I'm going to upgrade the PV so I can have 500ish V going in. Right now, I have my system at about 90V, way, way, too low for the HWB.

The plan is to upgrade the pv panels to 6.4Kw, using the HWB, and let the Classic hum along with some of the left over panels at 90V and 2kw or so.

So, if I were to use the WBJR inside the e-panel  for rosie, do I need to move the purple wire from rosie and route it to the HWB? Can I splice the purple wire and have it feed both the Roise and HWB?
Do I need to purchase another WBJR for the HWB?

mike


Apparently, there is no location for a WBJR inside the Epanel for the hawk's bay

I have the same set up w/a HB and Rosie.  Just cable the battery output +/- from the HB to the battery lugs on the Rosie E-Panel.  The same lugs you connect directly to your battery.  In doing so, the Whizbang JR in the Rosie will capture the power from the HB and report in the SOC. (boB was the one who solved this same dilemma for me a couple years back with this simple solution!)

Good luck with your system

Dave

thanks, Dave,

I might be a bit dense here, but I opened the Epanel on rosie, and to get to the business end of the WBJR, it looks like I'd have to really dig into the wires. The battery end of the shunt is connected to the battery, which is of course correct, however, to get to the 'load' side of the shunt, I can't see how I'd land a #2 gauge wire there. If I connect the HB negative battery to the batter side of the WBJR, it wouldn't see any current flow from the HB.

I'm going to leave the WBJR in the homebrew epanel that the classic feeds.

And it looks like I'm going to take larry's advice and order in a third WBJR, put
 it in a box, and let the HB read current flow going out to the battery. I can save some money by landing the #2 gauge wire inside the rosie epanel.

mike

#14

Hawke's Bay / Re: Whizbang Jr and the Hawk's...

Last post by qrper - May 27, 2026, 05:19:40 PM

really the best thing would be to take one of your shunts and mount it in another box of some kind so you can install it directly to the battery and in between everything else. Then  the Whizbang can see your whole system .
That is really the only way to have it work to your advantage.
Larry

Is there a limit on how far you can run that purple wire from the shunt to a hawks bay?

Mike

The question has been asked in the past - here is one answer  from boB
https://midniteftp.com/forum/index.php?topic=1818.msg16424#msg16424

thanks, Larry,

The search engine on this forum leaves a lot to be desired.

mike

#15

Hawke's Bay / Re: Whizbang Jr and the Hawk's...

Last post by aaapilot - May 27, 2026, 10:58:50 AM

Dave...
 I do have a rosie, and a classic 150. The rosie has the e-panel, too.
Both have whizbang jr installed.

The WBJR in the rosie e-panel doesn't do much 'cause it's not the the charging loop from the classic. If I used the ac charger in rosie, then the WBJR reports SOC/ charging current and so on. Just not for solar charging. That's done by the WBJR in the classic's homebrew e-panel.

I don't know how I can use the WBJR in rosie, to work with the Hawk's bay.

I haven't gotten it all planned out yet, but I'm thinking of running #2 gauge wire from HWB to the 0000 cables inside the e-panel of the rosie. They (the pos and neg) run to the battery bank. Then connect negative HWB though WBJR, and then of course positive from HWB to the positive post in the e-panel of rosie.

Basically, I'd be using the Rosie E-panel as a tie in point for the HWB, using the large 0000 cables to run current to the batteries.

I won't be able to do much for a while, as I'm going to upgrade the PV so I can have 500ish V going in. Right now, I have my system at about 90V, way, way, too low for the HWB.

The plan is to upgrade the pv panels to 6.4Kw, using the HWB, and let the Classic hum along with some of the left over panels at 90V and 2kw or so.

So, if I were to use the WBJR inside the e-panel  for rosie, do I need to move the purple wire from rosie and route it to the HWB? Can I splice the purple wire and have it feed both the Roise and HWB?
Do I need to purchase another WBJR for the HWB?

mike


Apparently, there is no location for a WBJR inside the Epanel for the hawk's bay

I have the same set up w/a HB and Rosie.  Just cable the battery output +/- from the HB to the battery lugs on the Rosie E-Panel.  The same lugs you connect directly to your battery.  In doing so, the Whizbang JR in the Rosie will capture the power from the HB and report in the SOC. (boB was the one who solved this same dilemma for me a couple years back with this simple solution!)

Good luck with your system

Dave

#16

Hawke's Bay / Re: Whizbang Jr and the Hawk's...

Last post by ClassicCrazy - May 26, 2026, 10:54:03 PM

really the best thing would be to take one of your shunts and mount it in another box of some kind so you can install it directly to the battery and in between everything else. Then  the Whizbang can see your whole system .
That is really the only way to have it work to your advantage.
Larry

Is there a limit on how far you can run that purple wire from the shunt to a hawks bay?

Mike

The question has been asked in the past - here is one answer  from boB
https://midniteftp.com/forum/index.php?topic=1818.msg16424#msg16424

#17

Hawke's Bay / Re: Whizbang Jr and the Hawk's...

Last post by qrper - May 26, 2026, 10:26:58 PM

really the best thing would be to take one of your shunts and mount it in another box of some kind so you can install it directly to the battery and in between everything else. Then  the Whizbang can see your whole system .
That is really the only way to have it work to your advantage.
Larry

Is there a limit on how far you can run that purple wire from the shunt to a hawks bay?

Mike

#18

Hawke's Bay / Re: Whizbang Jr and the Hawk's...

Last post by ClassicCrazy - May 26, 2026, 08:04:37 PM

really the best thing would be to take one of your shunts and mount it in another box of some kind so you can install it directly to the battery and in between everything else. Then  the Whizbang can see your whole system .
That is really the only way to have it work to your advantage.
Larry

#19

Hawke's Bay / Re: Whizbang Jr and the Hawk's...

Last post by qrper - May 26, 2026, 06:02:32 PM

Have you looked at this document? It may give you some insight.

https://www.midnitesolar.com/pdfs/10-562-1_Rev_D_(MNE300ROSIE-240P_Manual)_27SEP2023.pdf

Yes, I have. Thanks for the note

#20

Hawke's Bay / Re: Whizbang Jr and the Hawk's...

Last post by UpNorthMan - May 26, 2026, 05:30:07 PM

Have you looked at this document? It may give you some insight.

https://www.midnitesolar.com/pdfs/10-562-1_Rev_D_(MNE300ROSIE-240P_Manual)_27SEP2023.pdf