EG4 18kPV Q+A general thread

[y0bailey]

This may be the dumbest question ever, but here we go!

I just added a second PowerPro. Things seem to be running fine, but does the "second battery" show up anywhere in the dashboard to monitor it?

I think it's working because on the PowerPro screen the new "slave" battery is charging with no faults, and the "master" is discharging with no faults. I am guessing that is happening because the master is at 75% and the new slave is at 46% so they are trying to balance?


Am I missing something? Is there somewhere to look for more information about both batteries on the inverter/app/etc.?

 

[Q-Dog]

View attachment 193268

This may be the dumbest question ever, but here we go!

I just added a second PowerPro. Things seem to be running fine, but does the "second battery" show up anywhere in the dashboard to monitor it?

I think it's working because on the PowerPro screen the new "slave" battery is charging with no faults, and the "master" is discharging with no faults. I am guessing that is happening because the master is at 75% and the new slave is at 46% so they are trying to balance?


Am I missing something? Is there somewhere to look for more information about both batteries on the inverter/app/etc.?

It is generally recommended to charge batteries fully on their own, or at least have them at similar charge levels before connecting them together.

 

[y0bailey]

It is generally recommended to charge batteries fully on their own, or at least have them at similar charge levels before connecting them together.

Woops. That is also going to be impossible without how I have them mounted and the gear I have.

Hopefully they will balance out. I feel like they have to be smart enough to figure this out?

 

[Q-Dog]

Can your turn off the fuller battery to let the other catch up?

 

[zanydroid]

Hopefully they will balance out. I feel like they have to be smart enough to figure this out?

They just parallel into each other and let the analog gods sort it out. It’s an electron free for all. The BMS is all or nothing.

 

[y0bailey]

They just parallel into each other and let the analog gods sort it out. It’s an electron free for all. The BMS is all or nothing.

I'm not smart enough to figure out what this means... Will they figure it out or should I try to balance them by powering off a battery and get both to 100% before turning both on?

 

[Zapper77]

View attachment 193268

This may be the dumbest question ever, but here we go!

I just added a second PowerPro. Things seem to be running fine, but does the "second battery" show up anywhere in the dashboard to monitor it?

I think it's working because on the PowerPro screen the new "slave" battery is charging with no faults, and the "master" is discharging with no faults. I am guessing that is happening because the master is at 75% and the new slave is at 46% so they are trying to balance?


Am I missing something? Is there somewhere to look for more information about both batteries on the inverter/app/etc.?

Did you adjust the dip switch on the 2nd battery?

Did you connect the communication cable from battery 1 to battery 2?

 

[y0bailey]

Did you adjust the dip switch on the 2nd battery?

Did you connect the communication cable from battery 1 to battery 2?

Yep, DIP switch on 2nd battery set to #2, parallel cable between the two batteries into the bat com ports.

 

[Zapper77]

Yep, DIP switch on 2nd battery set to #2, parallel cable between the two batteries into the bat com ports.

I think this should show 200 and 400 if the inverter is detecting both batteries.

 

[y0bailey]

I think this should show 200 and 400 if the inverter is detecting both batteries.
View attachment 193269

So weird. Anything I should be trying?

What color is the battery parallel cable? The one I am using is green.

 

[Zapper77]

So weird. Anything I should be trying?

What color is the battery parallel cable? The one I am using is green.

I don't own the powerpro battery, so I'm not sure what's required.

 

[y0bailey]

OK...I am out of ideas.

Anyone seen anything weird here?

Looks like I'll have to reach out to SS and see if they can help me.

 

[Zapper77]

OK...I am out of ideas.

Anyone seen anything weird here?

Looks like I'll have to reach out to SS and see if they can help me.

What kind of cable did you use for communication between the two batteries?

 

[y0bailey]

What kind of cable did you use for communication between the two batteries?

The provided green cable that came with the parallel kit.

Any specific cable I should swap out and try?

 

[Zapper77]

The provided green cable that came with the parallel kit.

Any specific cable I should swap out and try?

Is the cable labeled?

 

[Zapper77]

The provided green cable that came with the parallel kit.

Any specific cable I should swap out and try?

Is the firmware the same on both batteries?

Have you rebooted each BMS?

Is each battery programed for the same protocol?

 

[Zapper77]

The provided green cable that came with the parallel kit.

Any specific cable I should swap out and try?

Does the online user manual say anything that would be helpful?

We're both batteries purchased at the same time?

 

[y0bailey]

Is the cable labeled?

No label on the cable. I'll try another cable and see if I have any luck.

BMS's have been restarted several times.
Batteries purchased months apart.

It does look like firmware is different between the two. I'll see if I can track down the latest firmware and get them to match up.

 

[Quattrohead]

The supplied green cable is the one to use, but it is a standard cat 5 cable.
The multiple battery monitoring may need firmware upgrades on the inverter and batteries, this is all relatively new stuff.
Also do you happen to know which type of dongle you have on the inverter.

 

[Zapper77]

The supplied green cable is the one to use, but it is a standard cat 5 cable.
The multiple battery monitoring may need firmware upgrades on the inverter and batteries, this is all relatively new stuff.
Also do you happen to know which type of dongle you have on the inverter.

Both dongle types provide basic battery details.