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diy solar

EG4 Indoor 280Ah 48v WallMount Battery

Madcodger said:
How close to each other can you install them, to be able to reach in and access the on/off and breaker on the side? The 12" requirement of the older model was pushing me toward server rack style batteries, but if only 3-4" or so required for these, they would sure be a space saver for our new build.
Click to expand...
Quick start guide is the full manual ATM, 12" is still required between the batteries. However, the indoor version is only 18" wide instead of 22" for the outdoor version.
 
wpns said:
Anxious to see how the spacing between them comes out with the conduit boxes, I can't tell how much the recommended 12" spacing on the outdoor model is code and how much is reasonable access to the side controls. Will seems to want to put them right up next to each other, but the latches on the conduit boxes will require _some_ minimum spacing.
Click to expand...
The conduit box is the same size/universal AFAIK. I would recommend 6" between each using regular EMT but you could probably use 2" spacing with chase nipples.
 
I was ready to sell my Rack Mounts and replace with this, but then I read the manual and with 1 18KPV, you can only connect 3 of these. whump whump. I do like these but I am actually thinking of adding even more batteries, as 60 kWh isn't enough for me, so 45 definitely isn't gonna do it.

If I didn't have my rack mounts, I'd def consider these, but that 3 per inverter limit is a killer.

I am wondering, however, if the 3 per inverter is a limit of the 600 AMP busbar and the wiring? What if, instead of 2/0, you used 4/0 from a bank, could you then get 6 connected to one 18, as two banks of 3 each?
 
millsan1 said:
I was ready to sell my Rack Mounts and replace with this, but then I read the manual and with 1 18KPV, you can only connect 3 of these. whump whump. I do like these but I am actually thinking of adding even more batteries, as 60 kWh isn't enough for me, so 45 definitely isn't gonna do it.

If I didn't have my rack mounts, I'd def consider these, but that 3 per inverter limit is a killer.

I am wondering, however, if the 3 per inverter is a limit of the 600 AMP busbar and the wiring? What if, instead of 2/0, you used 4/0 from a bank, could you then get 6 connected to one 18, as two banks of 3 each?
Click to expand...


3 is just the limit for the internal bus bars. Technically if you are only using one 18kpv you could configure it differently and have more. Or just add a central bus bar and go to that first.
 
millsan1 said:
I was ready to sell my Rack Mounts and replace with this, but then I read the manual and with 1 18KPV, you can only connect 3 of these. whump whump. I do like these but I am actually thinking of adding even more batteries, as 60 kWh isn't enough for me, so 45 definitely isn't gonna do it.
Click to expand...
I believe that's a UL limitation. 60kwh is hard in a UL compliant install. If you're willing to break the UL cert nothing is stopping you from paralleling more.
 
hwy17 said:
I believe that's a UL limitation. 60kwh is hard in a UL compliant install. If you're willing to break the UL cert nothing is stopping you from paralleling more.
Click to expand...
I hear ya, but then why doesn't EG4 make it 4 batteries? Would still be under 60.
 
millsan1 said:
I was ready to sell my Rack Mounts and replace with this, but then I read the manual and with 1 18KPV, you can only connect 3 of these. whump whump. I do like these but I am actually thinking of adding even more batteries, as 60 kWh isn't enough for me, so 45 definitely isn't gonna do it.

If I didn't have my rack mounts, I'd def consider these, but that 3 per inverter limit is a killer.

I am wondering, however, if the 3 per inverter is a limit of the 600 AMP busbar and the wiring? What if, instead of 2/0, you used 4/0 from a bank, could you then get 6 connected to one 18, as two banks of 3 each?
Click to expand...
I was just rereading the manual, and the section could use some work...

You can use more batteries, just use an external fused positive busbar - 200A fuse on each battery. Unfused negative bus bar.
 
wpns said:
I though the manual went all the way up to five PowerPro batteries per 18Kpv?
Click to expand...
Nope, says 5 with 3 18s.


When relying on the internal busbars, up to 3 batteries are supported in parallel when connected to a single inverter, 4 batteries in
parallel when connected to 2 inverters, or up to 5 batteries in parallel when connected to 3 inverters.


But now that I am reading this, it specifically says "when relying on internal busbars" like @HighTechLab pointed out, above
 
SignatureSolarJames said:
the lifespan data on the 304ah cells are not there yet. people have gotten trouble jumping the gun on cell life validation and we will try not to. I think we hit 304 this year though, the question is which cell company can prove it will get close to 8000 cycles
Click to expand...
I wonder if this is why Trophy switched to a 16s3p with 100Ah cells on their big battery from the 16p1s of the older model.
 
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