2 Sol-Ark 15K’s, 3 EG4 Power Pro’s, and 6 EG4 LL V2’s as a reserve battery bank

[muaddib721]

My monster system is done on the DC side… gotta upgrade my service to 200 amps and put in the transfer switch with a friend that’s a great electrician.

System components detail: 2 x 15k Sol-Ark inverters, 3 EG4 Power Pro batteries, and a rack of EG4 LL batteries as backup. PV is 12 x 400 watt REC Alpha Pure Black panels in one array, and 22 x 200 watt panels AC coupled from my grid tie system when everything is done.

More solar panels in the future.

 

[muaddib721]

Video of the system on google drive

DC side done 11-11-23.MOV

drive.google.com

 

[oakleaf]

This is great. Did you have trouble getting the EG4 batteries and the Sol Ark to communicate with each other?

 

[muaddib721]

This is great. Did you have trouble getting the EG4 batteries and the Sol Ark to communicate with each other?

After updating the firmware on all the batteries they've been running great. I have recently had a few times when the inverter is sending energy to the grid with the batteries not at 100%. I'm about to do a experiment to see if its the BMS from the battery not communicating properly on occasion. It hasn't been a lot of energy so I could live with it if necessary. I'm talking 200-300 watts.

 

[robby]

Really nice system.
How much power does your house typically draw and what is the peak?

 

[Will Prowse]

How did your back feel after mounting three power pros haha

 

[oakleaf]

Did you AHJ give you trouble about the UL 9540 certification?