24 T-105s, charging from 12 200-watt panels. Not that they have to charge very much, since the inverter and support equipment are the only loads these particular batteries ever see. By comparison, I just recently installed 4 older T-105s and the improvement was exponential rather than incremental. This sucker is six times the size of mine.
But it just sits there, maintained but unused, because the owner paid for the installation and then was diagnosed with a bad sort of cancer and I’ll be pleasantly surprised to ever see him again. He pays me to watch the place, which includes unlocking the shed once a month and ensuring that things are still there. Once I had to get Neighbor S to come help take the charge controller apart to remove a pack rat nest. I’m not kidding about that.
It’s funny how things go. One moment your on top of the world and the next…
Never say never about the owner. With the cash to put in stuff like this I wouldn’t be surprised if his medical care wasn’t the best. If it really isn’t curable he may just return to end his days in a location where he feels it’s home.
The lack of a battery rack vaguely offends me, but I’m not really sure why. That looks like a very functional installation.
Three strings of 48 volts I believe. Figuring 50% capacity that should be around 5 kWh if I did the math right. Very decent!
As the person who would have to service these batteries’ electrolyte levels if they were under use, the lack of a rack offends me greatly. Almost as much as the cable arrangement, which makes it impossible to remove caps without manipulating cables. This was always intended as a temporary arrangement, as the installer wasn’t being paid to be a carpenter. Unfortunately it has become longer-term than planned.
Funny enough, I’m a production supervisor at Trojan Battery. I may have made some of those batteries.
Well, they do good work. I hear they’re billed as golf cart batteries, and I’m sure they do a fine job of it, but they’re also very popular as inexpensive solar power system batteries.