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Several years ago, I converted off of my oil fired hydronic system. In doing so I had a bunch of leftover parts (hydronic coils, indirect water heater, etc.) I kept all of it hoping to do a solar thermal setup somewhere down the line and I finally picked up some cheap new/old stock flat plates...

I purchased a set of used Sunny Islands to compliment my existing ones. The AC1 and AC2 connectors are different than the screw type of my current ones. Does anyone know how to release the wires from these? The previous owner cut the wires instead of pulling them out proper. They seem like...

New and unopened. Can be opened for pictures upon request. 320lbs 52" x 37.5" x 12" is the box dimensions. Freight shipping or local pickup only. Asking $6500.

Brand new. Purchased 3. One for each positive, negative, and ground but ended up getting an enclosure that came with bus bars already. Asking for $125 shipped.

I plan on using mine in a backup capacity, but a bit concerned about essentially storing them at a high state of charge. Keeping them at 40% SOC would seem to defeat some of the positives associated with a LifePO4 system. How is everyone handling this? Are you keeping them at a low SOC in...

Purchased in 2014, used for 6 years where it stored (4) 12V AGM Class 31 Batteries. Enclosure stayed indoors inside a basement and is in good condition. This is the 2 shelf version. Upgrade to 3rd shelf can be added but does not come with this. Prefer local pickup and can leave it assembled if...

Hi, I'm new to batteries and battery building and trying to read up and learn as much as I can so I can build my own LifePo4. One of the things I came across as a big no-no seems to be a parallel string configuration. But I'm trying to understand the difference between a parallel cell...

My familiarity is with AC generators as DC generators seem pretty rare to start with, but I just found some surplus ones that put out 48v DC. It just happens to match my battery bank perfectly; which is feeding the house via SMA Sunny Islands. Before I jump on the purchase, I just wanted to...

A picture is worth 1000 words... Would it work? I should note that I already have the Sunny Islands, just trying to figure out if I can make it work with the existing system.