I have an APC battery backup, rack mounted. This model, SC1500, has a series of 4 batteries and the batteries were screaming to be replaced. I had my boss order the batteries and we got them but they were 4 unlinked batteries. This is a pain. I attempted to connect them the same way they were connected and got a spark. After that I got a bit nervous and I can not find a diagram for these batteries and how to connect them.
Does anyone have any idea?