I had some trouble removing the battery cover. It took brute force, and I was afraid I would break it, but it held up. Other than it was very easy to set up and has made a massive positive difference in the tangle of wires that used to be under my desk. I am relieved to know that my computer equipment is protected.
I suppose I will now really know until the power goes out, but it appears to be working well for now. Since I had changed from a desktop computer and monitor to a laptop, my electrical load requirements had decreased and I figured I could move downward from my present APC, a BX1300G, to this one that I bought, the BE650G1, which only has one battery instead of 2 like the BX1300G. That way when I need to replace the battery, it is only one instead of two. As it turned out, I decided to move the BX1300G over to the TV, cable box, Blue Ray player, etc., which I presently had on just a standard surge protector. All worked out well, I would say.