How to replace a battery in One Touch can opener.

I have this can opener that a friend got me when The Sharper Image was going out of business. But one problem. Its battery is dead and I cannot figure out how to open the battery compartment. What is frustrating is that I did it once; it took quite a while to figure it out and I foolishly didn’t write it down. I have no spent 15 minutes on it without success. Has any Doper figured it out and can they share the secret.

What a strange product. Works great, but this design flaw.

Does this help?

There’s also a link to a PDF with illustrations.

Yes it helps. The crucial word is “slide”. I was trying to pry.