What type of lithium battery does the SBX 320 CPU require? The manual doesn't show it. An out of town site has lost some data so I want to be proactive and replace it when I am there.

Dave, I believe it is the same one that the STS & XTS use.

Now I could not remember if it had a flat battery or one like the XTS, but I do believe you are correct.

I'm looking at one right now. It's the traditional 1/2 AA battery used in the other systems. The Summit uses the flat battery with no battery switch (yikes).

Thanks guys. My mind went through the same forest! Yes, it is the one Ed and Larry said. Boy, I had thought for sure it was a flat coin battery. I guess I'm just too old too soon. But I had even asked our old friend Paul Hilliard and even he couldn't remember. So I guess I'm in good company.