Chosen Solution

where is the cmos battery on toshiba C55D-B5310

Ray Cisco it does not have one. This computer uses the regular main battery for this purpose. It also uses a capacitor for retaining some of the settings. That is the reason why removing the battery always results in a clock reset however settings such as CMS/EFI boot remain.

I found the template where it would have been, but, no battery or battery holder or any kind of connection. Who would have thunk????