Battery allowed to discharge and Date/Time settings lost

If the computer has an internal cell it is used to retain computer settings, but it cannot retain them for very long which is why those settings are lost. However, they are easily re-configured once the battery is charged.

I had the same problem; I let it go, as it seemed to be fine after charging.

Now I've just started up with a full charge - and had the same problem!
Does anyone know if the date & time etc settings are kept from a seperate battery (one of those tiny lithium jobs) or if it uses a "trickle" off the main battery? Has anyone else experienced this?

I will call support for this as the machine's only 3 months old.

Insight appreciated...!