ASUS X553M CMOS battery replacement

[maxrussell]

The system clock for an ASUS X553M keeps getting out of synch. It isn't the time settings in Windows, as this is set to update from Internet time.

I've tried looking in the case for the CMOS battery to replace it, but can't locate it. Haven't found anything useful via search either.

Has anyone used one of these laptops / aware of where the CMOS might be (if it actually has one)?

thanks