CMOS battery compartment - simple issue
CMOS battery compartment - simple issue
It seems the longer metal contact is usually positioned on top, not the bottom. You’ve noticed videos showing it placed on top of a lower contact, but your attempts to move it down caused damage.
The central metal part is meant to connect with the battery’s negative side, which you usually can’t see. The outside of the battery is positive: slide it between the terminals or put it on top, press lightly. The side contact acts like a spring, compressing to lower the battery and then firmly touching its side.