A true motherboard battery is used to store data when the PC goes into standby mode — that way it’s not lost if power is interrupted. As such, these batteries tend to have a much longer lifespan than the traditional button-cell watch batteries, which were used in some older motherboards and quickly became notorious for not holding a charge well after even a few months’ use — especially if they were stored in extreme conditions (like near a heater or mouse) or just plain forgotten about.
Lifespan Of The Replacement Batteries
The lifespan of the replacement batteries seems to vary widely — they tend to last around two years with just
Lithium Battery Lifespan
A typical lithium battery would last as little as 1-2 years, depending on the type of motherboard you have. It’s a good idea to know what kind of motherboard you’re dealing with in terms of the lithium battery because they are replaceable.