Real-Time Clock Battery; Figure 1-20 Real-Time Clock Battery - Toshiba Infinia 7130 Series Maintenance Manual

Real-Time Clock Battery

A lithium battery, installed in a socket on the system board, provides power for the real-time
clock and CMOS RAM.
The battery has an estimated life expectancy of three years. When the battery starts to
weaken, it loses voltage. When the voltage drops below a certain level, the system settings
stored in CMOS RAM (for example, the date and time) may be wrong. If the battery fails,
replace it with an equivalent battery.

Figure 1-20 Real-Time Clock Battery

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