Symbol Technologies VRC 6940 - Manual (Page 23)

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VRC 6940 Product Reference Guide
Installation and the Internal Battery
A VRC 6940 terminal has an internal battery that powers the terminal if there is a temporary
interruption, disconnection, or fluctuation in the main DC or AC power. We recommend that
you save all data and close all applications before removing a terminal’s main power supply.
You cannot use the internal battery to operate the terminal.
A terminal’s internal battery may be depleted when you first install it. It charges itself from
the terminal’s main power supply (DC or AC). If the main power supply is stable, you can
plug in the terminal and use it immediately.
If the main power supply is not stable, there may be power interruptions that cause the
terminal to reset itself during its first few hours of operation. If the terminal resets itself, you
may lose unsaved data. To avoid this, we recommend that you plug in the terminal and allow
it to charge for two hours before using it.
It takes 48 hours to fully charge the internal battery. A fully charged internal battery can
maintain data for up to 72 hours if the unit is disconnected from its main power source. This
time is reduced if the radio mode maintains continuous communication with a host.
Note: Reliable terminal operation during power interruptions cannot be
guaranteed without a fully charged internal battery. If the internal
battery is not fully charged, a power interruption may cause the
terminal to reset itself and erase valuable data.