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instead, the battery will be charged again after a
charge circle.
NOTE: A new charge circle will begin as soon as an
external power is connected.
WARNING: If the instrument has rechargeable
circuit, DO NOT connect to an external power
when a non-rechargeable battery is installed.
Doing so will cause the burst of the battery.
: It indicates low power of battery if not
connect to external power; if instrument is
connected to external power, it means the
charging state.