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3.4 Low Battery Indication
The unit continually monitors the battery level during use. A warning is
provided when the remaining capacity of the battery reaches
approximately 10% of the full capacity. The warning is in the form of two
short beeps of high and low pitch in Speech and Tone Modes or three
very short vibration pulses and is provided at the end of each
denomination announcement.
When the remaining capacity of the battery reaches approximately 5% of
the full capacity, the warning tone changes to four short beeps of high and
low pitch at the end of each denomination announcement. In Vibration
Mode, this warning is in the form of three very short vibration pulses. The
5% and 10% warnings are the same in vibration mode.
If the battery level is deemed to be critically low and insufficient to permit
accurate operation, the unit emits 3 short beeps of different pitch or three
short vibration pulses and shuts itself off. This can happen when the unit
is first switched on or when the volume or output modes are changed. If
one of the buttons is kept pressed when the battery is critically low, the
unit will emit an intermittent series of beeps. You should not attempt to
operate the unit once it starts giving critical low-battery warnings and
should immediately replace the battery with a fresh one.
Battery Warning and Volume Level
Battery life and low battery warning signals are highly dependent on the
output mode and volume level at which the device is being operated. You
may therefore get low-battery warnings at volume level 3 for instance, but
if the volume level is adjusted to lower levels, the warnings may stop.
This is because higher volume levels and Vibration Mode consume more
power
When the battery weakens, the unit will automatically reduce the volume
level in Speech Mode to allow continued use and to extend the life of the
battery. Therefore, even if you attempt to set a higher volume level, the
unit will limit the volume to the maximum level possible with the weak
battery. To restore full volume, the battery must be replaced.
