14
Battery Operation
9. Battery Operation *
The internal battery, when fully charged, provides enough power for
approximately ten ABI measurements.
An on-screen indicator shows the state of charge at all times.
Battery charging takes place when the unit is connected to the line (mains)
power. During battery charging, the battery symbol fi lls from left to right. The
time required to fully charge a completely discharged battery is approximately
two hours.
When the battery reaches a critically low level of charge such that further
use is not possible, the battery symbol will appear in outline, and will fl ash
continuously. The unit will then switch off automatically when the battery is
completely discharged.
If the battery is disconnected for any reason, it must be conditioned immediately
after re-connection. Refer to section 12.3.1 (h) for instructions. Failure to do this
will result in unreliable operation from the battery.
Power Save Functions
When operated from the internal battery, power save functions are enabled:
• After three minutes of no keypad use, the display backlight will switch off.
To switch backlight back on, simply press any of the buttons below the
display once.
• After ten minutes of no keypad use, the unit will switch off. To switch the
unit back on, press the power on/off button and hold for three seconds.
Note: Any results will be lost unless a printout has been produced.
* Depending on model
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