Battery Voltage Level on the Status Indicator Line The battery voltage level is always displayed on the status indicator line.
(For details, refer to Section 2.2.2 "Status Indicators on the LCD.")
Low battery warning
If the battery output voltage drops below a specified lower level limit when the BHT is in operation, the
BHT displays the following message for approx. 2 seconds and beeps three times. After that, it will
resume previous regular operation.
Solution: The battery cartridge will need to be recharged before long. Recharge or replace the battery
cartridge as soon as possible.
Shutdown due to low battery
If you continue to use the BHT without recharge or battery replacement after the message above
appears, the battery output level lowers to the extent the BHT can no longer operate. The BHT displays
the following message, beeps five times, and then turns itself off. Depending upon the battery level, the
message may not appear or the beeper may not sound five times.
Solution: Recharge or replace the battery cartridge.