Chapter 9. Battery State; Outline; Battery Voltage Acquisition; Battery Voltage Icon - Denso BHT-700-CE Reference Manual

Chapter 9. Battery State

9.1. Outline

The battery status can be ascertained using the following methods.
(1) Battery status acquisition

(2) Battery voltage icon

(3) Low battery voltage warning message display

9.2. Battery Voltage Acquisition

The BHT_GetPowerStatus function can be used to ascertain whether the BHT is on the CU, and acquires
the battery level, battery voltage, and battery type.
9.3. Battery Voltage Icon
The battery voltage status is indicated with the icons below if the battery voltage status display is
authorized.
Battery voltage level
Level Voltage
High 3.9 V or higher
3.7 V or higher and
Medium
less than 3.9 V
3.6 V or higher and
Low
less than 3.7 V
3.5V or higher and
Warning
less than 3.6 V

9.4. Battery Voltage Warning

If the output voltage of the battery cartridge drops below the specified lower limit, the BHT displays the
Level-1 message "Battery voltage has lowered." on the LCD and beeps three times. After that, it will
resume the previous regular operation.
If the battery output voltage drops further, the BHT displays the Level-2 message "Charge the battery!,"
beeps five times, and then turns itself off automatically.
Battey Voltage
Icon
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