Denso BHT-805BW Operator's Manual page 26

Step 1 Charging
5
Place the BHT on the charger.
Point
After placing the BHT on the charger
when using the BHT for the first time or
when left unused for long periods of time,
do not remove from the charger for
approximately 10 minutes.
Note:
The BHT is equipped with a back-up battery used to back-up the internal memory and
calendar clock. The internal back-up battery is charged first when charging is
commenced.
Do not remove the BHT from the charger for at least 10 minutes when using the BHT for
the first time or when using after long periods of time.
6
The BHT indicator LED will change
to green when charging is complete.
Point
Charging takes approximately 3 hours.
Charging takes approximately 7 hours
when using the CU-821 with power
supplied via the USB port.
An only slightly discharged battery
cartridge should take this time to
become fully charged.
The LED illuminates in
Red and charging begins.
Red LED ON
Green LED
ON
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