Denso BHT-500B User Manual page 35

5.
Check the battery cartridge terminals and direction
indication on the BHT, and insert the battery
cartridge in the direction shown by the arrow.
Pull the battery pull strap upward as
 Point 
shown on the right to remove the battery
cartridge easily.
6.
Close the battery cartridge cover (1) and return the
battery cover lock (2).
Ensure that the battery pull strap is not
 Point 
jammed by the cover.
 Point  The indicator LED flashing in red indicates the following causes. The proper action stated below
must be taken.
・Abnormal temperature of the battery cartridge is detected.
・Charge the battery cartridge under the proper temperature (0℃~40℃)
・Avoid places where there are objects generating heat nearby or exposed to direct sunlight.
・Terminate charging and replace the battery cartridge if there are no objects generating heat
nearby.
・The charge terminals contact failure
・Wipe any dirt or dust from the charge terminals as described in "6.3 Daily Maintenance".
・The battery cartridge is broken or the battery life has ended.
・Replace the battery cartridge.
The BHT is equipped with a back-up battery used to back-up the internal memory and calendar
 Note 
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.
Barcode Handy Terminal
Pull up
Be careful not to
jam the strap.
Terminal
19