Charging The Battery Cartridge - Denso BTH-300BW User Manual

5.5 Charging the Battery Cartridge

You can charge a rechargeable battery cartridge being loaded in the BHT.
Service Life of Rechargeable Battery Cartridge:
Lithium-ion batteries used in the rechargeable battery cartridge will gradually deteriorate during the
repeated cycles of charging and discharging due to its properties, even under normal use. When the
battery service period becomes shortened due to its deterioration even if it has been charged for the
specified hours, replace the battery cartridge with a new one. Generally, it is necessary to replace the
battery cartridge after it has undergone approx. 300 cycles of charging and discharging operation.
(1) Turn the CU-300 on. The POWER LED comes on.
(2) Place the BHT loaded with a battery cartridge onto the CU-300.
The BHT turns on the indicator LED in red and starts charging. The charging time is approx. 3 hours
(approx. 9 hours*).
(*When the CU-321 is powered from the USB host (computer) or USB hub)
Upon completion of charging, the indicator LED on the CU-300 lights in green.
(3) Take the BHT off the CU-300.
The charging time is approx. 3 hours (approx. 9 hours) if the "Charge the battery!" message is
displayed on the BHT. The battery cartridge not discharged so much will be fully recharged in shorter
time.
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