BHT-805B2.1 “BHT Preparation” ProcedureFollow the steps below to prepare the BHT for use.2.2 Inserting and Charging the BatteryCartridge(Page 14) First insert and charge the battery cartridge.2.3 Wearing the Hand Strap(Page 21)Wear the hand strap at your wrist to prevent the BHTfrom being dropped.2.4 Initial Setup(Page 22)Set the calendar clock when the power is turned ON forthe first time.2.2 Inserting and Charging the Battery CartridgeThe battery cartridge is not charged when purchased and should therefore be charged prior to use.The chargers that can be use with the BHT are the communication units (CU-801, CU-811 and CU-821) and batterychargers (CH-201A, CH-851, CH-704 and CH-854).* The CH-201A and CH-704 are chargers to separately charge the battery cartridge on its own, while theCH-851 and CH-854 are stationary model (same type as CU (communication unit)) for directly chargingthe battery cartridge placed in the BHT.The charging time is approximately 3 hours.• The charging time is approximately 7 hours using the CU-821 with power supplied via the USB port.• This time will be reduced for a battery cartridge with low discharge capacity.Charging Precautions• Do not touch any terminal of BHT, battery, or charger by hand or stain them. Doing so could resultin a contact failure or prevent charging.• Never charge the battery near fire or in a high-temperature environment.High-temperatures may activate the charger’s protective device, preventing from charging, and leadto protective device damage, overheating, blowout or combustion.• Terminate charging if not completed even after the specified time has elapsed.• Do not use battery cartridges other than that specified by DENSO WAVE.12