10BHT-1400-CE Series2.1 PreparationFollow the steps below to prepare the BHT.2.2 Charging the Battery(Page 10) Charge the battery.2.3 Attaching the Hand Strap(Page 17)Attach the hand strap to prevent the BHT from beingdropped.2.4 Initial Setup(Page 19)Calibrate the touch screen and set thecalendar clockwhen the power is turned ON for the first time.2.2 Charging the BatteryThe battery cartridge is not charged when purchased.Charge the battery before using.To charge the battery, use only the CU (CU-AU1-14/CU-AR1-14/CU-AL1-14).The charging time is approximately 3 hours.• If the power is supplied via the CU-AU1-14 from the device connectedto the USB port, charging takesapproximately 12 hours.• A slightly discharged battery takes less time to fully charge.Charging Precautions● Do not touch the BHT, battery or charger terminals by hand or stain them.Failure to follow instruction may result in a contact failure or a charging error.● Never charge the battery near fire or in a high-temperature environment.High-temperatures may activate the charger protection device to stop charging, or lead to protection devicedamage, overheating, explosion or fire.● Stop charging if the charge does not complete after the specified time has elapsed.● Use only the dedicated battery specified by DENSO WAVE.