Fluke 744 Fluke 744 Users Manual - Page 32
Battery Life, pack. The optional Ni-Cd battery Model BP7217 - specifications
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744 Users Manual Battery Life The calibrator senses which battery is installed (standard NiMH, or optional Ni-Cd model BP 7217). If the NiMH battery is installed, a battery gauge bar graph Z shows on the upper right of the display. If the Ni-Cd battery is installed, there is no battery level indication except for a low battery symbol b, that appears when it is time to charge the battery. Table 4 shows the typical operating time for a new, fully charged NiMH (Nickel-Metal Hydride) battery pack. The optional Ni-Cd battery (Model BP7217) provides approximately half the battery life of the NiMH battery. Calibrator performance is guaranteed to meet specifications until the battery gauge reads empty (Y or b). To replace the battery, refer to "Replacing the Battery" later in this manual for instructions. In the case of the Ni-Cd battery, for longest battery life and best performance, wait for b to appear before you charge the battery. Table 4. Typical Battery Life with Standard NiMH Battery Pack Operating Modes Backlight Off Measure, continuous Measure and source, with loop power on, continuous Typical intermittent operation 13 Hours 7 Hours >16 Hours Backlight On 12 Hours 6 Hours >16 Hours 22