377/377 FC/378/378 FC
Users Manual
6
Battery
XW Warning
To prevent personal injury and for safe operation
of the Product:
• The battery door must be closed and locked
before you operate the Product.
• Remove all probes, test leads, and accessories
before the battery door is opened.
• Replace the batteries when the low battery
indicator shows to prevent incorrect
measurements.
• When batteries are changed, ensure that the
calibration seal in the battery compartment is
not damaged. If damaged, the Product may not
be safe to use. Return the Product to Fluke for
replacement of the seal.
W Caution
To prevent damage to the battery:
• Repair the Product before use if the battery
leaks.
• Do not expose battery to heat sources or high-
temperature environments such as an
unattended vehicle in the sun.
• Always operate in the specified temperature
range.
• Do not incinerate the Product and/or battery.
The Product ships with the batteries installed. To replace batteries,
see Figure 1.
Figure 1. Batteries
AA
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