Bird Technologies 5000-EX - Manual (Page 31)

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Chapter 4 Maintenance
Cleaning
Clean the Bird Digital Power Meter and its display
with a soft cloth dampened with mild detergent and
water only. Clean sensors with a dry cleaning solvent
that leaves no residue.
Charging Batteries
Fully charged batteries provide about 20 hours of con-
tinuous operation with the Bird WPS, 50 hours with
other sensors. Charging time is typically 8 hours using
the ac adapter. The batteries charge whenever the
DPM is connected to ac or dc power sources, using
either the ac Mains adapter or the automobile ciga-
rette lighter adapter. When the external adapter is
connected, the battery level indicator will blink until
the battery is fully charged. When using the internal
batteries, the indicator will be on continuously and the
black bar will show the battery change remaining. The
unit will charge with its power turned either on or off.
 Note: For optimum battery life, only
charge the batteries after the battery level indi-
cator empties completely and begins to blink.
CAUTION
Do not use harsh or abrasive detergents for cleaning.