Battery Charging, Removal and Replacement Installation
2-4 PN: 10585-00001 Rev. P ML2437A/38A OM/PM
may be checked by fitting the battery in the power meter and pressing the following
front panel keys
a. Press [System] > [more] > [more] > [Battery] > [STATUS].
b. The remaining capacity is shown as a percentage of full charge.
5. An acceptable level of charge is defined by the number of hours the power meter will
operate with the charged battery. Typically this is 4.5 hours with the display backlight
on, and 9 hours with the backlight off. The percentage of charge is a guide not a
specification.
6. The power meter can operate with two types of battery.
• Duracell DR36 2800 mAh
• Energizer NJ1020 3500 mAh
The NJ1020 has 25 % more capacity than the DR36.
For the DR36, 80 % of charge is approximately 4.5 hours operation (backlight on).
For the NJ1020, 66 % of charge is approximately 4.5 hours operation (backlight on).
7. If a battery repeatedly charges to less than 50 % it may be possible to recover some of
the lost charge capability. This is achieved by completely discharging the battery and
then recharging it 5 times. The best way to discharge the battery is to disable the auto
off function so that the power meter will operate until automatically shut down.
Battery voltage. Press the following keys to set auto off to no:
c. Press [System] > [more] > [more] > [Battery].
d. Press [AUTO] to change the AUTO power off states to “Disable”.
The ideal battery temperature ranges are:
• Discharging: -20 to +50 C (-4 to +122 F)
• Charging: 10 to +45 C (+50 to +113 F)
Note that charging will be inhibited if the temperature falls outside these limits.
To remove the battery, first disconnect any AC or DC input line power. Open the battery
compartment as illustrated and remove the battery. Replace the battery with an identical
battery or with an equivalent as recommended by an Anritsu Service Center. Ensure that the
battery is correctly connected and that the battery compartment cover is securely fastened.
Note
To avoid excessive heat build up, always remove the ML243xA from the optional
soft-sided carrying case (D41310) before selecting fast charging.
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