ETS-Lindgren HI-4433-STE Electric Field Probe - Manual (Page 25)

Operation | 25
Charging Procedure
Begin by plugging the charger into a suitable AC source. Next, set the
probe switch to OFF. Insert the plug on the charger cable into the
probe's CHARGER jack.
The battery is now charging. Charging may take approximately one
hour, depending on how deeply the batteries are discharged. When
charging is complete, the charger will automatically begin a trickle
charge and will continue to do so until the probe is disconnected.
Tips
NiCd batteries have several characteristics that can affect both their
performance and operating life. The following tips advise you how to
take advantage of these characteristics to get the most out of your
probe’s battery.
• Although NiCd batteries are rated for operation in temperatures
from -20ºC to +65ºC (-4ºF to +140ºF), operating the probe in
extreme temperatures will reduce operating time significantly. The
optimum operating temperature range for these batteries is +20ºC
to +30ºC (+68ºF to +86ºF).
• The battery in the HI-4433 probe does not require periodic deep
discharges to reverse the capacity depleting memory effect
caused by repeated shallow discharges; however, undercharging
can reduce battery capacity. Therefore, after the charging
procedure is complete, be sure that the battery is fully charged
before resuming field operation.
• If the battery exhibits low terminal voltage during charging, or if it
appears unable to acquire or maintain an appreciable charge,
individual cells in the battery may be shorted or damaged. If, for
any reason, your battery needs replacement, contact
ETS-Lindgren Customer Service for assistance.