ETS-Lindgren HI-4416 Numeric EMF Readout Unit - Manual (Page 24)

24 Operation www.ets-lindgren.com
C HARGING P ROCEDURE
1. Plug the charger into a suitable AC source.
2. Make sure power to the readout is OFF. Insert the plug from the
charger cable into the readout's CHARGER jack.
3. The battery pack is now charging. This may take approximately 1 hour,
depending on how deeply the batteries are discharged. When charging
is complete, the charger automatically goes into a trickle charge and
will continue to do so until the probe is disconnected.
B ATTERY T IPS
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 readout’s battery.
 Although NiCd batteries are rated for operation in temperatures from
-20 °C to 65 °C (-4 °F to 140 °F), using the System Readout in extreme
temperatures will reduce operating time significantly. The optimum
operating temperature range for these batteries is 20 °C to 30 °C
(68 °F to 86 °F).
 The battery in the HI-4416 does not require periodic "deep discharges"
to reverse the capacity depleting "memory effect" caused by repeated
shallow discharges. However, undercharging can reduce battery
capacity.
 If the battery in the HI-4416 appears unable to acquire or maintain an
appreciable charge, individual cells in the battery may be shorted or
damaged and the battery should be replaced. If, for any reason, your
battery needs replacement, contact ETS-Lindgren Customer Service
for assistance.