ETS-Lindgren HI-4457 Isotropic Magnetic Field Probe (Archived) - Manual (Page 15)

Page — 10 HI n 4457 Manual
Battery 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 -20 °C to +65 °C (-4 °F to +140
°F), operating the probe 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 n 4457 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 Holaday Customer
Service for assistance.
Archived 4/2/10