ETS-Lindgren HI-3637 VLF Magnetic Field Meter - Manual (Page 22)

Page — 14 HI n 3637 Manual
Charging Procedure
Step 1. Verify that the battery charger is set
correctly for the AC voltage in your area.
Step 2. Plug the charger into a suitable AC source.
Step 3. Set the meter switch to OFF. Insert the plug
on the charger cable into the meter's ¼ inch
stereo phone jack. The indicator on the
charger lights up only when the
instrumentation/readout package is
connected.
NOTE:
The rotary selector switch must be in the OFF
position for the battery to charge.
Step 4. The battery is now charging. This may take
up to 16 hours, depending on how deeply
the battery is discharged.
Charging Considerations
Recharge the battery using either the standard trickle
charger or the optional quick charger (See Table 5 n 2).
Recharging a fully discharged battery will take up to 16
hours with the trickle charger or one hour with the quick
charger.
Charge time can be reduced only by increasing the
charging current. If this higher current level is not
monitored carefully and charging stopped at the proper
time, the battery may be permanently damaged. Holaday
Industries offers an optional one-hour quick charger,
developed in cooperation with a NiCd cell manufacturer.
This charger is microcomputer controlled and can safely
recharge the NiCd battery (at the maximum rate) in one
hour. It uses an algorithm to determine full charge,
allowing a battery in any state of discharge to be brought
to full capacity without overcharging.
There are a number of chargers available for this type of
NiCd battery. Some do a very good job of charging the
battery, others sacrifice battery life for decreased charge