ETS-Lindgren HI-4460 Graphical Readout (Archived) - Manual (Page 50)

50 | Operation
When the battery is being charged (with the HI-4460 turned off), power is still
being drawn from the battery to maintain the system monitoring features of the
HI-4460. This current being drawn from the battery may cause the battery
charger to prematurely indicate a fully charged unit. To continue to charge the
battery to full capacity:
1. Disconnect the battery charger from the HI-4460 for approximately
15 seconds.
2. Reconnect the battery charger to the HI_4460. The battery charging
sequence will continue to fully charge the battery. Reinitiating the
charge sequence in this manner will not adversely affect the ultimate
life of the battery.
Follow these steps if the HI-4460 is turned on while charging the
battery.
Should the battery become overly discharged (no display, for example), it may be
necessary for the charger to trickle charge the battery to a safe level to begin the
fast-charge sequence. This may take several hours if the battery is severely
over-discharged. During this time, the battery charger will indicate PENDING.
When a sufficient charge level is reached, the charger will automatically shift to
the fast-charge mode.
Because the HI-4460 is monitoring its operation even when off, there is a load on
the battery. This load and the self-discharge characteristic of a nickel-cadmium
(NiCd) battery will deplete the charge of the battery even when off. A typical
battery life in the off condition is typically 12-13 days. After this time, the battery
must be recharged. You may leave the HI-4460 connected to the battery charger
indefinitely with no effect on the ultimate life of the battery.
Battery Calibration
• When the HI-4460 battery level is highlighted, the battery must be
calibrated; see the battery charger manual for more information.
• If the battery is not calibrated after cycling, cycle it again to calibrate
the battery.
Archived 4/2/10