ESI-2000
Pilot’s Guide2-6
Basic Operation
BATTERY CAPACITY METER CALIBRATION PROCEDURE
(Refer to Figure 2-9)
A controlled discharge of the ESI-2000 is required annually to maintain
accuracy of the capacity meter. Take the following into consideration
before performing the calibration procedure:
Read the entire calibration procedure prior to starting.
The calibration procedure can be performed with the ESI-2000
installed on the aircraft.
The calibration procedure can be accomplished by the pilot/
operator whenever a battery capacity meter calibration is needed.
The factory recommends the calibration procedure be performed
anytime a battery is replaced or an ESI-2000 is replaced;
however, the calibration can be performed at anytime and as
often as desired in order to align the calibration with scheduled
maintenance inspections or to accommodate temperature and
time requirements.
The calibration procedure can take up to 8 hours to complete.
To assure compliance with the temperature limits of the
calibration, if performing the calibration procedure on aircraft the
factory recommends, in regions with hot climates, performing the
procedure during the cooler months of the year and in regions
with cold climates, performing the procedure during the warmer
months.
The battery discharge occurring upon entering the calibration
procedure menu selection is considered part of the calibration
discharge.
The accuracy of the battery capacity meter may degrade after about a
year of standby use or storage. The ESI-2000 alerts the operator when
a capacity calibration is required by displaying the following message
during startup for 90 seconds:
This message continues to be displayed at each start up. On day zero
(0) the “CAL DUE” battery indicator ( ) is shown on the screen
during normal operation. The message and “CAL DUE” battery indicator
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BATT CAL REQUIRED IN 28 DAYS
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