ESI-500
Pilot’s Guide 1-7
Operation
Specications (Continued)
BATTERY PERFORMANCE
Capacity: Provide at least 1 hour of power backup if
maintained and charged.
Capacity Minimum: 1 hour when tempera-
ture is -20°C to +60°C (-4° to +140°F).
Battery, Discharge
Temperature:
< +65°C ( < +149°F)
Battery, Charging
Temperature:
Between +5°C and +40°C (+41°F and
+104°F)
Battery Availability: Battery may not be available when battery
temperature is <-20°C or > +60°C (<-4° or
<+140°F).
Storage or operation in extreme high tem-
perature >+90°C (>+194°F) may cause the
chemical fuse in the Battery Pack to perma-
nently disable the battery.
Scheduled
Maintenance:
Battery calibration once a year.
Subject to requirements of 14 CFR 91.411.
Service Life: The ESI-500 has unlimited service life.
The battery has approximately 5 years of
service life; provided that the procedures for
maintenance are followed as detailed in the
Battery Capacity Calibration Procedure.
Shelf Life, Battery: The battery has a 5 year shelf life. The shelf
life is shortened if the battery is stored at
temperatures greater than +21ºC (+70ºF).
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