EF5XX Data Retention Description,
Continued
Using
PARAMS
Use the PARAMS local program (Chapter 4) to check the cause
of the battery maintenance error. You can use the PARAMS
command SHOW /BSS to show all BSS parameters. Except in
the case of deep discharge, use the battery test utility BATTST
to verify battery health when a "Battery Maintenance Error"
appears in the error log.
Running
BATTST
In addition, Digital recommends running the BATTST utility
(Chapter 4) at least once a year to condition and test the
batteries. If deep discharge occurs or the BATTST fails, please
call Digital Services to replace the battery.
Overtemperature
Errors
Overtemperature conditions are also logged to the error log by
BSS firmware. Frequent overtemperature conditions shorten
battery life. A battery replacement interval of less than three
years is recommended if frequent overtemperature errors are
logged to the error log.
Fast Charge
Circuit
The EF5XX employs a fast-charge battery charge circuit to
reduce exposure to multiple power failures. The battery charger
is capable of replacing 90% of a full discharge in 4 hours. After
the batteries are charged, the battery charger trickle charges
the batteries to maintain the charge level.
Continued on next page
5–5
