Model 3411-B Advanced Control Unit Appendix B–7
B. MAINTENANCE
BATTERY CHARGING
With fully charged batteries, the gauge will remain operational for
approximately eight weeks under normal (8-hour day) conditions.
If the batteries become discharged, the following message will be
displayed on the gauge:
*** WARNING! ***
Battery Low!
When this display appears, there are a few hours remaining before
the battery must be recharged. In an emergency, a 30-minute
recharge with the dc or ac charger gives several hours of use.
Although batteries cannot be “overcharged,” rechargeable batteries
have a “memory” and repeated unnecessary recharging will shorten
the battery life. If possible, run the batteries down before
recharging.
NOTE
Batteries should not be recharged unless the Battery
Low! indication is displayed!
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