When To Replace Or Recharge The Battery - Symbol Series 3800 Reference Manual

Series 3800 Product Reference Guide

When to Replace or Recharge the Battery

The Series 3800 terminals provide two types of indicators to notify you when battery power
is running low: warning messages and modified cursors. These indicators may be changed or
disabled by an application.
LOW BATTERY - When the battery is low, the cursor changes as shown in Table 6-
!
1. If ERR300 is loaded, the message LOW BATTERY also appears. At this level the
terminal continues to operate, but there is probably less than 1 hour of usable power
left.
VERY LOW - When the power is very low, the REPLACE CELLS message appears
!
and the system powers off. Replace an alkaline battery or recharge a NiCd battery
before attempting to use the terminal. If the battery is not immediately recharged or
replaced, data may be lost.
Keyboard State
Unshifted
Shifted
Momentary Shifted
Momentary Unshifted
Control
Function
Backup Batteries
To prevent data loss during battery replacement, the terminal utilizes a lithium battery as a
backup. The backup battery provides sufficient power to preserve memory contents for
approximately 15 minutes while the primary battery is replaced. The backup battery does not
provide enough power to operate the terminal. On receiving a low battery message, replace
or recharge the primary batteries immediately.
6-2
Table 6-1. Cursor Indicators
Cursor Character
(inverted caret)
(caret)
(up arrow)
(down arrow)
c
(underline c)
f
(underlined f)
Low Battery
(inverted solid caret)
(solid caret)
(solid up arrow)
(solid down arrow)
(inverse c)
(inverse f)