Chapter 4
Battery FRUs
4-3
4.3
Battery Dating on the Battery Labels
The battery modules display a serial number/part number label, whose placement
on the battery is shown in
and
.
Below the top bar code is a seven-digit code that indicates the place of manufacture,
followed by a dash (–), followed by a four-digit code that indicates the date of
manufacture, followed by a six-digit supplier-assigned serial number.
In
, the example date of battery manufacture is indicated by “0240,” where
“02” is the year of manufacture and “40” is the week of manufacture. If a battery
does not have a serial number/part number label, the manufacture date for the
battery is August 2002.
TABLE 4-1
Battery Status Indicators
Battery Display
Description
-----
Discharged; the battery is automatically recharged when it reaches this
state.
+----
Adequately charged to maintain cache memory for 72 hours or more in case
of power loss. Automatic recharging occurs when the battery status drops
below this level.
++---
Over 90% charged; adequate to maintain cache memory for 72 hours or
more in case of power loss.
+++--
Over 90% charged; adequate to maintain cache memory for 72 hours or
more in case of power loss.
++++-
Over 90% charged; adequate to maintain cache memory for 72 hours or
more in case of power loss.
+++++
Fully charged; adequate to maintain cache memory for 72 hours or more in
case of power loss.
