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
FIGURE 4-1 and FIGURE 4-2.
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
FIGURE 4-1, 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.
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