DDN Storage SFA7700 Series, How-To Manual

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© 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 20
Day Code Day Code Day Code Day Code
1 1 9 9 17 H 25 P
2 2 10 A 18 I 26 Q
3 3 11 B 19 J 27 R
4 4 12 C 20 K 28 S
5 5 13 D 21 L 29 T
6 6 14 E 22 M 30 U
7 7 15 F 23 N 31 V
8 8 16 G 24 O
Table 3 – Battery pack day codes
Using the example in figure 23 above, where the serial number is USPLE000395RR009. The date of
manufacture follows ‘000’ and is represented as ‘395.’
Y M D
3 9 5
2013 September 5
Table 4 – Calculating the date of manufacture
Breaking down this number in table 4, the manufacture date is September 5, 2013.
Later versions of the battery packs include a human-readable form of the date in addition to the
encoded date (Figure 24) .
Figure 24 – Human-readable date
.