IBM RS/60000 Series Site And Hardware Planning Information page 199

Capacity will gradually decay from fresh battery value to the aged battery value, with the amount of decay
shown being worst case. The system will diagnose a "failed battery" if the capacity falls below the aged
battery level.
Typical Machine Holdup Time vs. Load in Minutes (Fresh Battery)
Machine 3 kW
Load
IBF N R
Configuration
1 BPR 7.0 21
2 BPR 21 50
3 BPR 32 68
N = non-redundant, R = redundant
Typical Machine Holdup Time vs. Load in Minutes (Aged Battery)
Machine 3 kW
Load
IBF N R
Configuration
1 BPR 4.2 12.6 1.3
2 BPR 12.6 30
3 BPR 19.2 41
N = non-redundant, R = redundant
6 kW 9 kW
N R N R
2.1 7.0
7.0 21 4.0 11
12 32 7.0 21
6 kW 9 kW
N R N R
4.2
4.2 12.6 2.4 6.6
7.2 19.2 4.2 12.6
12 kW 15 kW
N R N R
2.1 7.0
4.9 12 3.2 9.5
12 kW 15 kW
N R N R
1.3 4.2
2.9 7.2 1.9 5.7
Chapter 2. Physical Characteristics of Systems
18 kW 19.5 kW
N R N R
2.1 7.0 1.7 6.5
18 kW 19.5 kW
N R N R
1.3 4.2 1.0 3.9
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