HP NetRAID Installation and Configuration Guide

Chapter 12 HP NetRAID-3Si Battery Backup Unit
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Table 12-1. HP NetRAID-3Si Battery Charge Time and Charge Rates
Fast Charge
Time
Fast Charge
Rate
Trickle Charge
Rate
Operating
Environment
6 hours 190 mA 28 mA 25°C - 35°C ambient
(77°F - 95°F ambient)
Battery Life
The HP NetRAID Series software warns you when the battery needs to be
replaced. Under normal usage, the battery should last twice the warranty period
of the HP NetRAID-3Si adapter. A new battery pack should be installed every 1
to 5 years.
Retention Time for Cache Memory
The Battery Backup Unit can preserve data in the HP NetRAID-3Si DRAM for
up to 40 hours. The retention time for cache memory varies with the number of
SIMMs installed, the number of chips on the installed SIMMs, the DRAM
memory size, and the DRAM manufacturer. The more SIMMs the adapter has,
the faster the battery drains.