IBM ServeRAID User Reference page 23

Statement 2
CAUTION:
When replacing the lithium battery, use only IBM Part Number 33F8354 or an
equivalent type battery recommended by the manufacturer. If your system has a
module containing a lithium battery, replace it only with the same module type made
by the same manufacturer. The battery contains lithium and can explode if not
properly used, handled, or disposed of.
Do not:
v Throw or immerse into water.
v Heat to more than 100° C (212° F)
v Repair or disassemble
Dispose of the battery as required by local ordinances or regulations.
ServeRAID-4Lx controller
The ServeRAID-4Lx controller has one independent SCSI channel connector,
Channel 1. This SCSI channel supports up to 15 physical devices.
Internal Channel 1
External Channel 1
Figure 3. ServeRAID-4Lx controller
You can attach internal SCSI devices to the internal Channel 1 connector. You can
attach external SCSI devices to the external Channel 1 connector. You cannot
attach internal and external SCSI devices to the same channel. For example, you
cannot attach devices to both external Channel 1 and internal Channel 1. The
ServeRAID-4 controllers do not support configurations that use both the internal and
external connectors on the same channel concurrently.
Note: The ServeRAID-4Lx controller uses the module (P/N 38L3386) containing a
lithium battery.
7
Chapter 1. Product information