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Thank you for purchasing the LSI MegaRAID LiON (lithium 
ion) intelligent Battery Backup Unit 01 (iBBU01). The iBBU01 
is designed for use on MegaRAID SAS RAID controllers. 
It protects the integrity of the cached data on a MegaRAID 
controller for up to 72 hours in the event of a complete AC 
power failure or a brief power outage.

LSI provides a family of MegaRAID intelligent battery backup 
units (iBBUs) for use with its high-performance MegaRAID 
RAID controllers. The LSI MegaRAID iBBUs provide an 
inexpensive alternative to using an uninterruptible power 
supply and a second level of fault tolerance when used in 
conjunction with an uninterruptible power supply.

This quick installation guide explains how to install the 
MegaRAID iBBU01 on the following controllers:

MegaRAID SAS 8308ELP

MegaRAID SAS 8344ELP

MegaRAID SAS 84016E

MegaRAID SATA 300-8ELP

MegaRAID SATA 300-8XLP

Please take a few minutes to read this Quick Installation 
Guide before you install the iBBU. For more information 
about the iBBU01, refer to the 

Intelligent Battery Backup 

Units for 1078-based MegaRAID Products User’s Guide

 on 

your 

MegaRAID Universal Software Suite 

CD. 

O v e r v i e w   o f   t h e   I n t e l l i g e n t   B a t t e r y  
B a c k u p   U n i t

An 

intelligent

 BBU has built-in functionality to charge the 

battery pack automatically and to communicate battery 
status information such as voltage, temperature, and current, 
to the host computer system.

The iBBU01 does not connect directly to the MegaRAID 
controllers. Instead, it uses the supplied 20-pin, 12-inch 
cable to connect remotely to a controller. The iBBU01 must 
be mounted inside the chassis within 10 inches of the RAID 
controller. 

Because server and workstation chassis vary from vendor to 
vendor, there is no standard mounting option that is 
compatible with the various system configurations. The 
LSIiBBU01 battery kit contains only the battery and the 
cable, allowing VAR’s and chassis manufacturers to 
customize the location of the remote battery to provide the 
most flexibility within various environments.

The iBBU01 combines a battery pack with a daughtercard. 

Figure 1

 shows the top view and the bottom view of the 

iBBU01, the M2.50-0.45 x 5mm screws, and the 6mm 
standoffs. (The “top” side is the side that you can see after 
you install the iBBU on the RAID controller.) 

Note:

The LSI part number for the daughtercard is 
25126.

Figure 1 Intelligent Battery Backup Unit 01

1 - Battery Pack Harness

2 - J1 Battery Pack Harness Connector

3 - J2 Board-to-board Connector

4 - J5 20-pin In-line Cable Connector

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S A S   8 3 4 4 E L P   R A I D   C o n t r o l l e r

This section documents the installation of the iBBU01 on the 
MegaRAID SAS 8344ELP RAID controller. You can install 
the iBBU on the other RAID controllers in a similar manner. 

Follow these steps to install the iBBU01 remotely to the SAS 
8344ELP RAID controller.

Step 1

Ground yourself, and remove the iBBU01 from 
the package.

Step 2

Use the three Phillips-head screws that are 
provided to secure the iBBU01 to the 
motherboard or the server chassis.

Step 3

Insert the battery pack harness connector at the 
end of the battery pack harness into the J1 
connector on the bottom side of the iBBU01.

MegaRAID

®

 iBBU01 LiON Battery 

Backup Unit

Quick Installation Guide

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