# The battery-backup cache device on controller [number] needs a new battery.

## Explanation:

The battery and battery-backup cache are malfunctioning because of one of the following:

- The battery and battery-backup cache device are installed improperly.
- The battery is low, and the battery-backup cache device must be replaced.

## Action:

Verify that the battery and battery-backup cache device are installed properly. If they are installed properly, contact your IBM service representative.

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