NVRAM backup batteryThe NVRAM backup battery installed in your system helps to retain the BIOS settings and configurationseven if the power is switched off.Replacing the NVRAM backup batteryPrerequisitesWARNING: There is a danger of a new battery exploding if it is incorrectly installed. Replace thebattery only with the same or equivalent type recommended by the manufacturer. Discard usedbatteries according to the manufacturer's instructions. See the safety instructions that came withyour system for additional information.CAUTION: Many repairs may only be done by a certified service technician. You should onlyperform troubleshooting and simple repairs as authorized in your product documentation, or asdirected by the online or telephone service and support team. Damage due to servicing that isnot authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthat came with the product.1. Ensure that you read the Safety instructions.2. Follow the procedure listed in Before working inside your system.3. Remove the following:a. system coverb. hard drive/SSDc. hard drive/SSD backplaned. hard drive/SSD cage4. If installed, remove the memory module.Steps1. Locate the system battery on the system.2. Hold the battery and pull it toward the positive side of the battery until the battery disengages fromthe connector.3. Lift the battery away from the system.4. To install a new system battery, hold the battery with the negative side of battery facing the negativeside of the battery connector.5. Place the battery into the connector and push the positive side of the battery until the battery snapsinto place.101
