Lenovo ThinkSystem DE Series Hardware Installation And Maintenance Manual page 114

Battery release latch
Step 6. Turn the controller canister over to confirm that the battery is installed correctly.
Attention: Possible hardware damage – The metal flange at the front of the battery must be
completely inserted into the slot on the controller canister (as shown in the first figure). If the battery
is not installed correctly (as shown in the second figure), the metal flange might contact the
controller board, causing damage to the controller when you apply power.
• Correct – The battery's metal flange is completely inserted in the slot on the controller:
• Incorrect – The battery's metal flange is not inserted into the slot on the controller:
Go to "Step 2: Install host interface card" on page 109.
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ThinkSystem DE Series Hardware Installation and Maintenance Guide for 2U Enclosures
Battery