IBM 11000 VA LCD 5U Installation And Maintenance Manual page 34

3. Loosen the thumbscrew on the right battery retention bracket 1 , slide the
4. Connect the three internal battery connectors.
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11000 VA UPS and 11000 VA EBM: Installation and Maintenance Guide
bracket to the left 2 , rotate the bracket out 3 , and then remove it.
R
Note: A small amount of arcing might occur when you connect the batteries.
This is normal and does not damage the unit or present any safety concern.