IBM 2145UPS-1U Hardware Installation Manual page 157

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Figure 79. The 2145 UPS-1U internal battery connector with protective tape
5. Connect the internal battery connector. Each end of the keyed connector has
two wires: one red (+) and one black (−). Join the black wires and the red wires
together.
Note: A small amount of arcing might occur when connecting the batteries.
This is normal and does not damage the unit or present any safety
concerns.
Figure 80. The 2145 UPS-1U internal battery connector
6. Reinstall the front panel. You might need to move the sliding section on the
front of the 2145 UPS-1U to the closed position first.
7. At the back of the 2145 UPS-1U, plug the 2145 UPS-1U main power connector
into the power socket (
standby mode, so all indicators are off.
It is recommended that each 2145 UPS-1U for an I/O group is connected to a
different power source.
1
in the following figure). The 2145 UPS-1U is in
Appendix B. SAN Volume Controller 2145-4F2
119