Tripp Lite SmartOnline AG-0358 Series Owner's Manual page 7

Installation
5
Each battery tray uses a blindmate DC connector. Position each
battery tray so the red and black DC connector end is facing
towards the rear of the UPS and the communication port is
facing toward the front of the UPS. Starting with the right side
battery tray, insert the battery pack tray, making sure it
protrudes slightly from the UPS. Repeat for the left side battery
tray.
Note: For better connector access, attach the cables before the battery
packs are fully inserted into the UPS.
6
Connect the battery communication cable to each battery tray
and push the battery trays completely into the UPS.
7 Close the battery door and secure by tightening the captive
screws.
8 Reattach the front bezel to the UPS and secure with the screws
removed in step .
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