changing batteries in APC Smart-UPS 1500 Rack-mount

Changing the batteries in a APC Smart-UPS

(SUA1500RM2U)

(any of the following pictures can be made much larger by clicking on them)

Begin by removing the black face cover (no screws).

2. Four new batteries, ready to go.

Look for the thick, red & black pair of wires with a little lanyard on them.  This is to pull and disconnect the battery supply cord.

Pull on the lanyard which will disconnect the batteries.

Slide the battery tray all the way out. 

This will be heavy! (about 20-30 LBS)

Disconnect the individual battery connectors.  Be careful to keep them in order so they will be placed back on the right spots when you put new batteries in.

Install new batteries and then place tray back into the APC.  Plug in the yellow supply cord and power on the unit.

You can find new batteries between $20-30 each (when you include shipping).  One of the part number is 

SUA1500R2X138 (there may be alternates)