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APC Back-UPS 450 battery Replacement

  1. APC Back-UPS 450 battery Replacement, Turn OFF and UNPLUG UPS: step 1, image 1 of 3 APC Back-UPS 450 battery Replacement, Turn OFF and UNPLUG UPS: step 1, image 2 of 3 APC Back-UPS 450 battery Replacement, Turn OFF and UNPLUG UPS: step 1, image 3 of 3
    • Turn off and unplug your UPS from wall power, then turn it upside down.

    • Pull the yellow tab loose, to disconnect the battery.

  2. APC Back-UPS 450 battery Replacement, Open case: step 2, image 1 of 3 APC Back-UPS 450 battery Replacement, Open case: step 2, image 2 of 3 APC Back-UPS 450 battery Replacement, Open case: step 2, image 3 of 3
    • Use a long number 1 Phillips screwdriver to remove 4 screws so you can open the case.

    • This may be difficult to find an appropriate screwdriver. You will also possibly need to gently pry between the two pieces of the case with a small flathead screwdriver to separate the two pieces of the case.

  3. APC Back-UPS 450 battery Replacement, Disconnect, remove old battery, & install new: step 3, image 1 of 2 APC Back-UPS 450 battery Replacement, Disconnect, remove old battery, & install new: step 3, image 2 of 2
    • Disconnect and remove the battery from the case.

    • Install the new battery and connect it, noting the red and black color coating.

  4. APC Back-UPS 450 battery Replacement, Reassemble and test: step 4, image 1 of 1
    • Reassembly is the reverse of removal.

Conclusion

To reassemble your device, follow these instructions in reverse order.

One other person completed this guide.

Lance Wessel

Member since: 08/31/10

530 Reputation

3 Guides authored

3 Comments

Use a #1;phillips head screwdriver.

I own an APC RN450M. A #2:phillips head screwdriver doesn't work with that 450 VA model. In fact it doesn't even fit in the screw holes.

But a #1;phliips head screwdriver with at least an 8 inch shaft woks fine.

Bob Hyman - Reply

Agreed with @bobhyman, a #1 Phillips screwdriver is what's needed, although something a little shorter than 8 inches is probably OK too (measure the height of the entire unit as an upper bound). It might not be super-easy to find one of these at a local hardware store, but I ended up ordering something on Amazon. Other than that this is a pretty easy replacement. Thanks!

bmah - Reply

I used a #2, but it was a skinny one.

The yellow battery shutoff clip is what gave me the most problem, it was really tight in there!

Crissa Kentavr - Reply

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