Replacing an APC UPS Battery

Replacing an APC UPS Battery
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If you have a Uninterruptable Power Supply for your PC or server, then you already know that the batteries eventually die.  If you want to make sure you have optimal uptime, then they should be replaced every three years, but you may be able to get away with five.

Recently the battery on the OCmodshop server UPS no longer held a charge and we ordered a replacement.  While physical installation is straightforward, you may run into a few problems.  Here are some things to consider when replacing the battery in your APC UPS.

Physical installation

First of all, you have to remove the old battery and install a new one.  Everything connected to the UPS should be powered off and you should unplug the UPS from the AC outlet and the UPS should be powered off.  Turn the UPS upside down and you will see some tabs to depress which will release a door and provide access to the battery.

Slide the battery out and disconnect the terminals.  Plug up the black wire (negative) to the black lead and the red wire (positive) to the red lead.  I do it in that order because that’s the order when connecting a car battery.  Make sure the leads are good and snug and then slide the battery inside and close the door.

Plug the cable back into your wall’s AC outlet.

On the next page we show you how to tweak some settings to make your life easier…

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