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IT4nextgen > How To > How to Change UPS Battery Yourself [DIY Steps]

How to Change UPS Battery Yourself [DIY Steps]

Last Updated July 2, 2018 By Subhash D Leave a Comment

Can we change the battery of a UPS ourselves at home? We often call a computer technician for the jobs that we can do ourselves by following the step-by-step instructions with little care. Changing the internal battery is no big deal and we can easily change it. There are two types of UPS that include Offline and Online UPS. Among the two, it is the off-line UPS that we use at home or at our office and is easy to open. There is only one battery of wattage 500 or 650 VA in theUPS and is of 12 Volts and 7 AH rating. You can easily get the battery from a local computer store or order it from an online store like Amazon (check Price).

When is the Right Time to Change the Battery:

In normal condition, when the Mains supply is cut, your equipment still works for some time due to battery of UPS. If your equipment gets OFF when the Mains power is cut, it means your battery is exhausted and its time to change the battery. The normal life of a battery is around 1 – 2 years depending from brand to brand. We will teach you how to change the battery yourself at home and there is no need to call service engineer.

Steps to Replace UPS Battery

For the illustration purpose, we are using APC brand 500 VA offline UPS. The steps needed to change the battery will be more or less the same in other similar UPS systems.

  • Step 1: Open the screws from back-side.

back-side of UPS

  • Step 2: After opening cover, you will see the inner-view.

internal view of UPS

  • Step 3: You will notice that battery is held on to its position by a clamp so open this clamp by removing the screws on its both sides.

image showing holding clamp with hand

  • Step 4:  Open the RED and BLACK cables from its thimbles as shown below:

ups-battery-connections

  • Step 5: Take out the battery from UPS.

replace UPS battery

  • Step 6: Insert New Battery, connect Black (ground) and Red(+12 V ) cables onto battery terminals and re-mount the battery holding clamp.

image showing opening screws with screw-driver

  • Final Step: Close the cover and install screws opened in step 1.

Restore Battery Backup of UPS


So now you are familiar with the internal components of the UPS and know how to change the UPS battery. This will also resolve the problem of not getting battery backup from the UPS. In rare cases where the backup problem is not resolved by changing the battery, you need to get the charging circuit in the electronics card to be checked from the authorized service center

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