Here’s a Simple Trick That Can Give Your Dead UPS Batteries a Second Life

By: | March 19th, 2016

Many countries around the world are dealing with the problem of power crisis. The Uninterruptible Power Supply (UPS) is a popular tool worldwide to overcome frequent power outages. Being a cheaper alternative to generators, it is very common in developing countries.

The main cost involved in running a UPS is its batteries. Life of these batteries is quite limited and most batteries need replacement every 2-3 years.

Instead of throwing out your “dead” UPS batteries, you can give a second life to them by making use of this simple procedure:

Things required are Epsom salt (MgSO4), distilled water, a pair of gloves, and safety glasses.


  • Take about 2 cups of distilled water and add 2/3 cup of Epsom salt which is easily available in chemist shops.
  • Heat the solution until the Epsom salt is totally dissolved in the water. Now keep it aside to let it cool.
  • Carefully open the filler caps of the battery.
  • When the prepared solution of Epsom salt and distilled water is cooled to room temperature, pour this solution into each filler hole. Add an equal amount of solution into all filler holes.
  • Replace the filler caps and shake the battery. This will help in starting the reaction, breaking the crystallized sulphation inside the battery and dissolving the solution.
  • Now leave the batteries to charge in a well-ventilated area.

If you try this trick, you will notice that with every passing day the condition of the battery will start improving and in nine to ten days it will start giving its best performance.

Using this trick once every year will give extra life to your UPS batteries. But please do this procedure in a well-ventilated area and always abide by your battery’s manual.

Nidhi Goyal

Nidhi is a gold medalist Post Graduate in Atmospheric and Oceanic Sciences.

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