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Y is for Years

Y is for Years

Here the battery rack sits next to the UPS it's supporting

Welcome to a regular feature on the Powertecnique blog. Every Monday we talk you through an A-Z of the terms you hear associated with critical power supplies. In this latest post we’ve reached the letter Y. Y is for Years.

Years (as I hope we all know by now) are a measurement of time. 365 days make up a year and these days are grouped into months, with 12 months making a year. I’m hoping you’ve followed so far! This isn’t that technical….

Why are years important to critical power supplies? Because batteries have a battery life and the length of this life is advertised with the battery, in years.

Typically UPS batteries have a design life of either 5 or 10 years depending on which battery you choose. It’s worth noting that there is a big difference between the battery design life and the service life. The service life is the actual life obtained from the battery before its performance starts to rapidly decline. 

To maintain the highest battery performance and runtime for your UPS, we recommend replacing batteries at 3 to 4 years for a battery with a design life of 5 years and 7 to 8 years for a 10 year design life battery. Depending on the conditions that the battery is kept and maintained at will ultimately determine when replacement is required.

Batteries are very prone to changes in temperature and in order to establish their advertised lifespan and autonomy, they need to be kept at between 20 - 25 degrees centigrade and checked regularly. This begs the question, how do you check a battery? Quite simply, this is done by carrying out a battery resistance test.

If you regularly check your batteries and keep them in a good environment then the chances are that they will last for longer and logic says they will be better placed to support your load at your time of need! Just remember to ask what the design life of the batteries is before you buy your next UPS.

If there’s a topic you’d like covered in our A-Z why not get in touch via twitter. Our handle is @powertecnique.

Author: Owen McIntyre

27/02/2014 12:17:00
Listed in : A-Z of Critical Power  
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