Why UPS’s batteries gets damaged over the time?
In: Technology
All batteries wear out over time. They are bags of chemicals and those chemicals degrade. Recharging is supposed to reverse the chemical process that draining the battery produces, but it’s never a perfect reversal to get to the exact same chemical state each time.
UPSs can be especially hard because often the power demand is quite high, in terms of the number of amps/watts demanded out of the battery. That can be hard on the battery and it may not last as long as if it were under lower loads.
In most situations a UPS isn’t meant to have the battery drained, but just to hold the power long enough for either a clean shutdown of the systems, or to hold out for a backup power source (like a generator) to kick in and take over providing power. If you actually let the battery drain, you’re doing it wrong.
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