Powerman ups not charging to 100%


#1

Hi!
I have a powerman UPS and yesterday its fuse got melted and i replaced it with a new one. I havent noticed it before but today i noticed that the battery status never goes beyond 27%. I called an electrician and after checking it he told me that powerman ups never charges beyond 27% as he owns one and it never goes beyond 27%. Guys is it true? If not then please suggest me any reason for not charging beyond 27%. Besides this issue everything is working perfectly fine


#2

How old is the battery ?
What is the condition of battery wires / terminals ?
Any signs of corrosion / oxidation ?
Did the UPS showed 100% when it was installed new ?

This % charging indicator works by measuring the battery voltage.If backup time is OK, most likely the UPS internal measuring system is messed up and it is nothing to worry about.


#3

Thank you so much sir, apparently it is an issue with my ups display. As the backup time is still like it used to be.
My batteries are about a year old, in perfect condition, the terminals are working fine.


#4

How about this ? Did it ever show full 100% level ?


#5

Yes i remember it used to show 100% before it fuse got short. Still the backup time is same but the max charge it shows is 27%


#6

It will again go back to 100% for short time when you replace your batteries. Your % meter is probably calibrated for some other type of batteries.

So keep using it without any worries.