Decrease the level of the battery for UPS syatem

[eng_2009]

Hi,

I faced problem with the decrease the level of the batteries for UPS system and from time to time i filled the batteries but still the level decrease after one week...

what is the problem and solution؟

best regards,

 

[anorlunda]

If you had to fill them that sounds like lead-acid flooded batteries. Is that correct?

Gradual decrease in that type of battery is usually caused by sulphation. The cure is a special de-sulphating charge cycle, also called equalizing charge cycle. Only some chargers have that feature.

Another possibility is a cracked plate, but that would happen suddenly, not gradually.

 

[eng_2009]

yes it is lead-acid

 

[eng_2009]

there is no cracked plate

 

[anorlunda]

If it is lead acid flooded, then my previous reply about equalization charge is your answer.If it is lead acid sealed gel cell, then it can be easily damaged by charging it to too high a voltage. The UPS charging set point must be specific for gel cells.

 

[eng_2009]

it is on the float mode not on boost mode

 

[anorlunda]

You can float a flooded battery at 14.2 volts, but float a gel cell to 13.8 volts max. Which is it?

 

[eng_2009]

i have 60 battery cells connected in series
each cell 2.2 vdc
total voltage 132 vdc

 

[anorlunda]

Whoa, that is outside my experience base. I'll bow out of this thread. Hopefully, someone else can help you.