UPS is installed in our home the problem is that the main power supply line is come only for 1 hour and go for three hours.so the ups battery is not fully charge during 1 hour.so i need a such type of circuit that charge the battery within 30 mints.

 

We need the size of the battery to know how much electricity it will hold.

 

12 Dc 180 Ampere

 

The conversion efficiency of a lead acid battery is 2/3rds. 180 amp hours of battery is as large as 2 large car batteries and will require 270 amp hours to charge from empty. The charger will have to put out 270 amps to get the job done in one hour.

Somehow, I doubt your battery is 180 amp hours, but now you know the math.