Help me in analyzing the circuit diagram of 12v dc UPS!

[Ganeshrnet]

I've designed a 12v DC UPS.. Anyone good at electronics kindly analyze the circuit i've designed in the image tagged,,, If you feel any problem, kindly help. Also please check for the values of the components used..
Is there any quick transistor switch by which I can replace the BC148B and SL100? as all know the ups need to be very quick... Please help..

 

[Resqueline]

It doesn't look good. You're also sending unlimited charging pulses in excess of 20V into the battery. What kind of a battery is it, and what is the circuit meant to supply?