Hi all

            I require a schematic of Lead Acid Battery Charger with following Features

1. Charger Must be Transformer less

2. intelligent Fully automatic

3.Rapid charging Function

4.Pulse Charging operation.

I need it for multiple charging option i.e. 12 v ,24 v , 36v,48v, from 7 ah to 200 ah

Urgent requirement is for 48 v 20ah batteries.