simple charger

It's been slow going to design the PIC-controlled four battery SLA charger and monitor that I want to make, and I came up with an all-analog design that is simple, cheap, and hopefully sufficient for charging a string of four 12V SLA batteries. Here is a simulation of the basic circuit: The...

I have an idea for a simple charger that might reduce the overall conversion cost. I base my idea on the voltages available from typical charge points: 110 and 220. Smaller vehicles like motorcycles and VWs would be built around the 110 volts and larger vehicles would be built around 220. I am...