does anyone have a circuit schematic for a battery charger ,for chargeing 2 6 volt/ 4ah batteries wired in paraellel at the same time,also would like the charger to show 2 states, off ,charging . also want the circuit to automatically shut off when the batteries are fully charged, red led on showing full charge but charger is automatically turned off..chargeing, yellow led on, hope that makes sense,i know u can buy them there called smart chargers but makeing one might be cheaper then the one i found for like 40 bucks.any ideas or help would be appreciated **** THANKS***