Replaced battery, had alt checked. Won't stay charged. I shut everything off when i shut it off. I have also checked to see if anything is draining the battery. Any ideas?

 

You will need a multi meter/VOM (preferably a digital one) to test the output of the alternator when running and for a parasitic draw when not running. The alt should be putting out at least 13.5 volts when running. With the vehicle off, doors closed and all lights off (pull the hood light bulb if you have one) the draw should be no more than 50 milli amps (.05 amps).