New battery and alternator. And still keeps drain the battery. Battery light on.

Hello, what "killed the battery in few min"? What does that mean? Replacing components doesn't mean you're fixing something. Especially if you cannot vouch for the quality and condition for the components you are installing. First, check the battery for state of charge and if good, the ability to sustain a load. If that tests good, have the charging system checked -- for both amperage output and voltage. I think you'll find that something is amiss here. If the alternator and battery specifically test good, then you're looking at maybe the rectifier connector at the alternator - inspect it closely for overheating, damage, lack of contact. Or you could be dealing with corroded cabling. Inspect closely. The battery light will only come on when a lack of proper charging is detected.