One of two things is wrong here.

1) You need a new battery. The battery is bad. You have had the battery "tested" but you made a mistake - TESTING a battery does not FIX a BAD BATTERY. Replace the battery! Do it NOW and STOP being a wussie!

or

2) SOMETHING is drawing the battery down while the car is off. Insert an ammeter in line with the battery (does not matter, positive or negative side) and see what current you have flowing.

You should see well under 1/2 amp of draw. In fact, it should be less than .1 amp draw - most cheap meters won't be able to even measure the draw! Tell you what, if you can insert a tail light bulb in series between the battery and the + or - cable, if the light lights up, you have considerable draw!



But my money is on the battery - and I don't care what the "Test" shows.

How old is this "good" battery?