I just had a new alternator put on, a brand new one. Prior to that one I had a u

Have to charge the battery with my battery charger, can drive on it about 20 mins. If I get a jump from another car I can only drive about 2 miles. And then need another jump. Lights go dim and when I go to accelerate its like car has no power the pedal goes all the way to floor board and will barely go and then just quits on me.

i would take the new one off of the vehicle,take it to the ZONE or Advance,etc.have them check it SEVERAL TIMES on their machine,not just once,but several times,see what results are?if it's killing the battery,it ain't charging. used one could be bad,also the new one too.seen lots of times,bad right outta the box!parts house can't check alternator on the car,unless the battery has a FULL charge on it.post findings.