2002 ford explorer not charging?

I have a 2002 ford explorer and I had a remanufactured alternator and a battery put in also new battery ends that go on top of the battery. It started right up but shut off after 10 minutes and had to charge the battery to move it back to the driveway
The battery light was on and the level was very low.
Does anyone know what this could be or what to inspect?

Alternator must give 13 - 14 V when running. You may have another problem - there's somenthing that consumes power all the time - sometimes it is a powered antenna, radio, some other thing… Check the power consume from battery
when engine off.

You were ripped off, clearly the problem was not the battery or the alternator

The voltage regulator may be malfunctioning.