Ford 2003 Expedition EB. Check Charging System

Try charging bater or new aldinater or a CHEVEY

No one can guess at vehicle problems

Should have gotten to auto zone sooner

You know how old the battery is

Asking the question over & over won't
get you back on the road

check ur alternator,could be a loose connector or a loose belt,they seem to stretch alittle with use, good luck,also take it to auto zone they can tell you if its charging or if its the battery, at no charge,where you can get an idea, again good luck

Check your battery connections - where the cables connect to the battery posts AND where the cables connect to the starter/main power feed and where the ground cable connects to the engine and/or frame. A poor or corroded connection can cause intermittent problems and poor charging performance.

The "Charging Sytem" includes the battery, the alternator, the voltage regulator and all related connecting wires and cables. If the charging system was tested and it tested "good" then all of these components are working properly.
If your charging system is good and you continue to have a dead battery, then you probably have an "Ignition-Off draw". This means that something is staying on after the ignition is shut off. This could be interior lamps not shutting off due to a bad door switch, or the headlamps being left on, or some other electrical component in the vehicle that is malfunctioning. If this is the case, then you need to have your vehicle checked by a competent Service Technician who, using the proper equipment and techniques, can locate and repair the source of the problem.

Sounds like a battery, charging system, serpentine belt slipping problem. Just drive the vehicle to a Auto Zone and have them check the battery and charging system. Please let me know if this helps.

the red battery symbol indicates a problem in the charging
system , usually an alternator gone bad or possibily
a blown fuse or associated wiring problem.
Advance auto can check it for free.

Hi:
The battery light is telling you that you are running off the battery,and you have a problem with your charging system. An easy way to check your alternator is to get a volt meter, and measure the voltage of your fully charged battery. with your expedition not running, it should read about 12.6 volts. When you start your expedition, it should read approx 14 volts if your alternator is working properly.
Of course, check all of your connections first, and most auto parts stores will check your alternator out for free, so they might have a chance to sell you one!

check battery and cables.if battery is 12.5 volts. look at cables for looseness and corrosion.if corroded clean cables and battery post. also check to make sure the alternator is charging.

If he replaced the battery that would have cleared the code. There is another issue. Was the alternator aftermarket? Just becuase it is new does not mean good. Those are easy to install I would return it to where you got it and try another.