2003 Taurus wont start electrical on just clicks when try to start it, jumped battery this morning battery is 6 months old alternator replaced in 14 not that old what is the problem??????

if the bridge (three diode that turn AC current to DC in alternator) is bad it causes internal draw

Even a relativly new battery can develope a bad or dead cell. Does the engine spin over when ignition is attempted? Easiest way to check this is to load test the battery. Any major auto parts dealer( Advance, Autozone, NAPA, Oriellys,etc.) can test this at no charge. Also use a voltmeter to test the alternator output. Most alternators put out between 13.5-13.8 volts at the battery. A faulty alternator can cause the engines electrical system to pull voltage from the battery until it (Battery)gets down to around 10 volts at which time the voltage is to low to support the needs of the system and the vehicle simply cuts off and will not restart as described in the first part of your post. Hope this helps.

A CLICKING SOUND USUALLY MEANS LOW VOLTAGE. COULD BE LOW BATTERY,OR BAD OR DIRTY CONNECTIONS AT THE BATTERY & OR STARTER. TRY JUMP STARTING WITH GOOD JUMPER CABLES " STRONG CLAMPS & #4 CABLE " . IF THAT WORKS THE BATTERY IS LOW IF IT STARTS CHECK VOLTAGE AT THE BATTERY WHILE RUNNING. VOLTAGE SHOULD READ BETWEEN 13.90 & 14.80. IF THAT IS OK , THE ALTERNATOR IS WORKING, CHECK THE BATTERY

either your battery has dead cells and wont take a charge or possibly your altenator is faulty

battery probably bad or you have drain somewere
start with the easy,have battery charged and load tested

The alternator may not be charging the battery. Jump start it, and use a volt meter at the battery, red lead to positive and black to neg. The meter should read between 13 and almost 15 volts, any lower than 13 volts, the alternator is no good. (this is done with vehicle running).

LIGHT ON IN THE THE GLOVE BOX,TRUNK,STUCK BREAK LIGHT SWITCH,,, LOOK AT IT AT NIGHT WHEN ITS GOOD DARK. OR IT COULD BE A BAD BATTERY

It could be the starter solinoid or the starter, If you can remove starter you can take it to any advance auto parts store and they can check your starter for free,

I’m happy to assist further over the phone at https://www.6ya.com/expert/john_2c7bb9c157d0baa8

If you have a multimeter, connect it to your battery, and select an appropriate DC voltage range. On my multimeter, I use the 20volt setting.

If your battery shows 12-13.8 volts, then it is not the issue. If your battery voltage is low, then you will probably need a new battery. A flat battery can also indicate that the alternator is not recharging your battery properly, but it could also just mean that your battery is old and needs replacing.

If your engine wont turn over, and if your battery is good, it could be a faulty starter motor.

Those jump start packs need to be charged often, or the battery inside them can stop working. It is possible that your jump starter pack is also broken.

Try jump starting the car from another vehicle, with jumper leads. If you know your battery is dead, you could also just replace it with another one.

Check the alternator and battery clemmas/wires coming from alternator. It looks like no charge from it coming to battery. If it is second battery already this is the sign. You can do it free of charge at autozone store. But any way as a temporary solution you can buy battery charger ($25 walmart) and charge the battery back if battery is damaged you will see it right away (it wont be charging). After you charge battery back start the engine run it for 30 minutes (if Alternator OK it is enough to charge battery back), stop and start again. If no start alternator is a problem.
Good Luck