My jeep is running down the battery every 2-3 days battery is new and it is charging 14 volts tested with meter it is drawing 12.8 volts. i have tried unplugging everything.

You have a parasitic draw. Put a test on a fully charge battery. Then put tester on the battery. Take one fuse at a time out and watch meter. Put it back in each time. You shouldnt have more than .5 draw. Your battery should be around 12.6, So with everything off your battery should be 12.6, if it is less then test each fuse and see whats making the draw. Good luck

amps or volts
11 to 12 amps indicates nothing but if it is volts then it indicates that the alternator is not charging the battery
Battery voltage is 12 -13.5 volts and when charging is 14.5-14.8 volts dc
the rest of your statement indicates that the alternator or voltage regulator is faulty and you should have the charging system checked by an accredited auto electrician

very simple my friend! start the jeep. put a multi meter on the battery on dc volts. if it is below 14 volts, the alternator is not charging the battery. you can also preform a draw test by disconnecting the positive terminal from the battery. set your meter to amps.(you may also have to move the jumper in the meter) connect you meter to both the battery, and the terminal. you shouldnt see anything about 10 milliamps. make sure all lights are off, and all doors are closed. if you have a draw, start by pulling 1 fuse, and seeing if the amps drop. if it doesnt, put the fuse back and go to another fuse. also, if you have anything aftermarket (radio, remote starter, etc.) this is most likely the issue

it may have deffective diode on the charging system(the alternator). 14 volts is an over charge in a battery. ampere reading must be on what the battery designed.

You can start by disconnecting the battery ground cable, connect a 12 volt test lamp between the cable and the battery post, If it lights up you have a short. and you'll need to start pulling fuses one at a time until the test lamp goes out. at that point you will know where to look for short.

Check and verify that your alternator is charging properly, if you hook a multimeter up to your battery you should see a voltage between 13-14 volts on the charging side, if this is the case your alternator is good, next i would check the resting voltage of your battery that should be tested with the car off and it should be between 12-12.5 volts, if all of this checks out i would start looking into the parasitic draw on your battery while your vehical sits overnight, make sure all your courtesy lights are going off, your glove compartment light any under hood lights things like that if any lights like this are remaining on you will have a dead battery day after day because the light or draw on the battery keeps draining it of its charge....

ok when the pcm detects something wrong whit the charging system the pcm show you in your board CHECK GAGES if this is not on, dont worry about

When it is running,put a volt meter across battery terminals. You should see 13 + volts if alternator is working. Also put an ampere meter in series with a battery cable,key off, engine off, and you should see less than 40 to 50 Mili-Amps. If more,start pulling one fuse at a time,untill you find the circuit that is draining the battery

Take a volt meter and put the test leads on the battery terminals,
red to positive,
black to negative,
set meter to 12 volts dc
If the meter reads less than 14 to 15 volts dc, the alternator is not charging and needs a new one.

did you replace these things because the engine was turning over slower then normal?
or no turning over at all?
or turning over but wouldn't start?