My alternator is over charging and damaging my battery

You need to have the Alternator tested and the battery.

Could have damaged regulator. When the car is running have you checked the voltage at battery terminals. If battery is charging it should be around 14 volts. If around 12 your charging system is fubar.

Meanwhile if you have to charge the car every day then something in the car is draining the battery, Using an ammeter you need to track it down, Hook it up to battery and pull fuse out one at a time till the drain goes down. That isolates the circuit with the problem.

Bad alternator means no battery charge. Run the battery down without a charging means no power and engine will die. Charge the battery and put a meter on it to see if it goes to 14 volts with engine running. If stays under 13 volts with engine running, replace the alternator.

Check battery cables are correct ! Prime suspect here ! Alternator may be damaged and shorting .. Don't drive any car that will melt jumper cables ! Something very basic wrong here.

Even with the wire removed, are you saying it goes dead while driving or just sitting . if it goes dead wile driving then the alternator may not be charging the battery as you drive but if it goes dead while the car sits then there is a draw some where.
if you sent me the year make and model with the engine size and also let me know when it goes dead in 1 hour, while driving or car just sitting and i will help you solve the problem. good day

Sounds like you have a bad alternator. The only reason you have a battery in your car is to start it. If the alternator goes bad and stops charging then the vehicle will use the power that is left in the battery until it is used up. Once the car is running, all electrical goes through the alternator. So what i think is that you got just enough power in the battery to get it started and then to run for a little bit.Ignition, light and everything pretty much runs on power generated from the alternator. I bet if you put a good charge on your battery it will run longer. Some vehicles (mostly ford) have a fuse for the charging system (alternator) so depending on the vehicle you might want to start checking the fuses but you still should give your battery a good charge before hand. I hope this helps you and good luck.

Check the charging system, clean the terminals.

There are a number of things that can cause this including the battery itself. As they age bits of lead can build up at the bottom of the case and cause an internal short. Another possibility is the alternator if the diodes go bad. Try this next time you park it dis connect the battery, if it's dead in the morning when you reconnect it...time for a new battery. If you suspect the alternator, leave the battery hooked up and disconect the big wire at the back of the alternator. (it's the one that charges the battery) This same idea can work for anything else that might run it down, disconnect it, if the battery does not go dead you found what's causing it.

It sounds like the alternator is not charging/running the car like it should. I would start the car and disconnect the battery, if the car dies then something is not hook up or the alternator is bad

Its the 175amp megafuse. About $7 at the auto parts store