The alternator should be putting out between 13.5 and 16 volts on a good alternator with the engine running as measured with a DC volt meter at the battery posts. Any less or any more and the alternator is defective of the belt is slipping.
While the car is running the alternator should be recharging the battery faster than stereo can drain it. I suspect you either have a problem with the alternator or its time to get your battery replaced. Until you get it fixed, if you don't turn on the radio, it wont drain your battery :) If it is a high power model, it needs to be wired directly to the battery.
Depends on the make, model, & year of the car, who installs the alternator & battery, and the type battery you buy. Most auto parts stores will install a battery for free. Batteries cost from $60 to $250. Alternators cost from $65 - Up. Labor to install an alternator can be from $75 to $225 or more.
A bad voltage regulator in the alternator. Depending on year make and model it may be outside or separate from the alternator.
You need to check and make sure the alternator is charging. You could have gotten a defective one or if you got a used one it may be bad. Get a digital multimeter and with the vehicle off check the voltage at the battery. Should be 12+ volts with a charged battery. Start the vehicle and check the voltage again, should be 13-14 volts or better. If no voltage increase check the big output terminal (thick red wire usually going to it) at the alternator and see it the alternator is putting out voltage. If no voltage other than battery voltage then the alternator is not working. This is assuming that the alternator has an internal voltage regulator (most now do). Without year/make/model/engine size it's very hard to give you decent direction other that generic help :-) **I am assuming you have tested the battery**
the alternator isn't charging as it shouldthe battery is bad and can't hold a charge any longeryou have an electric fault somewhere which is draining the battery.
When it is no longer able to keep the system charged. Starting with 2001 model, when the car is started, if you see either the battery warning or the battery along with the brakes warnings on, or intermittently flashing on, you need to have your alternator checked. Otherwise, its fine.
Your alternator is probably faulty. This means your battery will not be getting recharged properly when driving. I had this for about a wwek and then found my battery was practically dead. I had to get a new alternator (non Peugeot ones on ebay are around £80) They are not too difficult to fit yourself , depend on you model.
16 volts or more is too high. You should see between 13.8 and 15.3 volts with engine running. I would suspect the voltage regulator is defective. This will overcharge and ruin your battery. The voltage regulator may be built into the alternator depending on the make and model vehicle.
First, you disconnect the battery negative. Put a socket and ratchet or breaker bar to the belt tensioner, twist counterclockwise to loosen the slack on the serpentine belt. While you have slack on the belt, pull it off the alternator pulley. There'll be a quick connect with some electrical lines going to the alternator. Disconnect that. On the back side of the alternator, there'll be a stud with a nut on it, and connected to that stud will be a wire with a ring terminal (this wire will run from the alternator to the battery positive). Disconnect that wire. Not being familiar with this specific model, I don't know exactly where the bolts are or how many there are, but you'll see them if you look around the alternator.. should be two or three bolts. Remove those, and the alternator should come out.
I have the same model car, and had a similar problem. Your problem is probably due to a faulty alternator - when that part fails it will fail to transfer power from the car to the electrical system - draining the battery. You should have someone check to make sure the alternator is functioning properly.
To replace the alternator in a Cadillac Seville, first disconnect the negative battery cable to ensure safety. Remove any components obstructing access to the alternator, such as the serpentine belt and possibly the intake manifold, depending on the model year. Unbolt the alternator from its mounting and disconnect the electrical connectors. Install the new alternator by reversing the removal process, ensuring all connections are secure before reconnecting the battery.
depends on make and model but is mostly a comp or connection problem between battery and alternator and electrical system