If the alternator is not charging the battery, then it will eventually go dead
If the voltage regulator (in the alternator) is defective it will eventually kill the battery Check the alternator with a voltmeter
A fully charged battery (without engine running) should read approx. 12.8 volts With engine running should read 13.8-14.2 volts
Low battery (bad battery or alternator) or bad starter, most likely.
run it and then disconnect the negative wire from the battery if alternator dies its bad.
No. If the alternator is working fine, the battery power is not used.
alternator probably needs replacing not charging battery or bat is dead and not taking charge
you need the alternator to charge the battery with no alternator when the battery drops to about 10 volts car will not run at all.
No, the alternator recharges the battery. Of course the alternator is turned by the engine.
Alternator versus Engine Performance IssuesIn and of itself, a "bad" alternator will not effect the engine performance.That said, IF the alternator is not properly charging the battery, and the BATTERY capacity gets low enough, then the very low power can result in very low spark production at the spark plugs, which will fail to dependably ignite the fuel, AND THEN result in "rough," or no running.So, a "bad" battery itself does not cause rough running, but can lead to battery depletion which can.
The inverter isn't run off the alternator... it's run off the battery. The alternator simply recharges the battery.
It will run until the battery is too low to support the engine systems, could be 10 minutes or several hours.
Yes, the job of the alternator is to recharge the battery and run all the electronics when the car is in use. If the alternator is defective and not putting out the required voltage to keep the battery charged it will soon run down.
-- Answer -- The battery in a car runs ALL the electrical systems in that car. The alternator only charges the battery. If you run a car without the battery in place you will ruin the alternator. Phil
Until the battery gets low enough that it will no longer provide enough spark to excite for combustion.