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Yes. If the alternator is dead and you drive the vehicle, all the power is coming from the battery and it will eventually drain completely.
Also, if a diode is shorted inside the alternator, that can drain a battery.
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∙ 12y ago
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Why does battery drain while driving Volvo 940?
Alternator is defective or battery has a dead cell.
What causes the battery to drain when running?
Defective alternator or voltage regulator. Also possibly the battery is defective with a dead cell.
Will jump starting a dead truck battery drain a car battery?
If the donor vehicle is running and has a properly functioning alternator, no.
Could alternator drain battery when car is not running?
If the alternator is installed incorrectly, yes, it can drain the battery.
What would cause a battery to drain in a 1989 mercury sable if it is not the power cords or alternator?
dead cell in the battery or something is on pulling power from the battery.
Could something other that alternator cause battery to drain on 2005 C180 Kompressor?
Yes, a dead cell in the battery or something is on drawing power from the battery.
Can a bad alternator drain a good battery?
It doesn't actually drain the battery, but without a working alternator to recharge the battery it will only discharge as the car is operated.
What could drain the battery on a 2002 geo prism other than the alternator or starter?
A dead cell in the battery will cause it to loose it's charge overnight. The only fix is to replace the battery. Any light that is staying on will drain the battery. Also a stuck relay will drain the battery.
5 things that could cause an abnormal drain on the battery?
Dead cell in the battery. A light on anywhere on the vehicle. A relay that is stuck. Defective alternator.
Will a bad alternator drain a battery?
Yes
What will drain car battery?
Dead cell in the battery, defective alternator not recharging the battery, or something is on pulling power from the battery. Dome light, glove box, under hood, trunk, brake light, any light that is on. Also a stuck relay can drain the battery.
1991 Eagle Talon What makes it drain the battery when the alternator is brand new and so is the batteryWhat makes it drain the battery when the alternator is brand new and so is the battery?
it reg=charges
