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Yes, it can. A completely dead battery can blow the alternator diodes, at least in older systems - I am not so certain about newer systems, whether or not they are protected against this annoyance. In any case, the alternator is not generally designed to charge a battery from scratch, but just to keep it charged during normal use. The alternator will not be completely ruined, but it will not function until the diodes are replaced.
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∙ 14y ago
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When an alternator goes bad does it ruin the battery?
YES. it will ruin your battery as the battery needs the alternator too recharge a full battery will last you 30-40 min maybe more or less depends.. it will drain your battery and make you stall (you mite be able too recharge later)maybe) if your alternator is bad YOU must get a new or used one ,its recommended if you get a new alt. get a new bat. as this will supply you years of trouble free from your car electrical issues.
Will battery recharge after bad alernator is replaced?
An alternator is designed to keep a fully charged battery at peak level. It is not designed to charge a dead battery. Installing a new alternator on a car with a dead battery can in some cases ruin the new alternator. Fully charge the dead battery before starting the engine.
What will cause my old and new alternator in my 98 frontier to not charge?
bad alternator cable/corrosion bad battery
Why do your battery light comes on after you install a new battery?
Defective alternator or bad wiring.
Could a bad alternator cause a new battery to die?
Yes, it can over or undercharge the battery. If i is overcharging it can ruin the battery. If it is under charging the battery will just run down. Check the voltage at the battery with the engine running. You should read around 13.5 to 15.5 volts.
What will bad alternator do to a cars battery and lights?
A bad alternator will have the effect of draining the battery, resulting in dim lights, trouble starting the car and the like. It would be best to replace the alternator as soon as possible and possibly obtain a new battery. This may vary depending on how much the bad alternator has drained it. You can get your alternator and battery checked any time at Auto Zone.
Why would the headlights drain the battery on a 1996 Lexus with a new alternator?
The new alternator is bad happens all the time.
Why 1988 Dodge truck stopped running has new battery?
bad alternator ? its not charging the battery
When replacing new battery why does the battery continue to lose all its power?
The alternator is probably bad. That is what recharges your battery
Why does the battery meter stay in the yellow zone after installing a new alternator on a Pontiac Firebird?
If the car has a bad battery the battery will not charge just becaus you put a new alternator in try raplacing the old battery.
Just installed a new alternator and belt on 1999 blazer - the new alternator is very hot your husband has leather hands and says it very hot Everything is grounded properly?
is your battery Low or poor?? Charge your battery on slow charge for 8hrs to give it a good deep charge, Installing an alternator on a low or dead battery will ruin it and also not charge your battery properly.. An alternator is not a battery charger its a battery maintainer!!
What makes a brand new one week old alternator go bad?
If your battery is not fully functioning and needs to be replaced, it can make the alternator work harder. This could cause a brand new alternator to go bad. Check your battery, if the battery is not the issue, return the alternator, it should have a warranty on it for at least the first 30 days.
