Skip the auto shop - Our mechanics make house calls

Q: Went got a test at Autozone for alternator, she stated everything test normal but battery voltage is too low? What does that mean?

asked by on

Went got a test from autozone for my alternator! When she ran the test she stated everything us normal bur read battery voltage is too low! What does that mean? Do ii need a new battery or alternator?

My car has 17800 miles.
My car's transmission is unknown to me.

Hello. This could mean the alternator is not charging the battery high enough or the battery will not accept and hold a charge. You may need to replace the battery first, then recheck the alternator charging system for proper operation. If you need help, an expert from YourMechanic can come to your home or office to inspect why your battery does not hold a charge and replace the alternator if necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • Went got a test at Autozone for alternator, she stated everything test normal but battery voltage is too low? What does that mean?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Do I need to get a new battery when my alternator dies?

I would recommend having your battery tested. When your alternator goes bad, that means your battery has been charging regularly. Irregular charging can decrease the life of a battery. Since you can't get the car going, I would recommend having...

Q: My car cranks but doesn't turn over

Hi there. First, we need to determine what is going on. Does it crank and not start? or does the engine not crank/turn over? Cranking and turning over mean the same to technicians. You described it as cranking and not...

Q: What will make a battery drain quickly? It doesn't happen every day but it happens 2-3 days a week.

i would suggest checking the voltage regulator. This is a unit that regulates the charging of the battery by the alternator, making sure that the battery receives the correct amount of amperage when charging. When this is not working properly,...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...