Skip the auto shop - Our mechanics make house calls

Q: My car has low battery voltage - 2015 Toyota RAV4

asked by on

I'm considering buying a used car from an individual and during the maintenance inspection done by a YourMechanic professional, the only issue that came up was that he marked the battery volts as being "less than 12.5 volts". He also uploaded two photos that I feel are related...

The first showing a screen shot of his testing device's screen and contained the following info:

Starter Test Charge Battery (in yellow text) Crank Volt: 6.75V Volt Percent: 38% Crank Time: 644 ms

The second photo was this:

Charge Test Normal (in green text) Loads volt: 13.81 V Loads off volt: 14.04 V

Can anyone translate what all that would mean? If the vehicle is in a big city and not being driven on the highway much, could that be the cause of the battery volts being low? Any of this cause for any real concern?

A: Hello. From that test, I can determine that...

Hello. From that test, I can determine that the charging system, as in the alternator, is fine. The voltage of the battery itself is very low, however. The starting volts are dropping way below the minimum, which means that the battery needs to be replaced. If you want to prevent the car from having any issues with the vehicle starting, I would replace the battery as soon as you have a chance.

If you are going to have the battery replaced, have one of YourMechanic’s certified mechanics come back out to you to replace it for your.

Was this answer helpful?
Recommended services
Get a Quote

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!

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: How do I adjust the steering wheel of a 2012 Toyota RAV4?

It’s important that you have the right position and the right grip on the steering wheel at all times. Because drivers are different heights and have longer or shorter reaches, your vehicle is equipped with an adjustable steering wheel. It...

Q: Steering wheel locked while going around curve

Hello there, When a vehicle loses power assist in the steering it can definitely be a cause for concern. The 2015 Q5 is equipped with electro-mechanical power steering. This type of system uses electronics to provide the power assistance to...

Q: hi chris... i have a 2002 bmw x5 well taken care of.... light stays on in the car when you turn off key. think it has drained bat

The existing battery should be load tested and if it fails the battery should be replaced. The cost of replacement can be obtained by clicking on "Get a Quote" at the foregoing service link. But, at the same time that...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...