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 you use the seat belts correctly?

Seat belts aren’t all that complicated, but they must be used correctly in order for them to do their job. They’re more important than air bags, and are actually the only “lifesaving” features on your car. Using them incorrectly can...

Q: What about for the 3.6 L Is it the same oil specs

Hi there. In regards to the viscosity of oil that should be used, SAE 5W-20 engine oil is recommended for both vehicles. Most brands are equal in regards to quality and durability; however, Valvoline and Pennzoil are exceptional in my...

Q: Car will not start

The first problem is that you may not have ran out of gas but burned out the fuel pump by running the fuel pump with low fuel for a prolonged period of time. Then with all the cranking needed to...

Related articles

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.