# Car not starting, battery reading 12.5V

## Is 12.5 volts too low for a car battery?

12.6V volts or above – Your battery is healthy and fully charged. No further action is required. 12.5 volts – Your battery is at a healthy state of charge, but we’d recommend re-checking it within a few days to ensure the voltage hasn’t dropped any further.

## Can 12.5 volts start a car?

The modern standard worldwide is 12V, but this parameter is changeable: The normal voltage needed to start the car begins from 12.6 volts. At the time of exploitation, this parameter is between 13.7 to 14.7 volts.

## What happens if a battery reads 12.8 V?

If your voltmeter is showing a voltage anywhere between 12.4 and 12.8, that means your battery is in good shape. Any voltage above 12.9 volts is a good indicator that your battery has excessive voltage. If that’s the case, turn on the high beams to drain excessive voltage surface charge.

## At what battery voltage will a car not start?

When the voltage of the starting power supply is lower than 11.8V, it will be difficult to start the car. You can choose to turn off all other electrical appliances and try several times. When the battery voltage is lower than 10.8V, it is generally impossible to start the car.

## At what voltage is a 12V battery dead?

12.0 volts

Resting fully charged 12-volt batteries are around 12.8-12.9 volts, and flat dead ones are at 12.0 volts, so 12.4 volts on a resting battery means it’s about 50% charged.

## Is 12 volts good for a car battery?

Fully charged automotive batteries should measure at 12.6 volts or above. When the engine is running, this measurement should be 13.7 to 14.7 volts.

Yes, a battery can show 12 volts and still be bad. There is a lot attached to the volts your car battery or any battery shows. It indicates if the battery is good or bad, plus the volt could let you know the battery’s charge.

## How do I know if my alternator is bad?

7 Signs of a Failing Alternator

1. Dim or Overly Bright Lights. …
3. Slow or Malfunctioning Accessories. …
4. Trouble Starting or Frequent Stalling. …
5. Growling or Whining Noises. …
6. Smell of Burning Rubber or Wires. …
7. Battery Warning Light on Dash.

## What should a 12-volt battery read on a multimeter?

When the probes touch the terminals while the car is off and the battery is resting, the multimeter display should show a reading of 12.2 to 12.6 volts (full charge). This voltage range means the battery is in good condition for starting the vehicle.

## Is 13 volts good for a car battery?

The ideal car battery voltage with the engine running is between 13.7 and 14.7V. With the engine off, you should get a reading of 12.6 volts. If the battery isn’t fully charged, it will diminish to 12.4V at 75%, 12V when it’s only operating at 25%, and down to 11.9V when it’s completely discharged.

## Is 12.2 volts enough to start a car?

At 12.4 volts the battery is considered 75% charged and can still ignite your engine. When the battery voltage lowers to 12.2 volts without the engine running, it is considered a bad battery that may start your engine but is no longer capable of holding a charge.

## How do I know when my car battery needs replacing?

5 Signs That Your Car Battery Needs to Be Replaced

1. Car Struggling to Start. If the vehicle isn’t starting or seems slow to fire up, then it’s often the battery that’s the problem. …
2. Flickering/Dimming Lights. …
3. Dashboard Warning Light. …
4. Electrical Malfunctions. …
5. Corrosion.

## What are the signs of a dead battery?

10 Signs Of A Dead Car Battery

• No Response At Ignition. …
• The Starter Motor Cranks But The Engine Won’t Turn Over. …
• Sluggish Cranking Times. …
• The Engine Starts But Then Dies Immediately. …
• No Door Chime Or Dome Lights. …
• The Check Engine Light Turns On. …
• Misshapen Battery.

## What is the average life of a 12 volt car battery?

three to five years

Average 12V car batteries typically last three to five years, and manufacturers recommend always replacing car batteries once those five years are up.

## Why won’t my car start if the battery isn’t dead?

If your vehicle won’t start, it’s usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter. It can be hard to determine if you’re dealing with a battery or an alternator problem.

## How do you tell if its your starter or your battery?

Last, Check The Starter

The battery sends a burst of energy to the start which uses this energy to turn the engine over and get it car started. If you put the key in the ignition, but only hear a click when you turn the key, you’ve got a problem with your starter.

## Can a car battery be too dead to jump-start?

No, the battery cannot be too dead that it cannot be jump started. First of all, this is a chemical element. So, naturally, it can’t just “stop working” without a single symptom. There is not a chemical reaction that could immediately interrupt itself under these conditions.