Open your phone's Settings app. Under "Battery," see how much charge you have left, and about how long until a full charge.
Open your device's Settings app. . Tap Battery. At the top, under the percentage, check how much battery charge you have left.
Open your phone's Settings app. Under Battery, see how much charge you have left, and about how long it will last. For details, tap Battery. For more details on your battery usage, tap Battery usage.
If you're having car battery trouble, it's time to head to your local AutoZone for free battery testing. It's easy! An AutoZoner will test your battery while it's still in your vehicle. If the battery is discharged but still technically sound, we can charge up the battery so you can be on your way.
2) Take a Voltage Reading
If your battery is: Reading 0 volts, chances are the battery experienced a short circuit. Cannot reach higher than 10.5 volts when being charged, then the battery has a dead cell. Fully charged (according to the battery charger) but the voltage is 12.4 or less, the battery is sulfated.
If you think you might have a bad battery, come to any AutoZone store nearby and ask for a free battery test. An AutoZoner will come out to your vehicle and use a battery tester to get a read on the status of your battery. If your battery is low on power but still in good shape, we'll charge it back up for free.
Check your battery's state of charge using the 'Eye' or 'State of Charge' indicator on the top of the battery. “Green” indicates a healthy battery, “Black” or “Clear” indicates your battery may need charging or servicing. A simple voltmeter or multi-meter can also be used to check your battery's resting voltage.
The best way of checking this is to reach for your jumper cables and attempt a jump-start. If, when attempting a jump-start, it stays running for a while but then again fails to start the next time you try, it is probably a battery issue. If it immediately stalls, it is more likely to be a problem with the alternator.
If you don't have a charger, the experts at AutoZone can assist you in selecting one. If you prefer not to work under the hood, you can bring your dead battery to an AutoZone store, where they will test and recharge it free of charge.
As soon as you get in the car, turn on the headlights. If the headlights flicker within 60 seconds, you may need a new car battery. One of the easiest ways to tell if your car battery is dying is by watching the headlights in a dark garage.
Yes, you can jumpstart a car with a bad alternator, but there are some important things to keep in mind: how to know if your alternator is bad. If your car starts but dies shortly after, or if you notice dimming lights and strange electrical issues, these could be signs of a failing alternator.
Engine Turnover is Slow or Weak
One of the most usual signs of a battery dying is a slow engine turnover. When you try to start your car, the engine will turn over slowly or not at all. This happens because there isn't enough strength left in the battery to start the vehicle.