how do you know if your car has a dead battery?
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['Your dashboard warning light. Your dashboard warning light comes on. ... ', "Engine cranks slow or not at all. Your engine cranks slowly or won't start at all. ... ", "No radio. Your radio doesn't turn on. ... ", 'Swollen battery size. ... ', 'Odd smell from your battery. ... ', 'Your battery is old. ... ', 'Check engine light flashes.']
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["Dashboard Lights. One of the most obvious bad battery signs is a warning light on the car's dashboard. ... ", 'Old Battery. Another pretty simple sign that the car may be having a battery problem is the age of the battery. ... ', 'Slow Start. ... ', 'Bulging Battery Case. ... ', 'Odd Smell. ... ', 'Electrical Issues.']
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2. Look for the Warning Signs of a Dying Battery: You might notice that when you turn the ignition key, the engine cranks slowly. This could be a sign that your battery is about to die, Mazor says. Another telltale sign is to turn on the headlights when the engine isn't running, he says.
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Sit on the mower, depress the clutch and turn the key. If the engine does not crank, cranks slowly, or makes a clicking noise your battery may be dead. Turn off the key and remove it. Locate the battery; it's often under the seat.
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If the battery is working properly and nothing is wrong with it, then it's the alternator that will more likely cause a problem. A simple test to check the working of the alternator is by running your car; and then unplugging the positive connection of the battery.
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Check the reading to see the current voltage of your car battery. Anything lower than 12.2 volts, and it's identified as a bad battery.
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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. If you don't have a multimeter to tell you the voltage of your battery, you can do a test of your electrical system by starting the car and turning on the headlights.
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['Attach one red jumper cable clamp to the positive terminal on the dead battery.', 'Attach the other end of the same cable, the second red jumper cable clamp, to the positive terminal on the working (live) car battery.']
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If your battery is reading 0 volts, chances are the battery experienced a short circuit. If the battery cannot reach higher than 10.5 volts when being charged, then the battery has a dead cell. If the battery is fully charged (according to the battery charger) but the voltage is 12.5 or less, the battery is sulfated.
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['To determine if the battery is experiencing a problem, turn off all electrical loads and the charging source.', 'For an accurate reading, allow the battery to sit with no electrical loads applied for at least one hour.']
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To get the most out of your car battery life you should understand how to check if the water is low. Usually there is a clear “eye” on the top of the battery that displays a green light if the water level is good and a dark light if the battery needs water. Be sure to use distilled water.
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['Slow Engine Crank. When you attempt to start the vehicle, the cranking of the engine is sluggish and takes longer than normal to start.', 'Check Engine Light. ... ', 'Low Battery Fluid Level. ... ', 'Swelling, Bloating Battery Case. ... ', 'Battery Leak. ... ', 'Old Age.']
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['Headlights that start pulsating at night, from dim to bright.', 'A burning smell coming from the alternator.', 'Dashboard warning lights turning on abruptly.', 'A squealing sound from your engine.', "Intermittent malfunctioning with your car's electronics, including the radio."]
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First off, switch the key to the on position without cranking the engine. Check the dash to see if your battery gauge is reading below 12V. Next, notice whether dome or headlights seem dim, as this indicates a low battery. Check the condition of the battery itself, noting any loose cables or crud accumulated on top.
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If the headlights flicker, dim or get brighter when the accelerator is pressed down, your alternator may be bad. No change in headlight brightness indicates that your alternator is likely fine. A battery test is easy to perform and can be done at home. First, open the hood and start the car.
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['The Phone is Dead: This may be an obvious one. ... ', 'The Phone Only Shows Power When Plugged In. If the battery is bad, it does not hold a charge to power the phone from its stored energy. ... ', 'The Phone Dies Quickly. ... ', 'The Phone or Battery Starts to Feel Hot. ... ', 'The Battery Bulges.']
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["Engine Doesn't Crank or Start. ... ", 'Engine Barely Turns Over. ... ', 'Dim Lighting. ... ', 'Engine Starts and Stays Running When Jumped. ... ', 'Dim or Overly Bright Lights. ... ', 'Discharged Battery. ... ', 'Alternator Noise. ... ', 'Electrical Issues.']