how to know if your car battery is out?
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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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Just press and hold until you hear a chime, then say what you need. To check the Fuel Gauge, which shows battery level and charging status, press and release the power button.
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There are a few key signs of a bad alternator. The most common symptom is that the vehicle's charging system will show an issue as the battery-shaped warning light comes on on your dashboard. If this light doesn't come on, the “CHARGE” icon could also come on while you're driving.
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['Hold down the Alt/Option key.', 'Click the battery charge icon at the top right of the desktop near the clock.', "After the Condition heading at the top of the menu you'll see one of four battery status messages: Normal, Replace Soon, Replace Now, and Service Battery."]
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However, a very simple way to check if the alternator is working is to run the car and disconnect the positive terminal of the battery. If the vehicle stops running, then you probably have a bad alternator. You can also examine your interior and dashboard lights.
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3. Weak or dead battery. ... If the battery is weak or dead, the car will continue to run but the lights will again become dim after a short time, indicating a problem with the charging system. If the vehicle has difficulty starting after the battery is fully charged, the problem likely is with the alternator.
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A dead car battery is the first sign that something might be wrong with the alternator. If your battery is good, and your alternator isn't working, the battery will still lose its charge because the alternator isn't keeping it charged.
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['Check the Batteries widget by swiping from left to right from your first Home screen page.', "If you don't see a Batteries widget, scroll down, tap Edit, and press the + symbol next to the Batteries icon."]
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['Battery. The battery icon shows the remaining battery power. ... ', 'Battery charging. The battery charging icon shows that the battery is charging. ... ', 'Signal strength. ... ', 'Flight mode. ... ', 'Network mode. ... ', 'Call divert. ... ', 'Missed calls. ... ', 'Text/picture message.']
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Check the Alternator A simple test to check the working of the alternator is by running your car; and then unplugging the positive connection of the battery. If the car stops, then you most likely have a problem with the alternator. Another simple test is to check your interior lights.
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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: The check engine light sometimes appears when your battery power is weak.']
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Diagnosing a dead battery versus a dead alternator is relatively easy. Simply jump-start your car and then remove the jumper cables as quickly as possible. Then wait. If the alternator is failing to charge the system, the car will soon die again and you've pinpointed the problem.
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As your device charges, you'll see a lightning bolt beside the battery icon in the status bar, or a large battery icon on your lock screen. A picture of a battery colored with red indicates your battery is near empty. The level of green that appears in the battery indicates how close to a full charge you have.
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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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To check the condition of your MacBook's battery, click on the battery icon in the menu bar. You will see one of four conditions: Normal: The battery is functioning normally. Replace Soon: The battery is functioning normally but holds less charge than it did when it was new.
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['When you attempt to start the car, there is a low whining sound.', 'If jump starting gets your engine started and running, but the car will not start again once you turn it off, the battery is probably the problem.']
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['While holding down he option key, click the battery icon in your status bar (top right corner)', 'You battery health will appear at the top as either: Normal, Replace Soon, Replace Now, or Service Battery.']