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How to check laptop battery charge and overall health Posted by admin

April 24, 2014

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1 Notebook batteries are one of the weak links in laptop computers. When you’re away from power outlet, your ability to use your computer is completely limited by the amount of battery power available. After two or three years of use, the original laptop battery performance gets bad enough, you’ll need to replace one new battery. Today AussieBatt laptop battery experts show you how to test laptop battery’s charge and overall health, and by doing so you can help avoid unwanted surprises.

Checking Laptop Battery Charge with a Multimeter Step 1 Fully charge your laptop battery

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Turn off your laptop and remove the battery. Look for a voltage rating printed on the battery. This will be the number to compare with your multimeter reading. Many laptops have voltages of 9.6V, 10.8V, 11.1V, 14.4V or 14.8V. Some have lower or higher ratings.

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Step 2

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Step 3 Look for the connector where the battery interfaces with the notebook. It will be near the center of the side of the Asus A33-m50 Laptop Battery that faces the computer when plugged in. Roughly an inch in length, it should resemble a series of at least five very narrow, identical slots that looks a little bit like your laptop’s exhaust fan grating, except smaller. The outermost of these slots will be the positive and negative terminals of the battery.

Step 4 Turn on your multimeter and set it to measure direct current voltage on the 20-volt scale (or anything close to 20 volts). Voltage settings are indicated by the letter “V” and direct current voltage settings are indicated by straight lines near the V, as opposed to wavy lines for alternating current.

Step 5 Insert one prong of your multimeter into the outermost slot on one end of the battery connector. Insert the other prong of your multimeter into the other outermost slot on the connector. It doesn’t matter if you match your positives and negatives. If you get them backward, it will just change the sign of the voltage, not the actual number, and the number is what’s important. Make sure each prong is touching bare, exposed metal.

Step 6 Observe the reading on your multimeter. A fully charged, healthy laptop battery will measure very close to the printed value on the battery.

Step 7 Try measuring your battery’s voltage after a 60- to 80-percent discharge, to get a comparison against the full charge value. A depleted laptop battery won’t measure anything close to 0V. There will still be several volts in it. What happens is that, once the battery drops below a certain voltage, your computer automatically shuts down. This is because if the voltage drops too low the battery will become damaged. Protective circuitry in the battery will then make it impossible for you to use a dead battery.

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Checking Notebook Battery Charge in Windows Steps

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Step 1 Click on the Windows button to open the Start Menu.

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Look for a search bar that says “Search programs and files” at the bottom of the Start Menu.

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Step 3

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Type “Windows Mobility Center” into the search field. When the results come up, click on “Windows Mobility Center” in the Programs section at the top of the results. Windows Mobility Center has various indicators to show whether your laptop is mobile.

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Step 4 Look for the “Battery Status” indicator. This shows you what percentage of HP 530 laptop battery power you have remaining. If you typically keep your laptop plugged in, it should read close to 100 percent.

Instructions for Checking Laptop Battery Overall Health Step 1 Fully charge your laptop battery

Step 2 Turn on your computer, unplug it from the power outlet and run on the battery only.

Step 3 Get a sense of how fast the battery is draining. A healthy battery should last roughly as many hours as it says on the package. An unhealthy battery will drain much faster. Don’t drain the battery all the way for this test, but about halfway instead. Once your battery drains too fast for you to get practical use out of it, it’s time to get a new one.

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