Accurate Multimeter 17205 Manual
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November 1, 2007 Clark Brothers Instrument Company has been honored by Inc. Magazine as one of the 5,000 fastest growing privately held companies in the United States for 2007. To review listing. We thank all of our loyal customers and staff for their support which has allowed us to achieve this prestigious award.
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Dating back to the 1940’s Accurate Instruments has been a well respected and recognized provider of Automotive Test and Tune equipment for automotive repair shops and DIY applications. Since our acquisition of Accurate Instruments in 1996 we have been proud to provide these products to quality companies such as NAPA/Balkamp® and other automotive retailers and distributors. Currently this product line includes Multi-Meters, Compression Testers, Engine Analyzers and Timing Lights.
All of these products carry a two year warranty.
This guide tells you how to use a digital multimeter (or voltmeter) or a hydrometer to do some simple tests to find out the condition of your battery. It'll also show you how to remove, clean, and reinstall your battery. If you are having trouble starting your car, or trouble keeping your battery charged, your problem may be in the starting or charging system, but it is often in the battery itself. A worn-out battery, corroded terminals, acid buildup, and battery case damage are among the main culprits behind starting problems and charging system problems.
Accurate Multimeter 17205 Manual
Here are two methods you can learn the state of your battery using simple diagnostic tools. The first method is to use a digital multimeter to quickly check if your battery has enough charge to start your car.
This is the best way on so-called maintenance-free batteries, which don't have removable caps. Some maintenance-free batteries come with a charge indicator, a display on the battery top that tells you if the battery is fully charged (green dot), in need of a charge (no color visible), or faulty (yellow dot). The second method uses a hydrometer. Unlike the digital multimeter, the hydrometer can reveal not only the state of charge of your battery, but also its overall health. You'll know if your battery has failed. But you can only use this tool on batteries with removable caps.
You can buy an inexpensive hydrometer at most auto parts stores or online. How to Test Your Car Battery's Charge Using a Multimeter You can use your digital multimeter to find out in a minute whether your car battery has enough juice to get your car going. First, set your voltmeter to 20 DC volts. See the video below. Touch the negative (black) battery terminal with the negative (black) meter probe. Touch the positive (red) battery terminal with the positive (red) meter probe.
Ask an assistant to turn on the headlights to provide the battery with a light load. Check your voltmeter reading.
At a temperature of about 80°F (26.6°C). Using the Hydrometer to Test the Battery Fluid. Remove the caps from the top of the battery. Submerge the tip of the hydrometer into the first cell of the battery and squeeze the hydrometer bulb. Release the bulb to allow electrolyte to enter the hydrometer needle.
Read the electrolyte specific gravity as indicated in the instructions on the tool's package. Make a note of your reading and perform the same test on the rest of the cells. Compare your results to those of your tool manufacturer's instructions. Basically, if your readings fall between 1.265 and 1.299, your battery is charged. When your readings fall below 1.265, your battery is undercharged.
In most cases, a slow or trickle charge will help restore the charge and improve the chemical reaction in the battery. However, a difference of 25 to 50 points or more (a point equals 0.001), between any of your readings indicates that the battery is sulfated and you need to replace it.
Dirty, corroded, or loose battery terminals will lead to hard-to-start or no-start issues, and are one of the main reasons people think they have a 'dead battery.' Sometimes these types of problems are hard to spot with a simple visual inspection. Here, you'll use a voltmeter (or a multimeter set to voltage) to check your battery terminals for voltage drop, so that you can understand the state of your battery connections. First, disable the ignition system. Do this by temporarily disconnecting the ignition coil or removing the fuel pump fuse or relay (check your car owner's manual or your vehicle repair manual to locate the coil or fuse, if necessary).
This will prevent your engine from starting. With your meter's red probe, touch the positive battery post. Now, touch your meter's black probe to the cable terminal connecting to the same battery post. Ask an assistant to crank the engine.
If your meter registers over 0.5 volts you need to clean or check the physical condition of the battery post and terminals. Now, test the other battery terminal. This time, though, with your meter's black probe, touch the negative battery post. Now, touch your meter's red probe to the cable terminal connecting to the same battery post. Ask your assistant to crank the engine and check the voltage reading on your meter. If it is more than 0.5 volts, you need to check your battery terminal for damage, or clean it.
A buildup of deposits on the battery cover is a common cause of what seems to be a 'dead' battery. As dirt and acid mix and accumulate across the top and terminals, the charge slowly begins to leak. To check whether your battery has reached the leaking point, use a multimeter. Set your voltmeter to a low setting on the voltage scale. Turn on the voltmeter.
Then touch the battery negative terminal (-) with the black probe from your meter, and touch the dirty battery cover with the red probe. If your meter registers even a small amount of voltage, buildup has begun to leak battery power.
Head to the section below on 'How to Clean a Car Battery' to remove the leak. If you get zero volts reading from your meter but you still suspect that some electrical device is draining power from your battery—a 'parasitic draw'—check this other article, to locate the circuit and the device discharging your battery. Now it's time to check the physical condition of your battery case. A damaged battery case can not only prevent the battery from working properly, but will eventually kill it. To check the battery, you'll need to remove it from your vehicle.
First, disconnect the battery cables starting with the ground terminal and then the positive terminal. Now, unscrew the hold-down mechanism to remove the battery from the tray. Make sure the hold-down mechanism works. If there's missing hardware, replace it.
This hardware prevents the battery from bouncing and getting damaged when the vehicle is moving. Place the battery on a workbench or similar surface. Carefully examine the battery case for potential damage.
Check for a bulging side or cover, cracks around the case, or damaged terminal posts. If your battery is damaged in any way, replace it. Overcharging and internal short circuits will cause a battery to swell as the acid turns to gas.
So if you find signs of bulging, check the charging system as well. Now, check the battery cables. Check for frayed, cracked or worn insulation around the cables and the condition of the cable threads. Replace them as necessary. Cleaning the Battery Case You can use a simple procedure to clean the battery case. For this, you'll need to prepare a mixture of 8 ounces of warm water and one tablespoon of baking soda.
This will neutralize acid and help lift up dirt off the battery case and terminals. Put on your goggles and rubber gloves and, using a soft brush, apply the solution across the battery top and around the sides of the case. If your battery uses cell caps (maintenance type batteries), don't let the mixture seep under the caps and mix with the electrolyte inside.
Wipe the solution using a clean rag. Continue applying the cleaning solution until you see no signs of buildup. Cleaning the Battery Terminals Just as you did with the battery case, remove dirt and corrosion off the battery terminals using the baking soda and water solution. To make your task easier, pour the mixture into a foam cup or similar disposable cup and dip the battery terminal in it for one or two minutes. Then use a battery-post cleaning tool to finish removing the corrosion from the terminals. Repeat the procedure until you see both terminals free of corrosion.
Cleaning the Battery Tray Inspect the condition of the battery tray. Make sure it has no missing screws, no cracks or missing pieces, and no signs of corrosion. If necessary, use the same solution to remove dirt and corrosion from the tray. If your tests showed your battery to be in good health, you may have a problem with the starting or charging system. This other article on shows you how to do some quick tests without using tools. Once you know how to check your car battery for problems, you'll service the battery faster next time around.
And servicing your battery regularly goes a long way. You can make sure your battery provides all the necessary power to the starting system, ignition system and other important electrical circuits as necessary, especially during the cold months. Even more, with a little maintenance you'll help prolong the service life of your battery and stretch your car maintenance budget. Show Details Necessary HubPages Device ID This is used to identify particular browsers or devices when the access the service, and is used for security reasons. Login This is necessary to sign in to the HubPages Service. Google Recaptcha This is used to prevent bots and spam.
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