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what should a 12 volt battery read

James Cunningham I have a 6v battery in my quad and i charged it up and its reading 10.7v, when i turn on the key it goes down to 2.3v is the battery stuffed or do i have a short somewhere? When a car drops, for instance, from 12.6 to 12.0, there will be 75% difference. A reading of 12.65-12.77 volts means your battery has a full charge. It is important to note that for accurate test results load testers require the battery to be fully charged. This is a common problem on your car. You might be thinking, since all you need is a multimeter, for example, Fluke 87V from Amazon.com, how dangerous can it be to test a battery? You should have your car battery tested at least once a year, preferably when the cold weather begins. The test is done with the engine off. Once it can’t... Hello. TECH A 6v battery after a charging cycle should be around 6.6 volts. The prorated warranty is for 100 mths. I charged it & its lasted another 2 mths. Before this test is carried out, you should ensure that the battery has not been charged recently. There are two ways to do this. If someone is doing this for the purpose of maintaining their battery, they are better off not starting the car at all. Had a few close calls where I thought they would be changed… so far so good. First you select 12 or 20 voltmeter scale then connect the voltmeter red positive test lead to the battery positive terminal (+) and also the black negative test lead to the battery negative terminal (-). Replace a battery if it fails a load test. Fully charged automotive batteries should measure at 12.6 volts or above. This is the method used for non-sealed lead acid batteries. You should connect the voltmeter to the battery as before but not the charging voltage and this should be done after charging the battery or jump starting the car. Asking an alternator to recharge a battery that has been discharged over the winter can lead to a cycle of dead batteries and jump-starts, until either the battery or alternator fails. 12 volts is the standard automotive battery in today’s vehicle and each of the battery has 6 cells with a voltage of 2.1. It is important that you first check the battery plus the charging system output (alternator). At Tucci Hot Rods, each build blends performance and design so well, it feels straigh…, Copyright 2020, Clarios. BatteryStuff Tech If the 8 volt charger won‘t do it, try using a 6 volt charger to bring them up to the point where the 8 volt charger can ‘read them’ and turn on. The Bosch batteries lasted 2 1/2 years like clockwork. Use our Find a Retailer for a location near you to get a free battery test. When the engine is running, this measurement should be 13.7 to 14.7 volts. For instance, a 6 volt battery will have 3 cells (3 x2.2= 6.6 volts), a 12v battery for a motorcycle for a motorcycle will have 6 cells (6 x2.2=13.2 volts) and so on. A reading of 12.10 volts means that it is halfway. This current draw can discharge a battery over time and in some cases, it may only take a few weeks. We respect your rights to privacy and will not share your email information with anyone ever. If they are dim, that indicates the lights are running off the battery and that little or no charge is being produced by the alternator. document.write(new Date().getFullYear()) 13.5 to 14.5 or more volts at idle should be produced by a charging system that operates normally. 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. For your battery to pass a load test, the multimeter must read between 9.5 to 10.5 volts straight for 30 seconds when the battery is tested. LEARN MORE. A reading of 1.229 indicates a 75% charge, 1.194 is a 50% charge, and 1.159 is 25% charged. After a load test and you discover that your battery is faulty, the problem of the damaged could be from sulphate crystal build-up, and it may be a manufacturing flaw. This last test we would discuss is necessary to test your battery’s charging system. Electrolyte gravity voltage test This is the method used for non-sealed lead acid batteries. I think the date code is 2004 or 05. The cenntenials lasted 4 1/2 years, like clockwork. 12.45-12.54 volts means you have a 75% charge, 12.24-12.29 is 50% charged, and 11.99-12.06 volts is 25% charged. 6 x 2.2 = 13.2 Batteries are best stored in cool, dry locations and that can include the concrete floor in your basement. Gel batteries are very different than AGM batteries and using a "Gel" charger setting on an OPTIMA battery may not fully charge the battery and could damage it over time. Turn on the headlights if they come on with normal brightness it’s possible the no crank problem is not the battery. He was timely and very professional and knowledgeable. When the engine is running, this measurement should be 13.7 to 14.7 volts. This type of car battery test measures the ability of the battery to produce current. You should connect the voltmeter to the battery as before but not the charging voltage and this should be done after charging the battery or jump starting the car. Order Line: 1-800-362-5397 M–F 6 AM–5 PM PST / Tech Help: 541-474-4421 / Fax: 541-471-6014, Email address should be formatted user@domain.com. If your battery is sitting at 10.7 volts that leads me to believe the wrong charger is being used, or the charger or charging system is malfunctioning. With 11.90 your battery is low and in desperate need of a boost. Even though it was night time, I felt safe. The guys got my vehicle running after they installed a battery. Consider your car battery charged at 12.4 volts or higher and discharged at 12.39 volts or less. 1.124 means you have a dead battery. In case the battery has a reading of 12.4 from the voltmeter, it means it is low (discharged) and should be recharged. The average duration a car battery can last is 4 to 5 years or even 3 years in hot climates such as Arizona and Florida. Car Battery Load Tests Fully-charged, our REDTOPs (including 34M BLUETOP) will read approximately 12.6-12.8 volts and our YELLOWTOPs will read approximately 13.0-13.2 volts (including BLUETOPs with light gray cases). If you’ve been experiencing problems with your battery system and the headlight test checks out okay, you should check whether or not the battery is holding a charge, or if something on the vehicle is discharging it. Both methods require a standing period of time for best accuracy. Any reading of voltage below 9.5 volts, or if the battery holds a good record for a while and steadily drops, or even when it falls instantly to 0 volts, then it means there is a problem, and the battery should be replaced due to its low capacity. Thank you. There is a very big difference when a car battery drops even a small amount of voltage. It is perfectly normal, in fact, healthy for this to happen. YourMechanic All rights reserved. If it reads 12.6 volts, the battery is just attaining a fully charged state. Fully-charged, our REDTOPs (including 34M BLUETOP) will read approximately 12.6-12.8 volts and our YELLOWTOPs will read approximately 13.0-13.2 volts (including BLUETOPs with light gray cases). Many modern computer systems and electrical accessories will draw some current, even when the key is removed from the ignition. Now push the start button of your bike it doesn’t matter if it starts or not, just watch how the reading on your multimeter drops, those readings are what you need.

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