Power leaks are not the only causes of power drain on automotive batteries. Corroded, loose or damaged terminals can prevent the alternator from charging the battery. Answer: Check for a parasitic drain, or a possible fault in one of the electrical systems. I love sharing everything I learned about car care over the years. Usually, there are four to six studs on each wheel. Improperly disposing of your battery may lead to fire and dangerous chemical leaks. Could it be that my alternator is draining my battery? Question: Can l recharge my 12V battery with a 60W solar panel in order to reach 12.6V that shows 100% charge? If it is a case of faulty wiring, you should get an expert to take a good look at your vehicle’s electrical system. What causes this. These should only be removed by a qualified service technician. What is the problem with my Yukon's battery? Since electrolyte is heavier than water, a hydrometer test can be used to tell whether your battery is charged, discharged or ruined.You'll do this test using a hydrometer, an inexpensive tool you can buy at most auto parts stores or online. The negative terminal may be attached directly to the metal body of the car. If you recently installed or upgraded equipment or modified a circuit, isolate that circuit by pulling its fuse and check amperage draw. This tells us the amount of energy that potentially exists to move electrons from one of the points to the other. The implications are pretty straight forward. Modern serpentine belts won’t show signs of wear. When regular car batteries get fully charged, its reading will be about 12.6 volts. He put one of those sleeves on it and just squeezed it together. If your battery's voltage still is low, it may be time to replace your battery or you may have an alternator problem. You might want to check for parasitic draws. A fully charged car battery has 12.6 volts. Answer: It could be the circuit itself - if you haven't measured any drains, have the battery checked. Unfortunately, you can't do without them when doing some simple diagnostics. Learn How You Can Maximize Your Compensation, 4 Blue Frenchie Fun Facts You Probably Don’t Know, 4 Most Common Car Accident Injuries You Might Not Even Know You Had, Everything You Need to Know About Getting a Warranty on a Rebuilt Title. Once you have your car battery on a bench. If possible, get a hydrometer that incorporates a thermometer so that you can compensate your readings to ambient temperature. When a car drops, … It is very important to properly dispose of your old car battery. Alternators use diodes (in a rectifier) to direct current flow out of the alternator and prevent that current from flowing back.But diodes can go bad. But these small normal parasitic loads can turn into power drainers if you leave your car parked for a few days without starting the engine. It's worth carrying a portable jump start pack in your car for emergencies – our test of the best can help you choose. Whether your car is hard to start when cold, hot, or both, this guide gives you tips and tests to help you fix your car sooner. This other post may help: Question: I have a carbureted engine in my Honda SX8 1997. If the battery has removable caps, be careful not to let the cleaning solution seep into the battery, or it may get ruined. Your car owner manuals may give you the normal parasitic load for your car model. It's possible you have problems with the battery itself (see the "state of charge" table below). Also, try checking the voltage drop in the ground side, if necessary. My car is killing batteries I was buying 2 battery's the past 2 months I don't know a problem. These sparks can be minimised by connecting the terminal lead quickly and accurately. Remember that this is not a valid reading since the alternator is actively charging it. Always ensure the car’s battery leads are attached to the battery throughout the charging process. Can I File a Lawsuit After Falling Down a Flight of Stairs? If the vehicle starts right up and you don’t have the problem with the battery being drained down anymore, then clearly there is something in the vehicle that is draining the battery down. These are the same charging terminals that you’d earlier attached the battery tester to. Dead 12 Volt Battery Of Voltage Range – Is It Dead As A Car Battery? You'll need a diagram to trace the voltage in the circuit and find the fault. Varun Katariya from New Delhi on July 26, 2017: Thanks for the post. Your meter should read between 13.5 and 14.5 volts (consult the. Prepare a mixture of 8 oz of warm water and a tablespoon of baking soda in a small container. This other post may help: Question: I have a 2001 Yukon that I have bought two different batteries and two different alternators for. The accepted level is between 50 and 85 milliamps on newer models. You may want to have the alternator tested. The price of lead-acid car batteries is from $50 to $300. The labor for battery replacement is obviously $0 because you will do the work. Obviously, the solution will depend on the problem. Hydrometer results are a general indication of the state of health of your battery. Winding can cause a battery to drain. This will be chucked down to simple wear and tear that comes with aging. They range from basic types that simply give a green light if the battery is charged, to models with a display that shows the exact voltage of the battery. Question: How do you test if an alternator is bad? Highway Rear-End Accidents Often Cause Serious Injuries. If you need to confirm or do further tests, you may want to have a shop perform a battery load test. If your battery reads below the recommended voltage it must be recharged. Engine operation problems can also cause excessive battery drain during cranking. Continue with the following tests. This means in turn that the battery has difficulty supplying power to the starting and fuel injection systems and other circuits during cranking and start up time. You should measure right on the battery posts and then again on the cable terminals. Photo courtesy of Santeri Viinamäki on Wikimedia. Around 12.7v is a good indicator of a fully charged battery. If is is lower on the terminals you have a bad connection usually caused by corrosion, which is very common. Answer: It's probably one of the modules that are taking time to shut down. You will scare most people off. Answer: If it only happens when starting the engine, the belt might be slipping or an idling gear or tensioner (depending on your particular model) might be getting stuck and getting "unstuck" when revving the engine. If your computer loses this information, the relearning process may take hundreds of miles of engine operation. So let's find out why your car battery doesn't hold a charge. Improper Voltage. The reason for that is there’s a surge of current going into the vehicle charging up capacitors, powering circuit boards, and usually that current is under 1 amp (usually 300 to 750 milliamp), and then after a set duration maybe around 15 seconds or 20 seconds, that current should drop to a level between 25 and 50 milliamps. Have you ever had issues with your car battery? When your engine starts but stops, concentrate your diagnostic efforts on those systems or components most likely to cause the failure. Check for this to ensure you did not mistakenly leave something on through the night. It could be improperly installed, even if it is working, or an insulated wire is damaged and causing trouble like touching a metal component. If you get the same readings (and problems) after charging the battery, you may want to take the battery to a shop for a battery load test. NOTE: If your battery becomes really hot while you charge it, disconnect it from the charger immediately! Question: Very recently, I changed my fan belt after it tore while moving, but I replaced it with a standard one and tighten it. This other post may help: I have a scorpio car model 2005. since last 2-3 days my battery is getting down. Often, when I start the car I detect the battery warning light, after cranking the engine, most of the time when cold. Under What Circumstances If Your Partner Entitled to Spousal Support Benefits? Some chargers also have a built-in battery tester. Consult your vehicle repair manual; it might tell you how to do some quick alternator checks. Use a car battery hydrometer on a dead car battery or suspected bad car battery to learn its state of charge and health in minutes. It killed some of my wrings (some relays had been checked and replaced). Supplying Batteries Big and Small Check for battery leakage (and fix any leaks). Sometimes, though, the battery is too run down to unlock the doors. Touch the battery top at different places with the red meter lead. And the problem may cause battery power to drain back into the alternator when the engine has been shut off, leaving you with a discharged battery. If you ever notice that your car isn’t starting as quickly or easily as it once did, this may be a pointer that the battery isn’t performing as it should be. Many times, problems with a battery that will not hold a charge can be traced to poor battery maintenance. Set the meter to DC current, have it on 10 amps. There may be a problem in the starting system. Posted September 12, 2019 by Liz & filed under Cars. One of the most annoying things a car owner can experience is leaving your car with a full charge one day and trying to start it the next day only to discover that the car won’t start because the battery’s voltage has dropped so low during the night. However, before disconnecting the terminals from the battery, you may want to use a memory saver to keep the computer memory alive and other electronic devices settings (see the Saving Your Computer Memory box below).If you don't want to buy a memory saver now, you can use a 9V battery instead.