Connect the meter leads to the battery terminals and look for. It is always best to charge a dead battery with a battery charger prior to putting an. Battery or alternator how to tell which one is bad and qanda duration. A dead battery top 10 signs of alternator problems.
Apr 26, 2017 overcharging a battery occurs when the total capacity removed has been replaced by recharging and the battery remains on charge. An overcharging alternator can boil a battery dry, so if your battery gets low on electrolyte, making you add water to it, or if you car eats batteries, you may have an overcharging alternator. Why is my car battery hot to the touch scanneranswers. Failing alternators, weak batteries, and engine bay temps. How to fix an overcharging battery problem on your rv. If an automotive alternator question misses the assertion of where the alternator is, and what drives the alterntor, is deemed to be overcharging, then you need to look at all of the things that can cause a reduction in current. So, as he is a good mechanic, diagnosed it saying that the alternator is overcharging the battery causing the bubling and associated oddities.
It sounds like to me your newish battery may have gone bad. By continuing to use this site you consent to the use of cookies on your device as described. Alternator overcharging maintenancerepairs car talk. A few problems can result when an alternator undercharges or overcharges the electrical system. Only a periodic fully saturated charge can solve the problem. Not typically, but using the wrong charger for your device can cause your battery to malfunction. The alternator in your car is a vital part of your electrical system. Terrys auto electric march 27, 20 my alternator is overcharging my battery and my battery smells like rotten eggs and i have had the alternator tested several times and they say that the alternator is working fine. Why alternator is overcharging bat answered by a verified mercury mechanic we use cookies to give you the best possible experience on our website. Learn how to optimise the life of the battery in your mac notebook, fix battery issues and get service. How to fix an overcharging battery problem on your rv maintenance. I have repeated and heavy bluewhite battery terminal corrosionespecially on the positive post, but has also migrated to the metal battery tie down.
So my battery has gone dead every time i go more than 36 hours or so without driving it. This condition is dangerous to your cars battery and electrical system. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. When you change out a bad battery, be sure to obtain a replacement that has the cold cranking amps that your auto needs. Clicking this will make more experts see the question and we will remind you when it gets answered.
How to care for the battery how to rate battery runtime teslas iphone moment how the. If your battery is fully charged, the voltage regulator allows a minimal amount of power to pass through to the system your cars wiring, battery, etc. How to test alternator with a voltmeter alternator test with a voltmeter if its in the range, its good. Lcd iphone screen fix kits the budget option, covered by our lifetime warranty. The guy said that my alternator may be bad and may have overcharged my battery.
Check what those guys mentioned, but also a battery with defective cells could also appear as an over charged battery. There is no problem charging an iphone with a charger than can. On many fords the alternator has a smart charge system that regulates the output of the alternator to ensure the battery is being charged efficiently, reducing emissions and improving. Will overcharging my phone cause the battery to swell. With the engine running i read anything between 12. Jul 26, 2016 on the other hand, the battery can chemically react in a way that causes solid material to build up inside. A properly working alternator can often recharge a dead battery by running the automobile for a period of time. I have a 2 wire alternator and it looks fairly new i got it from one of my buddies because we thought minds was bad. Without the alternator, the battery will eventually discharge. Motor car alternators include a rectifier and a regulator that is supposed to prevent battery overcharging.
Some of the auto parts suppliers offer free alternator and battery. Could overcharging be causing your battery to swell. My boyfriend checked the voltage on the battery with engine running and was reading 15. The defective cell will reduce battrey voltage, the regulator could interpret that as an undercharged battery and ramp up charging amperage to compensate, there by overcharging the remaining cells. Mike beltz, i assume you are talking about an alternator for a vehicle. Additionally, an incorrect replacement battery in the vehicle can cause an overcharging condition.
If your alternator is overcharging your battery can you just get a new. Why you shouldnt charge your phone in your car business insider. And by the way, heres how to tell which apps are draining your phones battery. You could completely remove the alternator from the car and your engine would still start and run normally until the battery went dead. Mar 31, 2017 on many fords the alternator has a smart charge system that regulates the output of the alternator to ensure the battery is being charged efficiently, reducing emissions and improving. Restarting your iphone probably wont fix the problem of battery drain with ios completely, but its likely to give it a bit of a boost. Mar 02, 2007 the alternator makes a constant output of around 1618 volts of dc, which it sends to the voltage regulator to administer to the system asneeded. On the other hand, the battery can chemically react in a way that causes solid material to build up inside. Acid stratification occurs if the battery dwells at low charge below 80 percent. Alternators that overcharge will typically produce excess voltage to the battery, making the battery case swell up, become very hot and lose its electrolyte through boiling. It typically does this with either a series or a shunt regulating element.
How can you fix an alternator that is overcharging. A shorted diode in the alternator can still allow a charging voltage of up to. There are many possible reasons, but in this video is focuses on one in particular. Hold down the side button and the up or down volume button. Sulfation and how to prevent it battery university. Ford smart charge system alternator not charging youtube. Why would an alternator start to overcharge the battery.
Dec 17, 2016 cause of overcharging an iphone 7 sameer kumar. If your vehicle wont start, its usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter. This surge disrupts the wiring in the alternator, causing an overcharging condition. In this tutorial, the rv doctor explains what may be the problem behin a battery that is continually overcharging.
Phone chargers usually provide a 5v supply and tablet and laptop chargers can be 20v or 25v. It runs continuously at the 14vdc range to continue to provide all the power the car needs as well as keep the battery charged. Review battery charge and discharge rates and read about different. Why is my alternator not charging alternator ifixit. The alternator makes a constant output of around 1618 volts of dc, which it sends to the voltage regulator to administer to the system asneeded.
Since most automotive applications have the alternator bolted to the engine block, i would look at corrosion of the charging circuit back to the battery. So if you need help, check out the video above and good luck. So i had my battery tested and when they pulled it out there was old battery acid all over the bottom of it. If you have a problem with an overcharging battery on your rv, you may want to tune in for this video. Overcharging alternators cause battery damage when a vehicles engine runs, the alternator generates electricity for the battery. If this happens, charge the battery out of the car to confirm it is still good.
How to test an alternator for overcharging it still runs. Improperly jumpstarting the vehicle can send a surge through the battery that destroys one or more cells in the battery or shorts it out. Charging your phone could even drain a cars battery, especially if its an older. This overcharging creates excessive heat which can cause the battery plates within the cells to buckle and shed their active material. You can also charge up a dead battery with a battery charger.
If your vehicle wont start, its usually caused by a dying or dead battery, loose or corroded connection cables, a. The rapidly falling electrolyte levels indicate over charging. Use caution, however, as a dying battery can only receive a charge for so long and may go completely dead at a later point despite the best efforts of the alternator. Generally then the answer is no, fix the alternator. This has to do with my 99 z28, the car ever since i bought it has had a low alternator output at idle with the ac on, in the summer time itll read about 11v on the gauge on the dash, basically just above or at the red zone line, to cure this i installed an alternator from mechman alternators, its a 170amp model, my problem is the alternator is pegging the volt gauge on the dash at first. So, as he is a good mechanic, diagnosed it saying that the alternator is overcharging the. But when they put it on the tester, they said my battery wasnt bad.
What happens if you overcharge an iphone 5s battery. Overcharging a lead acid battery can produce hydrogen sulfide. I connected a battery charger to the battery and i replaced the alternator with a spare vs one i had lying around. Among our small jigging fleet batteries and alternators are constant. You can test the battery with a voltmeter, and most auto stores have the facilities to check a suspect battery, usually free of charge. We use voltage drop testing to locate a bad ground. You can test to see if the alternator is overcharging, using a simple voltmeter. Overcharging a battery can build up a lot of heat in the battery, and either destroy it, or shorten its life. Long story short i got the alternator checked and it confirmed that it was overcharging the battery however are all of the above symptoms related to the cluster dials cutting in and out usual alternator symptoms that come with the problem. How to inspect your car alternator and fix it if its bad. Last week i found out that the alternator was overcharging charging at around 15. Changed the old mechanical voltage regulator to mp blue p3690732 regulator and now the alternator is over charging.
Overcharging a battery occurs when the total capacity removed has been replaced by recharging and the battery remains on charge. The alternator is 65amp 70up model with 2 field connections. If you are still experiencing charging system issues, then the battery is suspect. If your battery is draining quickly or your battery light comes on for no reason, you probably have a bad alternator. How to repair your own alternator with simple tools. Can my alternator overcharge my battery, causing my battery. But unless youre desperate, charging your iphone during your commute. Water loss, acid stratification and surface charge battery university. The voltage regulator in the battery blew the 10amp fuse in the junction box. Why you should stop charging your phone in your car readers. How to fix an alternator that is overcharging quora. If the series element goes short circuit or the shunt one open circuit then it stops being a regulator. In both instances the battery will swell beyond its normal shape. However, if the alternator isnt working correctly, it may send too great of a charge to the battery, which is known as overcharging.
I did so today and im being told that the alternator is overcharging my battery. If the battery is defective theres no way to fix the battery must just replace the battery. Do check that the alternator you are using is correct for your car battery and not working at a very high pace and causing overcharging. Rick muscoplat, an automotive expert at family handyman, will show you how to test your alternator.
I have a 2 wire alternator and it looks fairly new i got it from one. Watch this video to learn how to assess problems with the alternator and fix them yourself. When an alternator tries to charge a dead battery it must work at 100% capacity, but an alternator is designed to work at 100% for only short periods of time due to the heat it produces. Since most automotive applications have the alternator bolted to the. How to test an alternator if you have a newer battery, but your car wont start, you may have a bad alternator.
If your alternator is not charging your battery and battery and all connections are good, chances are the alternators built in voltage regulator is faulty. I recently got a new battery within the last 2 months i find it hard to believe. It is always best to charge a dead battery with a battery charger prior to putting an alternator into operation. Check for 12v in exciter wire when the ignition switch is on. I replaced the alternator with one that i got from a salvage yard to save money but it is still over charging at the same voltage. Alternators that overcharge will typically produce excess. They want about 700 dollars to fix it replace alternator and battery since its been being overcharged. The alternator needs to be charging the battery between. Alternator repair,bad alternator,diagnose symptoms repair problem. How to test an alternator with one tool the family handyman. This electrical input is carefully balanced to keep the battery from running out of juice. My car is overcharging its reading 16 volts at idle and 18 when i give it some throttle.
555 1527 1268 35 186 778 239 236 1276 23 745 580 261 214 972 967 179 1327 1360 504 1028 861 1483 1167 547 1398 1291 1074 1252 419 1211 78 693 1218 279 404 100 621 228 1184 49 176 472 228