Car battery reading 15 volts

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August undefined, 2024

WebWe would like to show you a description here but the site won’t allow us. WebJan 22, 2011 · 2,540 Posts. Discussion Starter · #16 · Nov 20, 2010 (Edited) Update: So I checked the voltage this AM before starting the car and it was a flat 12.0V. It did not change with the radio off or on. The "15.1V battery OK" is rather new. I think it has typically been in the 14s prior to the last couple of weeks.

13.5V alternator when driving and idling Bob Is The Oil Guy

WebDec 28, 2024 · A fully charged car battery voltage (without being plugged into an external device) ranges from 13.7 to 14.7 volts. It will drop to 12.4 volts when the charge is 75% and 12 volts when it is at 25%. A fully … WebDec 28, 2024 · A fully charged car battery voltage (without being plugged into an external device) ranges from 13.7 to 14.7 volts. It will drop to 12.4 volts when the charge is 75% … redmond firearms

Alternator is putting out 16.3 volts - Car Talk Community

WebNov 23, 2004 · If the 12.21-12.28 V is a dead battery. Junk it. 12.6 isn't all that high so it may not be fully charged. In a car it will flucuate. Your alternator can run up to 15 volts so no it won't damage the alternator. The alternator charges the battery at a constant voltage usually around 14.5V which is how it should be done. WebOct 11, 2024 · I found a brand new oem alternator (not refurbished) on Amazon for 160.00 plus 27.00 shipping. I'm going to replace it and see is this lowers the charging voltage or … WebThe same is true when measuring battery voltage to determine if a battery has gone bad. Fully-charged, most car batteries will measure at least 12.6 volts (~13.0-13.2V for OPTIMA YELLOWTOPs), but low voltage doesn't … redmond fire and rescue redmond oregon

Is 15V too high for a standard car battery? - Quora

WebApr 9, 2024 · 2009 GMC SIERRA. 4.8L. V8. 4WD. AUTOMATIC. 139,000 MILES. My truck is a 1500. The voltage will read 15+ volts once in a while it will drop to normal 14 volts but a couple times it would drop to 12 … WebJun 5, 2012 · If your battery is: Reading 0 volts, chances are the battery experienced a short circuit; Cannot reach higher than 10.5 volts when being charged, then the battery has a dead cell; Fully charged (according to the battery charger) but the voltage is 12.4 or less, the battery is sulfated; Sulfation is the natural byproduct when the battery discharges. redmond fire district 34WebMar 15, 2024 · It's not 50/50. At 12.0 volts there's much less than a 50% chance that a known good battery will crank the engine over. Remember, 12.0 volts means 0% charge for a known good battery. At 11.0 volts, the chances of the battery actually cranking over the engine are very, very low. richardson ranch

"WebThere are two things that you are looking for. The charging voltage should be between 13.9v to 14.4v. Also the voltage at the battery and the voltage at the alternator should be within 0.5v of each other. If the voltage at the battery and alternator don't match. For example the battery reads 12v and alternator reads 14v. " - Car battery reading 15 volts

Car battery reading 15 volts

My battery is charging 15 Volts. Is that too much? - Fixya

WebJun 20, 2024 · The battery gauges on most vehicles I have owned stays around 13 to 14 volts and doesn't move much unless something that consumes a lot of power is turned on. Mine does this with nothing additional running on the truck other than the radio and a/c. This morning the needle was about 1 volt below (13 volts) the middle mark (14 volts) on the …

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WebThis will tell you the car’s voltage. It should be sitting between 12.6 and 12.8, though it can be a little bit lower depending on the weather. If the voltage is above 12.8, you should … WebJan 25, 2016 · Yesterday my car didn't start, battery low, 15 degrees outside. Called AAA and they checked the charging system and didn't see a problem but suggested the …

Feb 25, 2016 · WebFeb 23, 2024 · Test the battery voltage. Turn off the ignition and any accessories like lights or the radio in the vehicle. If your multimeter is not autoranging, set it to 20V DC. Place …

WebSep 5, 2024 · Final possibility (I think), if the battery is reading 12.5v while running with minimal accessories then it could be a bad/weak alternator. Generally voltage at the … WebJun 25, 2024 · Note: Alternators usually come equipped with a way to bypass the regulator in order to measure the output voltage with full field applied. This “full field test” is for test purposes only, but if your alternator was set up in that mode it might put out 16 volts. See page 4 in the link above.

Nov 30, 2015 ·

WebJun 11, 2024 · So, to answer your question, Yes, 15 volts is too high. Most car alternators, that normally recharge your battery after every start, and provide power while the engine is running, are normally voltage regulated to about 13.8 to 14.0 volts. Up to this voltage … redmond fire departmentWebJan 2, 2014 · The voltage recovers to one degree or another once the load is removed. Note that a "12 V" battery voltage of 10.5 V under load is considered fully discharged. A 5 V reading means a very weak battery, a very cold battery, a very heavy load, or some combination of these conditions. redmond fire department station 12WebDec 23, 2009 · 15 volts,is a lot,but not to much to worry about,just make sure the connections on the battery are good,and have the battery checked real good,to make … richardson rapid estimating systemWebJan 19, 2024 · Jan 18, 2024. #12. AGM for automotive use will read higher than traditional lead acid. My Oddesey battery (AGM) for the Journey used to read 12.8ish volts fully charged using their brand of charger. Make sure your battery tender is rated for AGM, if volts exceed 14.7 it can damage the battery. richardson ranch vetWebSep 5, 2024 · Final possibility (I think), if the battery is reading 12.5v while running with minimal accessories then it could be a bad/weak alternator. Generally voltage at the battery (after 10-20 min of alternator charging) should be around 14.1~14.5v. If it's more than 1-2v volts lower, then probably bad alternator function (which can be caused by a ... redmond fire trainingWebSep 23, 2024 · September 23, 2024. Tom Harbid. Fully charged car batteries usually measure at around 12.6 volts or above, with some instances of your car battery … redmond fire department twitterWebFeb 14, 2024 · Today I measured the battery: After being parked overnight: 10V When car running after boost: 14.5V When car turned off after less than 5 minutes running: 12,5V 2 minutes later, back to 10V again. I did not understand how it could go from 10V to 12.5V after less than 5 min charging by alternator. richardson rd nanaimo