What Should Car Battery Voltage Be At Idle

What Should Car Battery Voltage Be At Idle. With gm vehicles of the time period we speak of gm has issued a tsb that states an indicated low voltage situation at idle when many electrical systems are in use is to be considered normal and no repairs should be attempted. The good news is that yes your car battery will charge when idling.

How Long Does It Take To Charge A Car Battery While Idling
How Long Does It Take To Charge A Car Battery While Idling from howget.abravoalpacas.com

In an ideal situation, the voltage will read somewhere close to 14.4 volts but it will stay at this number and won't continually fluctuate. Then the battery will be. When i replaced it i instantly saw over 14 volts when car is on.

14.8 Would Start To Be A Worry (There Might Be Liquid Or Corrosion On The Battery) And 15 Volts Would Be A Real Concern, But 14.6 Is Fine.


If the battery isn't fully charged, it will diminish to 12.4v at 75%, 12v when it's only operating at 25%, and down to 11.9v when it's completely discharged. With the engine on, your vehicle will idle, maintaining a steady draw from the battery. If the electrical load is minimal;

If The Voltage Reading Is Significantly Lower Or Higher, It Could Mean Issues With The Battery Or Alternator.


If the alternator is putting out too much voltage (15+ volts), it is likely your battery acid will boil over out of the battery. Does the battery charge when idling? If it's less than that your battery is either weak or discharged.

The Good News Is That Yes Your Car Battery Will Charge When Idling.


With gm vehicles of the time period we speak of gm has issued a tsb that states an indicated low voltage situation at idle when many electrical systems are in use is to be considered normal and no repairs should be attempted. Save on your next car battery. A fully charged battery should read 12.6 volts or more with the engine off.

Even That Is An Approximation.


It is essential that you let your car sit idle for a night and measure the "resting voltage" to get an accurate voltage measurement. When i replaced it i instantly saw over 14 volts when car is on. Ignoring it will only make it worse and a faulty alternator will slowly damage the battery.

Im Seeing Down To 12.4V At Idle With Fan And Lights On.


When the car is at idle, the voltage reading of the battery should range between 13v and 14.6v. If you have a voltage test meter, start by measuring the voltage at the battery, it should be about 12.5 volts. In that case, most likely,between 12.8 and 13.9.

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