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Battery Voltage

Old Sep 30, 2015 | 08:17 PM
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blackpepper's Avatar
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Default Battery Voltage

I noticed my battery voltage is around 12.4-12.6 even with all accys on or off,I think my alternator is going south cause shouldn't the charging voltage be somewhere 13-14 volts using my torque app to read voltage will put a multimeter on the battery tomorrow raining to hard outside right now also battery is about 7 months old.
 
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Old Sep 30, 2015 | 09:05 PM
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maxcichon's Avatar
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From: MOFN, AL, 70 miles from George
Default Re: Battery Voltage

Yeah-it should be 14.2+ VCD when charging and 12+ VDC with no load.

I would use a decent DVM to confirm. Not a Bluetooth (remote/secondhand info) read.
 
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Old Sep 30, 2015 | 09:08 PM
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From: Alma, MI
Default Re: Battery Voltage

Originally Posted by blackpepper
I noticed my battery voltage is around 12.4-12.6 even with all accys on or off,I think my alternator is going south cause shouldn't the charging voltage be somewhere 13-14 volts using my torque app to read voltage will put a multimeter on the battery tomorrow raining to hard outside right now also battery is about 7 months old.
Just read mine today with a real voltmeter right on the battery posts, 14.2V right after a start.
 
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Old Sep 30, 2015 | 10:15 PM
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Default Re: Battery Voltage

Yes I have a good fluke meter but raining outside I will confirm my voltage tomorrow and report back
 
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Old Sep 30, 2015 | 10:37 PM
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Default Re: Battery Voltage

Originally Posted by KDW4Him
Just read mine today with a real voltmeter right on the battery posts, 14.2V right after a start.
All flooded batteries start to gas at 80 percent recharge 2.36 VPC [ volts per cell ] 80 percent recharged 14.16 voltage. If a shorted cell that one cell voltage will be very high.
 
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Old Oct 1, 2015 | 10:44 AM
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Default Re: Battery Voltage

Update check the battery voltage across the post with my multimeter and everything was 14 3 14.5 volts all accessories on I return the battery to Walmart because it was still only a year old and under warranty they replaced it with no questions asked
 
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Old Oct 1, 2015 | 10:56 AM
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Default Re: Battery Voltage

Also the torque app read about 1.5 volts lower than the actual voltage across the post with a multimeter
 
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Old Oct 8, 2015 | 06:21 PM
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Default Re: Battery Voltage

Originally Posted by blackpepper
Also the torque app read about 1.5 volts lower than the actual voltage across the post with a multimeter
Do you know why that is?
 
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Old Oct 4, 2017 | 06:09 AM
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From: Australia
Default Re: Battery Voltage

I have seen 14+volts , but it usually says only 13.7 or 13.8. should i worry ? no
this reading is according to my USB ps, volt meter, cig lighter adaptor device thingy.

Aanywayys, motor spinsn starts real quick every time ,and the stereo dont dim the lights .

Also, i do leave my bluetooth OBD/ Dashcommand dongle plugged in , all the time.
i do have real good battery ( a Varta ,overspecd but smaller)

battery quality is very important with our cars. low volts = sparking relays and all kinds of crap.
. plus driving 50 kms per day ,all highway. That Helps :-)
 

Last edited by daveesrt6; Oct 4, 2017 at 06:17 AM.
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