Battery Registration Too Much Info
#31
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Join Date: Apr 2017
Location: pa
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My Ride: 528i
Model Year: 2010 528i e60
Engine: N52k
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Run an experiment.
Trickle charge your battery so the battery is at a full charge.
Now the question is:
a) can the battery 'hold' a charge ? How long can it hold a charge? Is it discharging itself?
b) is there a parasitic drain in the vehicle discharging the battery prematurely?
c) is the diode in the alternator discharging the battery while the car is off?
Trickle charge your battery so the battery is at a full charge.
Now the question is:
a) can the battery 'hold' a charge ? How long can it hold a charge? Is it discharging itself?
b) is there a parasitic drain in the vehicle discharging the battery prematurely?
c) is the diode in the alternator discharging the battery while the car is off?
#32
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Run an experiment.
Trickle charge your battery so the battery is at a full charge.
Now the question is:
a) can the battery 'hold' a charge ? How long can it hold a charge? Is it discharging itself?
b) is there a parasitic drain in the vehicle discharging the battery prematurely?
c) is the diode in the alternator discharging the battery while the car is off?
Trickle charge your battery so the battery is at a full charge.
Now the question is:
a) can the battery 'hold' a charge ? How long can it hold a charge? Is it discharging itself?
b) is there a parasitic drain in the vehicle discharging the battery prematurely?
c) is the diode in the alternator discharging the battery while the car is off?
I have a battery charger that both charges and tests the battery as it charges. When I used it before, the battery charged fully. The pain about that is I am not in a house and so no where to plug in the charger.
I have to remove the battery from the car and lug it all the way to my place. Its just not urgent because I am driving my other car now.
#34
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#36
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#37
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Battery is on charge now. I drove the car for about thirty minutes today.
Last voltage reading was 11.94v this morning. Tonight its at 12.17v. We'll see what happens on the charger.
Last voltage reading was 11.94v this morning. Tonight its at 12.17v. We'll see what happens on the charger.
#38
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I'm now getting the frigging low discharge dang message again. Something tells me that the battery is not fully charging. I drove for the day and the notification went away.
I measured 11.94v at the battery terminal. I then started the car up and measured 14.1 volts. Looks like the alternator is putting out voltage but maybe is the incorrect current.
I registered my battery via Foxwell nt510 Elite and there was no place to select charging current. It just had same battery, different battery and switch battery type.
I measured 11.94v at the battery terminal. I then started the car up and measured 14.1 volts. Looks like the alternator is putting out voltage but maybe is the incorrect current.
I registered my battery via Foxwell nt510 Elite and there was no place to select charging current. It just had same battery, different battery and switch battery type.
Your conclusion that the alternator is putting out the correct voltage is wrong and one cannot change the current setting on it. The current into the battery is a function of the alternator output voltage and the battery internal resistance, i.e. state of charge - if the battery is fully charged, its internal resistance is high, thus more voltage is necessary to further charge it. At 11.94v at the battery terminals, the voltage from the alternator should be higher than the 14.1 you measured in order to charge the battery to a nominal 14.2 v. If fully charging the battery with a good charger restores the battery to full capacity, but later the battery is low again after some days in the car, then definitely I would check the alternator.
#39
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I guess you better tell Bentley that their e60 manual is wrong then...
Charging system quick-check
- Use a digital multimeter to measure voltage across the battery terminals with ignition OFF and then again with engine running. Battery voltage should be about 12.6 volts with key OFF and between 13.2 and 14.5 volts with engine running.
- Run engine at about 2000 rpm and switch ON electrical loads (fans, lights, rear window defroster, and wipers). With all accessories on, battery voltage should be above 12.6 volts.
- The regulated voltage (engine running, battery charged, accessories and light OFF) is usually between 13.2 and 14.5 depending on temperature and operating conditions. If the voltage is higher than 14.8, the voltage regulator is most likely faulty.
Charging system quick-check
- Use a digital multimeter to measure voltage across the battery terminals with ignition OFF and then again with engine running. Battery voltage should be about 12.6 volts with key OFF and between 13.2 and 14.5 volts with engine running.
- Run engine at about 2000 rpm and switch ON electrical loads (fans, lights, rear window defroster, and wipers). With all accessories on, battery voltage should be above 12.6 volts.
- The regulated voltage (engine running, battery charged, accessories and light OFF) is usually between 13.2 and 14.5 depending on temperature and operating conditions. If the voltage is higher than 14.8, the voltage regulator is most likely faulty.
#40
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I guess you better tell Bentley that their e60 manual is wrong then...
Charging system quick-check
- Use a digital multimeter to measure voltage across the battery terminals with ignition OFF and then again with engine running. Battery voltage should be about 12.6 volts with key OFF and between 13.2 and 14.5 volts with engine running.
- Run engine at about 2000 rpm and switch ON electrical loads (fans, lights, rear window defroster, and wipers). With all accessories on, battery voltage should be above 12.6 volts.
- The regulated voltage (engine running, battery charged, accessories and light OFF) is usually between 13.2 and 14.5 depending on temperature and operating conditions. If the voltage is higher than 14.8, the voltage regulator is most likely faulty.
Charging system quick-check
- Use a digital multimeter to measure voltage across the battery terminals with ignition OFF and then again with engine running. Battery voltage should be about 12.6 volts with key OFF and between 13.2 and 14.5 volts with engine running.
- Run engine at about 2000 rpm and switch ON electrical loads (fans, lights, rear window defroster, and wipers). With all accessories on, battery voltage should be above 12.6 volts.
- The regulated voltage (engine running, battery charged, accessories and light OFF) is usually between 13.2 and 14.5 depending on temperature and operating conditions. If the voltage is higher than 14.8, the voltage regulator is most likely faulty.
Perhaps all it is for your situation is a parasite current draw and not the battery or alternator. We'll see I guess.
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