15.1 volt is a little high, but some cars are running at that voltage. The battery will actually need a higher voltage to fully charge it, but this area is not normally used. So what
Customer ServiceThe DME adjusts the charging voltage per the age of the battery (old battery gets more voltage). When you install the new battery, make sure you code it in and the DME should
Customer Service15.1 volt is a little high, but some cars are running at that voltage. The battery will actually need a higher voltage to fully charge it, but this area is not normally used. So what voltage is the alternator designed to work at ? If not 15.1 volt, return as faulty. If it is 15.1 volt, get advise from the alternator supplier, as it is high. Brian
Customer ServiceThe battery voltage can vary between 14 V and 15.5 V. The optimum charging voltage is set by the power module as a function of the state of charge of the battery, the
Customer ServiceBefore sticking in the new battery, I cleaned and tightened all ground straps to block and battery. Stuck in the new battery and started the car. Car runs great. Checked the voltage and it read 15.0 volts at idle. Without a load on the battery such as lights or accessories it will run a little higher, I forgot this little fact. An exceptable
Customer ServiceMy battery I''ve noticed on dash has been up in the 15.1-15.4 range and I changed alternator and put in brand new battery. Is there something else that I can possibly check or is this normal voltage range for the model? Last I recap when I had it newer was always 14.7v. Any help will be appreciated
Customer ServiceThe rectifier produces a higher voltage than the car battery''s nominal voltage, typically between 13.5 and 15 volts. This higher voltage is necessary to properly charge the battery and maintain the electrical system''s voltage. Why Is My
Customer ServiceBattery voltage monitored in the DIC is usually 14-14.5 volts and only after extended highway driving does it decrease to less than 13 volts. With continuous driving, I can watch the charge cycle with the voltage rising and falling in a several minute long cycle.
Customer ServiceThe IBS will store information and send to the DME on startup that battery voltage is low and in an attempt to catch up, the DME will couple the low battery charge with a low acid temperature measurement to decide that it is safe to signal the voltage regulator to increase alternator current output in order to raise the system voltage over a normal level (usually in the
Customer ServiceIs 15 Volts too high of a voltage to run on automotive electrical systems? And if so, would filtering the current thru an old style voltage regulator work to lower it to an acceptable voltage ??? battery; voltage; Share. Improve this question. Follow edited Sep 9, 2019 at 16:09. David Diaz. asked Sep 9, 2019 at 13:44. David Diaz David Diaz. 31 4 4 bronze badges. 6. I
Customer ServiceIf it''s taken your battery up to 15 volts, and it''s a modern, regulated charger, it appears to me to be faulty. After 8 hours, no self-respecting modern charger should still be charging at 15 volts. If it''s old school, this is pretty normal, and it''s time to stop charging.
Customer ServiceThe smallest possible set value for the generator voltage is 12.2 volts, while the maximum charging voltage can be anywhere between 14.5 and 14.9 volts. However, when the
Customer ServiceThe smallest possible set value for the generator voltage is 12.2 volts, while the maximum charging voltage can be anywhere between 14.5 and 14.9 volts. However, when the
Customer ServiceI''ve tested across the battery both before a journey and after, and on both occasions it charging the battery at between 15 and 15.1 volts. I was under the impression that this was potentially overcharging the battery and that it should be less that 14.8 volts? I also used an ODB scanner and that was also showing the voltage in the same range.
Customer ServiceIf the alternator case to battery negative post and alternator b post to battery positive post all come back less than .2 volts though that would eliminate that possibility, right? I attached wiring diagram Im working with. Ive traced back to fuse 48 on alt2 image. That fuse has a voltage drop over 1 volt relative to battery post voltage. I
Customer ServiceInstalled a new bosch battery. The old one failed the other day, it sat at 9 volts, NO start... So I installed a brand new one. But now it''s running at 15.1 volts when the car runs. Is that ok, or is that too high? someone said I may need a new voltage regulator? If so - where can I buy it and where is it in the engine? Please and a
Customer ServiceThe smallest possible set value for the generator voltage is 12.2 volts, while the maximum charging voltage can be anywhere between 14.5 and 14.9 volts. However, when the battery is in a refresh phase, the voltage may occasionally reach up to 15.2 volts. These refresh phases are required when the battery charge status is 80% over
Customer ServiceInstalled a new bosch battery. The old one failed the other day, it sat at 9 volts, NO start... So I installed a brand new one. But now it''s running at 15.1 volts when the car runs.
Customer ServiceThe smallest possible set value for the generator voltage is 12.2 volts, while the maximum charging voltage can be anywhere between 14.5 and 14.9 volts. However, when the battery is in a refresh phase, the voltage may occasionally reach up to 15.2 volts .
Customer ServiceI let the truck run for about 30 minutes and the voltage did drop to ~14.5 volts for a minute and then went right back to 15.3 volts. This truck was manufactured in 8/2016 so the factory batteries were only 3 years and 3 months old.
Customer ServiceA car battery reading 15 volts on the voltage meter can raise concerns, and it often points to underlying issues in the vehicle''s charging system. These issues can range from a minor overcharging problem, to serious multiple system failures. That said, here are the most common reason why your car battery may show 15 volts;
Customer ServiceThe smallest possible set value for the generator voltage is 12.2 volts, while the maximum charging voltage can be anywhere between 14.5 and 14.9 volts. However, when the
Customer ServiceThe battery voltage can vary between 14 V and 15.5 V. The optimum charging voltage is set by the power module as a function of the state of charge of the battery, the battery temperature and the lamp resistance. The maximum charging voltage is 16 V. Detection of state of charge of battery
Customer ServiceThe DME adjusts the charging voltage per the age of the battery (old battery gets more voltage). When you install the new battery, make sure you code it in and the DME should adjust the voltage for the new battery.
Customer ServiceIf it''s taken your battery up to 15 volts, and it''s a modern, regulated charger, it appears to me to be faulty. After 8 hours, no self-respecting modern charger should still be charging at 15 volts. If it''s old school, this is
Customer ServiceThe smallest possible set value for the generator voltage is 12.2 volts, while the maximum charging voltage can be anywhere between 14.5 and 14.9 volts. However, when the battery is in a refresh phase, the voltage may occasionally reach up to 15.2 volts.
Customer ServiceA car battery reading 15 volts on the voltage meter can raise concerns, and it often points to underlying issues in the vehicle''s charging system. These issues can range from a minor
Customer ServiceAutomotive voltage regulators always maintain output voltage at some value above the 13.2 - 13.4 volts required to run the car as well as maintain full charge. A fully charged battery, disconnected from anything for an hour will show 12.6 or 12.7 volts - each cell is 2.1 volts, so 6 X 2.1 = 12.6. A brand new off the shelf battery is NOT fully
Customer ServiceMy battery I''ve noticed on dash has been up in the 15.1-15.4 range and I changed alternator and put in brand new battery. Is there something else that I can possibly
Customer ServiceThe vehicle’s battery provides the essential power for its functionality and various features. The battery is responsible for not only starting the engine but also enabling functions such as window operation, door locking, and music playback. So, when something like a voltage reading of 15 volts pops up, it’s just natural to get worried.
I think that 15 volts is on the high side even if it is within specs. The smart regenerative charge system primary strategy is stored in the BCM . The BCM receives all of the important information relating to the battery condition from the battery monitoring sensor via the LIN .
A sustained voltage level of 15 volts or higher can potentially cause damage to a car battery over time. Continuous exposure to elevated voltage levels can shorten the overall lifespan of the battery, leading to the need for premature replacement. It can also cause irreversible damage to the battery cells and reduce its capacity to hold a charge.
Usually, a good battery has a voltage or power level of between 12.6 to 12.8 volts. When the voltage exceeds the range, it could be a sign of something wrong with the charging system or other electrical components in the vehicle.
If it is really 15 volts it could cause a problem with some batteries. Regular lead acid won't care much but the AGMs need lower voltage and can be damaged with high (> 14.8 ) voltage. I actually noticed mine above 15 the other day but it dropped down to 13 after a few minutes so I didn't pay much attention otherwise.
What is being displayed is not the actual battery voltage but the voltage of the entire electrical system at that particular point in time. Nominal and desired voltage of a 12v auto battery when not connected to vehicle is 13.6v.
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