Help battery over charge

pokeyl · 12-24-2013, 05:34 PM

I have a 15 volt indication and a Battery lite as well as a e brake lite any ideas?

kenchan · 12-24-2013, 05:36 PM

do you mean 14.8-15v while the car is on? that's normal. give credit to your alternator.

pokeyl · 12-24-2013, 06:40 PM

Over 15.2 at ilde. both came on at the same time

SouthArk370Z · 12-24-2013, 06:50 PM

Check system voltage with a multimeter. The dash gauge may be out of calibration.

Edit: You can also check system voltage with an OBD scanner.

DEpointfive0 · 12-24-2013, 07:17 PM

Quote:

Originally Posted by kenchan

do you mean 14.8-15v while the car is on? that's normal. give credit to your alternator.

That's still high. I think 14.8 is the cap. Otherwise the alternator has issues

pokeyl · 12-24-2013, 07:29 PM

Quote:

Originally Posted by DEpointfive0

That's still high. I think 14.8 is the cap. Otherwise the alternator has issues

With a meter it is 15.0-15.1

As for the brake lite the fluid is not below the add line but not to the full line.

DEpointfive0 · 12-24-2013, 07:35 PM

Quote:

Originally Posted by pokeyl

With a meter it is 15.0-15.1

As for the brake lite the fluid is not below the add line but not to the full line.

Put it to the full line to make sure. That system is touchy.

And it seems like your alternator is on OD

SouthArk370Z · 12-24-2013, 07:53 PM

According to the FSM (page CHG-27 in the 2009 edition), 14.1-14.7V is normal. Sounds like your regulator needs to be adjusted. Check your battery - overcharging can cause the electrolyte level to drop - and add distilled water as needed.

luigi90210 · 12-24-2013, 08:22 PM

first thing, how old is your battery?

secondly, have you tried another battery to see if thats being overcharged?

kenchan · 12-24-2013, 08:25 PM

Quote:

Originally Posted by pokeyl

Over 15.2 at ilde. both came on at the same time

hummm... that is high.

pokeyl · 12-24-2013, 08:43 PM

Quote:

Originally Posted by DEpointfive0

Put it to the full line to make sure. That system is touchy.

And it seems like your alternator is on OD

no change with fluid added

pokeyl · 12-24-2013, 08:44 PM

Quote:

Originally Posted by SouthArk370Z

According to the FSM (page CHG-27 in the 2009 edition), 14.1-14.7V is normal. Sounds like your regulator needs to be adjusted. Check your battery - overcharging can cause the electrolyte level to drop - and add distilled water as needed.

can you ajust the regulator?

pokeyl · 12-24-2013, 08:46 PM

Quote:

Originally Posted by luigi90210

first thing, how old is your battery?

secondly, have you tried another battery to see if thats being overcharged?

Factory battery, 2010 ish

luigi90210 · 12-24-2013, 10:24 PM

Quote:

Originally Posted by pokeyl

Factory battery, 2010 ish

well first things first, measure the voltage while the car is running at the battery terminals, you might not be overcharging but the car can think you are if the voltage sensor is bad(i think thats what the gauge and ECU uses)

you should read exactly 14.7v if its a little higher or lower, dont worry about it(meaning dont worry about overcharging your battery take the car in to get the sensor replaced if under warranty), as long as its under 15v and above 13.6v, its fine

if you are seeing an overcharged battery, first off take it to the dealer if you have warranty still, either your voltage regulator or your alternator has gone bad and request for your battery to be tested as well, overcharging a battery can lead to bad news(explosions, dead batteries, ect.) later down the road depending on how bad the overcharge is

if dealer wont test the battery, take it somewhere else and have the battery tested, if it isnt passing take the car back to the dealer and demand for a new battery since it was being overcharged

pokeyl · 12-24-2013, 10:34 PM

Quote:

Originally Posted by luigi90210

well first things first, measure the voltage while the car is running at the battery terminals, you might not be overcharging but the car can think you are if the voltage sensor is bad(i think thats what the gauge and ECU uses)

you should read exactly 14.7v if its a little higher or lower, dont worry about it(meaning dont worry about overcharging your battery take the car in to get the sensor replaced if under warranty), as long as its under 15v and above 13.6v, its fine

if you are seeing an overcharged battery, first off take it to the dealer if you have warranty still, either your voltage regulator or your alternator has gone bad and request for your battery to be tested as well, overcharging a battery can lead to bad news(explosions, dead batteries, ect.) later down the road depending on how bad the overcharge is

if dealer wont test the battery, take it somewhere else and have the battery tested, if it isnt passing take the car back to the dealer and demand for a new battery since it was being overcharged

I have 15.0 to 15.2 at the battery running
Car is out of warranty 43K miles
I hope it corrects in the morning, but solid state

12-24-2013, 05:34 PM	#1 (permalink)
pokeyl Track Member Join Date: Nov 2010 Location: DFS Posts: 896 Drives: ??? Rep Power: 55	Help battery over charge I have a 15 volt indication and a Battery lite as well as a e brake lite any ideas? __________________ It's not my fault I'm old, I was born a very long time ago! Last edited by pokeyl; 12-24-2013 at 06:51 PM.

12-24-2013, 06:40 PM	#3 (permalink)
pokeyl Track Member Join Date: Nov 2010 Location: DFS Posts: 896 Drives: ??? Rep Power: 55	Over 15.2 at ilde. both came on at the same time __________________ It's not my fault I'm old, I was born a very long time ago! Last edited by pokeyl; 12-24-2013 at 06:51 PM.

12-24-2013, 06:50 PM	#4 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Check system voltage with a multimeter. The dash gauge may be out of calibration. Edit: You can also check system voltage with an OBD scanner. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma Last edited by SouthArk370Z; 12-24-2013 at 06:53 PM.

12-24-2013, 07:53 PM	#8 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	According to the FSM (page CHG-27 in the 2009 edition), 14.1-14.7V is normal. Sounds like your regulator needs to be adjusted. Check your battery - overcharging can cause the electrolyte level to drop - and add distilled water as needed. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

12-24-2013, 08:22 PM	#9 (permalink)
luigi90210 A True Z Fanatic Join Date: Apr 2012 Location: San Diego CA Posts: 1,103 Drives: Classified Rep Power: 15	first thing, how old is your battery? secondly, have you tried another battery to see if thats being overcharged? __________________ SOLD 370z New Car:classified DD:2011 Mini Cooper S stock

12-24-2013, 05:36 PM	#2 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	do you mean 14.8-15v while the car is on? that's normal. give credit to your alternator.

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