An automotive battery is a type of rechargeable battery that supplies electric energy to an automobile. Usually this refers to an SLI battery (starting, lighting, ignition) to power the starter motor, the lights, and the ignition system of a vehicle’s engine.

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Car always takes several attempts to start, what's the problem?

Recently (since the beginning of the winter), my car has been taking several attempts to start every time I use it. Several factors about the car have changed, so it's hard for me to tell what's ...
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26 views

Maximum resting 12V car battery voltage

I've been trying to find the theoretical maximum resting car battery voltage so I can determine a good voltage threshold to trigger off in a car. The threshold voltage must be above the theoretical ...
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76 views

Intermittent starting trouble with new battery

I sometimes have problems starting my 2003 Ford Fiesta Diesel. When I turn the key it'll either start normally or just start to kick over then die. If I try again, the same thing happens. My battery ...
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30 views

Dead Battery any damage done

i have been away 6 months asked friend to turn car engine over once a week ,now he told me car battery died over Christmas, So what i want to know if there is any damage done to the electronic ...
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31 views

Issues ensuring battery stays charged

('06 Acura TL) Have jumped my car a number of times now. With each jump the car has been hooked up to the other car for about the same amount of time. It seems that there seems to be a direct ...
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27 views

Renault Modus wont start

The car is a Renault Modus 1.4 16v Dynamique 5dr 2005. The symptoms are: Car wouldn't start last week. The car cranks but does not start. Push started the car in 2nd, engine starts. Took The car ...
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97 Jeep Cherokee check gauges light came on and then my battery gauge dropped down to 9 didn't lose any power?

I'm so confused I had just left my house and got 3 blocks away and my check gauges light came on, then my battery gauge dropped down to 9v. My Jeep didn't lose power, and the radio, heat, lights and ...
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21 views

Ventilation of batteries

i have two 180 Varta Sealed FLA 12v batteries in my stable block which are charged by a 240kw solar panel on the roof to provide lighting to the stables. The batteries are in the feed room and we ...
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21 views

Diagnose and Handling of Frozen Batteries

So, it's been cold in the midwest. Actually it's really never been consistently this cold outside of Duluth and this means when jumping a dead car it's not a bad idea to consider if the battery is ...
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66 views

When Jumping a Battery Why Red FIrst

So, it's fairly popular consensus online that it's red clips to red posts, then black clips to frames, but why red first? One site mentions sparks, but you'll still get a spark when connecting black ...
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36 views

1998 BMW 318is excessive current draw - possible starter issue

My 1997 BMW 318is started making a whirring noise that varies with engine speed, and an electrical burning smell after driving, and the battery goes flat very quickly. I measured the current draw ...
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37 views

Why dual motor Tesla has more autonomy?

Maybe the question is more appropriate for Electronics Stack Exchange, I don't know. In the page http://www.teslamotors.com/models if we scroll down we see the several flavors Tesla sells its Model ...
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125 views

Would leaving a battery booster with only one terminal connected harm it or the battery?

I have a 2003 Mitsubishi Diamante, and I keep two battery boosters in the car "just in case". My son recently bought a car that had problems starting. He has used both my boosters on his car and ...
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28 views

my 02 Hyundai accent keeps blowing the ignition fusable link keeps blowing

My 02 Hyundai accent keeps blowing the ignition fusable link. What could cause this? We just recently replaced the alternator and battery and it was fine when I parked it, then for some reason the car ...
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3answers
48 views

car not starting after few km

In the morning my car starts in a single quick shot. After traveling for few KMs if I switch off car and try to start it, it does not come up. I can hear a small tick sound every time. Some times I ...
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47 views

Chevy Malibu 2009 won't start

I have a 2009 Malibu, yesterday I was heading back from school, then I started hearing a bizare sound like a whining sound, 2 minutes afterwards the engine stopped. When I got off to check under the ...
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Looking for battery for Honda Activa 2010 Model [closed]

I want 2 buy battery for honda activa 2010 model (it is acidic water not dry one) Which brand should I opt for exide, amaron or any other(amco etc)? Can I use dry one instead of acidic water.
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64 views

Alternator, Battery, or Fluke?

While we were out running errands yesterday, our car failed to start after a half hour stop at one of our destinations. The first attempt to start the car resulted in nothing but a rapid clicking ...
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Why has my battery gauge on my '94 Ford Thunderbird stopped working?

Today the battery gauge stopped working and the needle rests just before the 0. The car itself cranks, starts, and sounds like it always has. However, there used to be this intermittent buzzing noise ...
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31 views

2000 Jeep Cherokee 2WD battery light comes on

Hello I recently purchased a 2000 jeep cherokee, and I live in syracuse NY so the winters are pretty cold, so when I start it in the morning when its cold out, the serpentine belt and tensioner need ...
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127 views

Lots of sparks and heat when jump starting a car

I just tried to jump start a friend's car. When I connected the jumper cables, there were a lot of sparks. They were connected for nearly 30 seconds and I noticed a lot of heat and smoke coming from ...
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82 views

What causes battery terminal corrosion?

I put a new battery in my car about 8 months ago. After a problem starting a couple days ago, I found that there was massive corrosion under the battery terminals, so I cleaned them out and ...
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92 views

Does a jump starter with lower amperage than your car battery work?

I have a 3.0 litre V6 Diesel Jaguar XJ which has a 850amp battery. A fair number of people on this 400amp Amazon jump starter say it started their 3.0 litre cars fine. ...
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wont start only rapid clicking 2004 chrysler concorde lxi 3.5L

I have a 2004 Chrysler Concorde LXi 3.5. Couple months ago I was driving pulled over shut car off and went into store..when I can out and tried to start it it just rapid clicks . I let it sit for 20 ...
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35 views

hooking up a battery tender to your car for the winter

Do I need to disconnect my battery to use a battery tender for the winter? Is there the possibility of damaging the charging system if I leave the cables connected? Thanks
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135 views

2007 honda cr-v dead battery, electrical fuses blown

Honda CR-V 2007 I parked this car on Friday. It would not start on Sunday and the cd changer changed a bunch every time I tried and a few other dash lights came on. It was cold during the 2 days ...
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Can I safely upgrade to an AGM battery?

AGM batteries are capable of being charged at a faster rate, and may draw additional amperage from the alternator if it is not regulated. Many cars that come with AGM batteries have special charge ...
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121 views

Can a bad battery damage voltage regulator?

I have a '91 Ford Sierra Saphire 2.0 OHC (pinto). Have been struggling with having no charge for weeks now. I've tried two different alternators, had one of them completely rebuilt by a professional, ...
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40 views

is my car battery bad?

At 6am this morning the car battery was dead. (It snowed all night and temperature was 3 degrees this morning.) 3 hours later I went to check it out and it started right up so I let it run for 20 ...
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34 views

2008 Dodge Avenger with new battery

I put in a new battery and two weeks later the car wouldn't start ...yet with a jump start it turns on. Why on cold nights the next morning the car needs a jump?
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29 views

How long after changing a battery will it take for the Engine Check light to come on if there are other issues

My check engine light was on. After my car set over the weekend it wouldn't start. I took the battery down to a shop to be checked and charged. When I picked it up they said I needed to replace it. ...
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72 views

Batery is above 12 volts but car ignition fades

I've got this car that does not start and seems like a battery problem at first, when you turn the key it doesn't turn on and it sounds like the battery is fading, but when i chek the voltage it show ...
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155 views

Nissan Altima Alternator/Battery Problems

I own a 2005 Nissan Altima which has been having alternator/battery problems for past 1 year. My car has 112,000 miles on it. My car battery was past warranty so I had the battery replaced about a ...
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45 views

Lexus IS200 malfunctions after wrong polarity battery installed

Yesterday I was sold a wrong battery for my Lexus IS200 (switched polarity) and I inadvertently connected it to the car. When I hooked up the wrong battery I noticed immediately that something was ...
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Is it always the side battery cells that need topup?

Adding distilled water to my car battery, I've noticed only the side cells very short of reaching the meniscus. The most positive cell, facing the front of my '08 Jetta 2.5L (which has empty space, ...
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543 views

how fast does the alternator charge the battery?

It would appear that the common word of wisdom is that car alternators provide 50A of output. I actually looked at the supposed specs for my 2008 Jetta 2.5L on the internet -- a compact car -- and it ...
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how do i know if my lead-acid battery has been resurrected?

The OEM battery in my 2008 Jetta SE 2.5L has been nearly fully discharged one month back (had insufficient surface charge after a prolonged use without the engine running, but leaving it idle for 20 ...
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negative surface charge?

At about 20°C, there has been a situation that the OEM battery in my '08 Jetta was not capable of starting the car at all (virtually no movement of the starter at all), after being used for at ...
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38 views

Car with floor-integrated battery pack

IS there any electric car with a floor-integrated battery pack other than the Tesla cars?
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46 views

Nuts for 2008 VW Jetta SE 2.5L battery terminal bolts: 1/4" or M6?

I want to use an external charger to charge the battery in my US-market 2008 Jetta 2.5L SE with an OEM battery. I need to figure out which nuts to get to fit the existing battery terminal bolt, in ...
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Alternator/Battery power question

Good Afternoon, I have a 2014 Ford Focus SE that i use as my Work Vehicle. I work in Emergency Roadside Assistance. I have to run a laptop In the car in order to direct calls to other employees and ...
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295 views

would a sulfated discharged 12V battery charge at 12.5V?

I got a Stanley FATMAX RE-CHAGEiT 8AMP Automatic Battery Charger & Maintainer from Walmart for 29,97 USD, which appears to have three states of charging the battery -- detecting the voltage, rapid ...
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112 views

Alternator draining battery

My alternator has been draining my battery in my Datsun 240z since I swapped the engine (VQ35). It takes around 4 days to drain the battery to the point I can't start it. It charges it fine when the ...
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129 views

Mk5 Golf TDI with battery drain and brake lights coming on on their own

I have a 05 Mk5 Golf TDI. I have to jump it in the mornings as its battery is dead, but it will last all day if I'm driving it. It will start straight up if I stop for a hour or more, but if left over ...
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56 views

How do I check that my battery receives enough power from generator?

I suspect that my battery does not receive enough power from the generator. How do I verify that? I know that involves a voltmeter, but what are the exact things I'm measuring and how? I have a Skoda ...
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427 views

Is 10 minutes a long enough ride time to recharge a new car battery?

Would occasional 10 minute trips be long enough to charge a completely new Honda 2013 Civic's car battery, without it slowly dying over the long term? It's getting colder now and I don't drive ...
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3answers
245 views

how much water can be safely added to a battery?

My 2008 Jetta SE 2.5L has the battery as follows: ENERTEC EMC // 1J0 915 105 AD // 12V 61 Ah 330A DIN // 540A EN/SAE. It would appear that the battery can no longer hold the starting charge after an ...
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Use ozonated distilled water for maintenance-free batteries?

It's written everywhere that you should use Distilled water for topping up the electrolyte levels in the batteries; however, it would appear that Walmart's Distilled water also goes through Ozonation, ...
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439 views

Charging batteries thru cigarette lighter

The answer to this may be so obvious that I'm almost too embarrassed to ask; however, here goes: I have a high-end battery charger for my car which charges through the cigarette lighter receptacle. I ...
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Do jump starts with a place for full-size car battery exist?

I have an old battery left from the old car and I need a jump starter kit. It seems all jump starters have integrated motorcycle battery inside. I curious whether jump starters with a place for a car ...