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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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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37 views

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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26 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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52 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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1answer
49 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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1answer
43 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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1answer
329 views

Mercedes ML 430 will not start. No click, no electrical lights nothing.

After taking a nap in the parking lot at my job, the driver's seat (power seating) -- the passenger seat did work-- I had laid back could not be readjusted. After work I went home (3am closing shift). ...
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1answer
61 views

My Kia soul won't start when rainy or very cold

The dealer can't find anything wrong. Once I clutch start it I don't have the problem anymore. Until it is really rainy or cold a again. The Kia dealer can't find anything wrong. Do you think it ...
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89 views

Honda City 2009 : It would not start Start

My honda city 2009 AT would not start. The gauges would light up. The power windows,radio and AC worked. I was able to turn the key but when I try to start it, it will just give a sound like it is ...
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150 views

Jumping car battery

Donor cables hooked up correctly receiving car cables reversed. Didn't start, smoked. Mechanice shop portable jumper then used receiving car again had cables reversed. Again smoked, didn't start. ...
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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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Honda Civic 2012 the car wouldnot open with clicker or with master key

After coming from vacation (11 days) my Honda would not open with key had to call CAA they open the door and gave a boost I am driving but the alarm light does not flush what my next step should be ...
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63 views

battery tender keeps charging

Results for: so I have a motorcycle and use the Optimate1 battery tender. One day while using the tender I left and came back 6 hours later to find the Optimate still charging my battery. The battery ...
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Hyundai Accent Diesel 2002 alternator works on day but not when headlights are on

I have purchased Hyundai Accent diesel 2002 four cylinder from my savings .. its start every morning but not at night when the car's headlights are on. I couldn't start it after one or two attempt . ...
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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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0answers
21 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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29 views

Fan running the battery dead on a 96 Acura

Alright, my 1996 Acura 2.5TL is running the battery dead by running when not necessary. If it was continuously running after the engine shut off I would say stuck relay but it will both continue after ...
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62 views

Battery dead on 2012 Honda Civic

I have a 2012 Honda Civic. This morning the battery was dead. I had it jumped and it came on. I took it to AutoZone to have the battery checked; they couldn't check it because the machine said turn ...