A rechargeable device most often made of lead plates covered in an electrolyte and protected by a plastic shell which supplies consistent electrical energy to a motor vehicle. Often referred to as an SLI battery (starting, lighting, ignition). Powers starter motor, lights, and ignition systems of a ...

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3
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3answers
5k views

diagnose faulty voltage regulator causing battery overcharging?

I've been having an issue with an '03 Toyota Echo. The alternator died (at least that is what I thought) as the battery kept going flat. I found an alternator at a wrecker and fitted it, and I ...
20
votes
2answers
6k views

Jump starting a dead battery: Connect black wire to negative pole of battery or grounded metal?

Most of the advice I've seen for jump starting cars instructs to connect the black wire to a bare piece of metal on the car with the dead battery. However, I've always just hooked up both poles to the ...
0
votes
3answers
43 views

Which car parts require more energy than the starter?

Today, my car didn't start. I think that the crank was turning over because I could hear the loud sound a car makes just before starting up but the car was not starting. Anyways, I called a mechanic. ...
1
vote
1answer
868 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). ...
1
vote
1answer
1k views

Riding mower won't start with new battery

I bought an old riding lawn mower (B&S 12HP). To start it, I had to jump it from a car. The battery also looked old, so I replaced it with a new one. When I tried to start it with the new ...
2
votes
1answer
16 views

How to find and access the actual terminals of car battery

2013 Honda Civic here. I need to disconnect my car battery so that I can clean off some corrosion. Here are the pics: And: Obviously the positive terminal is under the big red cap with the plus ...
1
vote
1answer
68 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 ...
1
vote
2answers
47 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 ...
0
votes
0answers
38 views

Charging system trouble symbol in Honda FIT 2011

In my Honda Fit hybrid 2011, I got a few warning symbols showing up, which I'm confused about, charging system trouble symbol, check engine light symbol and drivetrain or powertrain.. Can anybody tell ...
0
votes
1answer
42 views

car won't start

Hi I have a 1992 Honda civic, when I turn the key nothing happens, lights do not turn on nothing, I replaced the alternator, I checked the battery with the little box, it says it was good I also ...
2
votes
1answer
14 views

1998 Jeep Grand Cherokee battery issues

Nearing 200,000 miles on this car, so it's beginning to have issues here and there. The most recent being that it dies when not being driven. This car was driven on a daily basis until I went to ...
4
votes
2answers
30 views

2008 Prius Dead Battery

My Prius' battery is dead. It is in a narrow garage. 1) Can I shift it into neutral and push it out of the garage? 2) Can I open the rear hatch to jump the auxiliary battery in the trunk? 3) Is ...
1
vote
1answer
1k 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 ...
4
votes
2answers
36 views

What's an acceptable battery power drop on light load?

After an overnight rest in the warm weather (above 16 degC), unlocking my 2008 Jetta 2.5L SE, my OEM battery with the minimal "welcome" electronics -- remote open of the driver door a few seconds ...
-1
votes
1answer
42 views

Charging an SLA battery for storage in an automobile

Whats the best way to maintain a 12v SLA battery in an automobile? Would a direct 12v connection to the vehicles battery system be sufficient, or is there a circuit that should be placed in between ...
2
votes
0answers
27 views

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 ...
6
votes
3answers
112 views

AC blower won't turn on after replacing battery

I have a U.S. 2011 Volkswagen GTI. After the car wouldn't start (starter would crank but engine would not turn on) I decided it's probably time to replace the battery, and did. Car starts fine, but ...
1
vote
2answers
22 views

Battery/alternator on 99 Chevy Prizm?

My car was running fine (no lights/warnings). The next day I tried to start it and it was completely dead not even a click sound like normal battery is going bad kind of thing. After I got it jumped ...
0
votes
1answer
239 views

Can the Chinese EV BYD E6 charge at Tesla charging station?

I am just wondering, are there any customers of this exotic brand, especially in the US? And btw can any other EV (e.g. Nissan Leaf, Toyota RAV4 EV) charge at Tesla's fast charging stations?
1
vote
2answers
5k views

Mustang charging system warning light on, but battery and alternator both passed testing?

I have a Mustang that the battery light stays on. I changed the battery and the alternator was checked by Autozone, they said it was good. I need help
3
votes
2answers
11k views

How do I know when a car battery was produced?

I have a hard time finding when my car battery was produced - can't find any defintive information. The battery is Bosch Silver with the following data printed: 5EN in huge letters and two rows of ...
2
votes
1answer
14 views

Astra G 2.2 - Electrical Issue

I have an Astra G 2.2. It was working just fine, no issues. Recently passed MOT with no advisories or issues. Today I topped up the oil and replaced the overhead interior bulbs with LEDs. They ...
2
votes
1answer
301 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 ...
1
vote
0answers
34 views

1987 GMC pickup - will not crank

I have a 87 GMC pickup. It was running fine yesterday. Went to get in it this morning and nothing. The cab light came on at first, but now nothing. When I hook jumper cables to it I get a spark from ...
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votes
1answer
22 views

what could be draining my battery on my Chevrolet Silverado [closed]

I need to know what could be draining my battery in my 1997 Chevrolet Silverado
3
votes
1answer
163 views

Charging battery after a jump start

A friend accidentally let the battery in his car run out by leaving the car lights on. He managed to get it going again with a jump start, but he wasn't sure how long he'd have to drive to ensure that ...
2
votes
3answers
82 views

Do all 12V batteries produce the same amount of current?

I have a car battery which is roughly 12 V. Sometimes, I will not use the car for a week (I bike instead), and the battery voltage drops to 9.5 V ~ 10 V. This low voltage makes it hard to start the ...
2
votes
2answers
55 views

Boot Liner Mat not drying after battery leak

I kept my old replaced battery in my boot to carry it to recycle store. The battery water/fluid leaked all over the boot liner mat. There is no damage to the mat whatsoever but it is not drying. It's ...
1
vote
1answer
26 views

Is this plan to use old 12V battery until it fails a good one?

I have a battery in a vehicle that is running low. It has not failed, but I measured the voltage, and so I know it's running low (11.6V). From what I've read, a 12V battery should really be well ...
6
votes
1answer
87 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 ...
1
vote
1answer
20 views

Will not start after new battery was placed

My car (1994 Honda accord) is not starting even after I put in a new battery. When I wiggle the Battery a little, I find that the car will turn half way, with the lights showing the battery and oil, ...
0
votes
2answers
48 views

Car with floor-integrated battery pack

Are there any other electric cars with a floor-integrated battery pack other than the Tesla?
1
vote
1answer
60 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 ...
0
votes
1answer
11 views

checking specific gravity of battery fluid reads 1/2good. Should I charge or replace? [duplicate]

battery test says 1/2 good. Should battery be replaced or recharged. Battery is likely 8-10 years old.
11
votes
6answers
26k views

Battery drains by itself when vehicle is parked (parasitic draw)

A 1998 Jeep Grand Cherokee has gone through 3 batteries in the last 3 months. While they have all been replaced by warranties, it'd be nice to get the problem solved permanently. I've tested the ...
2
votes
1answer
17 views

2003 Ford Escape battery and alternators problems

I have a 2003 Ford escape and it kept shutting off when I would leave it running with the Ac for a while. Later on the time my battery light turned on so I figured I needed to charge my battery so I ...
2
votes
1answer
112 views

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 ...
3
votes
2answers
155 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 ...
4
votes
2answers
89 views

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 ...
1
vote
3answers
155 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 ...
7
votes
1answer
105 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 ...
3
votes
1answer
33 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 ...
2
votes
1answer
109 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 ...
1
vote
2answers
58 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, ...
2
votes
0answers
63 views

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 ...
5
votes
1answer
197 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, ...
4
votes
2answers
74 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 ...
2
votes
1answer
24 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 ...
3
votes
1answer
36 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 ...
8
votes
4answers
45k views

What could cause my Honda Civic to not start? And how can I address the issue?

I need help trouble shooting my honda civic. It will not start. I was driving it earlier today and I went to drive it again when it would not start. I'm glad I was at home when it decided to quit. ...