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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12
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5answers
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Is it possible to harm your car by giving someone a boost?

This post explains why it's a potential hazard to clip to the negative post on the dead battery when giving a boost. But I've also been told that I could damage the electronics in my own car if I give ...
2
votes
2answers
90 views

Does intermittent starting difficulty indicate alternator or starter?

Tl;dr: Car is having trouble starting, and I'm wondering how to determine if it's the alternator or the starter. I don't experience the longer turn over times of a typical starter malfunction, but I ...
4
votes
2answers
1k views

When reconnecting a battery, why connect the positive first? [duplicate]

When reconnecting a battery, why is it recommended to connect the positive lead first, and the negative lead last? What difference does it make if they are connected in the opposite order?
2
votes
2answers
2k 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). ...
0
votes
1answer
57 views

Does a corroded starter drain battery?

I know a "bad" starter can drain battery, but am unsure what constitutes "bad enough" to allow a starter to drain the battery. Suppose a hypothetical coolant leak has corroded one's starter. Would ...
1
vote
3answers
6k views

Rover 25 - My battery light starts flickering on/off on the dashboard

My girlfriend noticed this yesterday and thought it was odd, it stopped but started happening again this morning on my way to work, I think its a V plate.... "as I’m driving along my battery light ...
-3
votes
1answer
232 views

Jumping car battery [closed]

Donor cables hooked up correctly, while the receiving car cables were reversed. It didn't start, but smoked instead. Mechanic shop used a portable jumper, then used receiving car again and had cables ...
15
votes
8answers
42k 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 ...
1
vote
2answers
138 views

Impact of cigarette lighter ports on car battery

I have a cigarette lighter hole in my car that produces 12V. I bought a cigarette lighter extender that has 3 cigarette holes and each hole has 12V so that's 36V instead of 12V. Will that damage my ...
3
votes
1answer
89 views

White Powder Forming on Battery Hold Down Bracket

I replaced the battery on my 98 Mazda 626 GF 2L about a month ago. I haven't driven it for about two weeks, and noticed the voltage is down from about 12.57 to 12.02 so far. I just noticed that ...
6
votes
2answers
7k views

How do you remove or even get to the car battery on a 2012 Honda Odyssey?

Summary How do you get to the battery on a 2012 Honda Odyssey, given that it is blocked by some type of intake tube**? **Edit: this used to say exhaust but I changed it to intake tube, given ...
1
vote
3answers
999 views

BMW 330xi car keys dead

I have 2006 BMW 330xi whose car-keys (the automatic one) is dead. I think its batteries are dead. What are my options? I tried driving around to charge it but that didn't work.
3
votes
0answers
65 views

Problems with starting my Motorcycle [closed]

I have a Honda 2003 VTX 1300 S Retro that will not start without a jump. I just purchased a new battery on line (Chinese) for this type of bike charged it and still getting the same results as before. ...
0
votes
2answers
78 views

Car Battery problem: The car did not start

Yesterday, my car did not start and I had to ask the ADAC (automobile club in Germany) to come. The problem was in the battery. The ADAC guy connected my car's battery to another battery then the car ...
1
vote
2answers
1k views

2011 Dodge Grand Caravan Intermittent Start Failure

We bought our van last November from a dealer. Warranty is over :( Now we've got intermittent startup problems. The main noise is the sound when the engine is trying to turn over but immediately ...
4
votes
1answer
25 views

Weird charging issue

I have a 2005 Honda Odyssey that I changed the battery on about a month ago. I was a little paranoid that I might also have a charging problem so I've been keeping a little voltmeter plugged into the ...
4
votes
2answers
4k views

2005 Chevy Cobalt won't start, sounds like a machine gun

I haven't driven my car in about a week, and when I went to try and start it today, it would not start. It has enough battery to play the radio and whatnot, so I'm not sure if it's a battery related ...
3
votes
1answer
552 views

Car won't start - replaced alternator - didn't help

I have a 5-6 years old Mazda 6 2010, 2.5L engine. My car simply won't start. I had this issue yesterday, so I called roadside assistance and they were able to jump start my car. I drove straight to ...
11
votes
2answers
720 views

What can we reliably tell from an in-vehicle battery voltage display?

The Red Cross division I am with recently purchased a new ambulance. It comes with a touchscreen display in the cockpit where we can control lights, sirens, check the temperature in the back, control ...
4
votes
2answers
93 views

Car won't start with a perfect new battery

I have a Toyota Tacoma 2001 and my car won't start off the battery under the hood. The battery is brand new and has a full charge. It's been working perfectly for 3 months since I installed the new ...
5
votes
7answers
51k views

RPM and duration to recharge a battery?

My car had been sitting for a while without being driven. The battery now has a weak charge but it can get the engine started (barely). I would like to charge the battery by running the engine, but ...
6
votes
1answer
69 views

Starting using a deep-cycle battery

This weekend, during a camping trip, the starter battery on my 2001 VW Eurovan camper started to show signs of weakness - cranking was much slower than usual and took about 5 attempts to get the ...
3
votes
2answers
912 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 ...
3
votes
1answer
587 views

Is it recommended/necessary to wear rubber gloves while replacing a car battery?

I'm not too car-savvy but I want to start working on my car on my own. My first challenge has arisen: replace battery. Do I need to concern myself with being shocked while trying to change the ...
3
votes
2answers
525 views

Will an auxiliary battery hurt a vehicle's alternator?

I am going to be road tripping and living out of my SUV for a while. I need a way to power a tiny portable cooler/fridge 24/7 and would like to be able to power my cell phone, laptop, and maybe a few ...
5
votes
2answers
67 views

What to do when accidentally overfilled a car battery

My car, a 2003 Toyota Kijang (known as Toyota Revo in other markets) uses a non maintenance-free battery that has to be topped up every now and then with distilled water. Today, while filling it up, ...
3
votes
3answers
219 views

Is it safe to charge two batteries off of one alternator?

Right now I have a 3000 Watt invertor wired to a 100ah sealed deep cell battery that I trickle charge at night. My plan is to run #6 wire from the battery in the engine to the spare battery so the ...
5
votes
2answers
158 views

Portable jumpstart kits: why aren't regular car batteries this small?

I was looking at the details of this jumpstart product: It claims to be 2 lbs and 14.2 x 12 x 3.5 inches, which I think is for the outer black canvas case, so I would guess the actual device is ...
3
votes
3answers
10k views

Battery light comes on after starting the car. How big of a problem is this?

On my way to work this morning, the battery light came on. I would say it was about 2-3 minutes after I started the car. My drive to work is only a 10 minutes drive, and the light was on the whole ...
26
votes
3answers
9k 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
70 views

Do I have battery or engine problems?

Yesterday, I used my car to drive literally 2mins. Away from my dorm building to get to my class building and back because of bad weather. 30+mins. Later I come back outside and use my remote to ...
3
votes
1answer
52 views

How to dispose of battery terminal clean up leftovers?

Today I cleaned up the corrosion on the terminals of my car battery. I have a 2010 VW Jetta. I used a toothbrush and baking soda mixed with water to clean the battery terminals. Now the terminals ...
1
vote
1answer
78 views

Disconnecting negative battery terminal

Why do almost every automotive procedure instructions start by saying: Disconnect the cable from the battery negative terminal. ?
3
votes
3answers
81 views

Does draining a battery typically leave it in a state that it won't take a charge?

My son borrowed a car and the battery seemed fine, car started fine every time. However it died after my son left some overhead lights on in the car overnight. We jumped it, and he drove about 20 ...
2
votes
1answer
64 views

Battery terminal connection issue

I have a dodge caravan 2012 and I recently got an electronic anti-rust device installed. 3 weeks after, I experienced a first problem. I started the engine then it stopped after 2 seconds. I ...
1
vote
0answers
100 views

How long will a 12V vehicle battery last if vehicle not used? [closed]

Without using a battery charger, about how long will a 12V vehicle battery last while sitting connected in an unused vehicle? In other words, how often do you need to drive a vehicle in order to keep ...
3
votes
4answers
13k views

Should I use coca cola or baking soda + water to clean my battery clamps?

The clamps that are attached to the car battery are corroded, I was told either of these liquids will work. Which one is better? Is there a how to guide on the exact steps I need to take? With my ...
1
vote
2answers
384 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?
3
votes
3answers
17k 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 ...
3
votes
1answer
147 views

Are there any modern diesel engines the require electricity to continue running?

I was reading this question about an owner checking the alternator by disconnecting the battery, which is an easy way to validate on a gasoline engine. The single answer assumes that the OP is ...
2
votes
1answer
64 views

How much amperage is an average car battery?

So, this is in general terms... But say you have a flat battery and you wanted to start a car without another card battery? Car batteries are 12V but I'm not sure how much current they are. Do they ...
1
vote
2answers
161 views

Car won't start, dies after jump

I have a 2007 Ford Mustang, 6 cylinder. A few hours after I drove it, the battery was completely dead. It can start with a jump, but if left to idle the engine stops soon after the cables are removed. ...
2
votes
3answers
4k views

Interpreting AC Delco's manufacturing date for car batteries

I understand that AC Delco encodes the month of manufacturing a car battery using two digits and encodes the year by one digit. The battery I just purchased, for example, is labeled P124R, which, ...
4
votes
1answer
80 views

Second battery for Android Stereo

I have an android head unit that suffers (like most stereos) a power drop/fail on starting the car. While the unit is engineered to retain OS power for a few seconds, the dvd player has to restart, ...
1
vote
1answer
18 views

battery is not working

I have a Honda civic 2006 automatic. Whenever I come after driving and park the car, the battery will automatically be empty in some time. I can not start the car until I get the battery charged from ...
3
votes
0answers
68 views

Honda civic 2003 dead battery from cold

My Honda Civic died after the temperature dropped lower than -30°C, and will only start now when I boost it. The previous owner told me about this, and he said he replaced the battery. But now, it's ...
2
votes
2answers
87 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
1answer
1k views

Sudden battery drain in brand new Accord

The other day we stopped for lunch for about an hour on a long trip in a 2012 Honda Accord EX-L 4 cylinder. When we came back the battery had drained so much the car had to be jump started. The ...
3
votes
2answers
13k views

My car won't start. Is it that I ran it without coolant or is it my battery?

Sunday I didn't use my car. At 9pm I moved it across the street because the street sweeper was passing on Monday. Monday morning at 8:30am my car doesn't start. I remembered that I haven't checked ...
7
votes
5answers
25k views

How do I know if my car battery is dead?

By mistake, I left the headlights on overnight for my Honda Civic 2008. 24 hours later when I tried to start it, the car would not start and nothing would come on including the internal lights and the ...