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.

learn more… | top users | synonyms

2
votes
1answer
4k 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
3answers
1k views

Why use a car battery charger?

What's the need for car battery chargers that I often see on display in auto parts shops? I mean a battery is sold charged (and if it discharges too much it just dies and can't be restored) and every ...
10
votes
4answers
14k views

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 ...
4
votes
4answers
11k views

How to diagnose a starter motor that does not work

My e46 M3 would not start when I got to the parking garage after work. When I first turned the key, I heard a sound like grinding gears, but I was so startled that I immediately stopped trying to ...
1
vote
2answers
441 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.
2
votes
3answers
622 views

What's happening when you give someone a boost?

While I've given and received boosts before I've always been following instructions by rote and never really understood what's happening. The procedure I've been told is: Attach red clamp to the ...
4
votes
1answer
1k views

What do battery numbers mean? E.g., 26R-5N

I went to Walmart and put my car's information (2000 Dodge Neon) into the electronic battery selector, and it told me to purchase a 26R-5N battery (which matches my current battery). However, what do ...
2
votes
2answers
2k views

How to access negative battery terminal in 04 Pontiac Montana

So my hand is all scuffed up from trying to get to the (-) terminal for jumper cables to jump my Ford Focus with the defective trunk latch which apparently has been draining my battery. The fuse box ...
5
votes
3answers
1k views

How should I prevent my battery going flat when I leave my car alone for a month?

I will be leaving my Focus alone for around a month in (scottish) winter weather. Ordinarily I would make sure to take the vehicle out at least once a week to prevent the battery going flat in the ...
5
votes
2answers
977 views

Can an engine stop from a bad battery?

The car is a 2005 Toyota Corolla CE. Its engine is the 1ZZ-FE, a 1.8L straight four that runs on gas, not diesel. The alternator is stock, and tests out just fine on the multimeter in both voltage ...
4
votes
1answer
191 views

What's the reason for a battery light coming on and becoming brighter as the engine revs higher?

The vehicle is a 1993 LandRover Discovery 3.5 V8. Today when I hopped in to drive home the battery light came on when I started up, and remained on. It gets brighter as the engine revs and just ...
1
vote
1answer
133 views

Sound made in Ford Focus when plugged in

I had a dead battery this morning and plugged in my '03 Focus for the first time to charge up enough to get the dang thing out of the garage. I was a little bit worried when I plugged it in because I ...
1
vote
1answer
363 views

2001 Sienna Won't Start, Dim Dashboard Lights

My mom's 2001 Sienna won't start. When I try to start the car, I get a very rapid clicking noise. The lights are very dim; in fact, the dashboard lights flicker constantly and are almost going out. ...
3
votes
2answers
415 views

Does length of jumper cable matter while jumpstarting a motorcycle from car battery as a booster?

I recently left my Harley Davidson 883 Superlow in ignition on for 8 hours, headlight drained all the battery. This was my first time jumpstart experiment. Had following few questions, happy to be ...
3
votes
1answer
495 views

Battery replacement on 2001 Chevy Venture

I have a 2001 Venture that needs a battery replacement. Will disconnecting the battery activate the Theftlock system in my stereo? My impression is that the VIN is stored in flash memory, so a ...
2
votes
1answer
213 views

Power Inverters as Emergency Generators?

After being hit by Hurricane Irene last week, I happened to loose power for literally one week so rather than rely completely on batteries and being a nomad, I used my Cobra 400 watt power inverter ...
8
votes
2answers
1k views

Why might I experience a power falloff after starting my car with the AC On?

I have a 2000 Chrysler Neon which generally runs well. I have noticed that if I start the vehicle, turn the AC on and reverse out of the driveway, the engine seems to struggle/sounds like it is going ...
2
votes
3answers
4k views

Can I charge a Car Battery with a Motorcycle charger?

Car battery to be charged is a DIN66 which I think is about 65ah. I have a Motorcycle charger which says it can be used on cars; it suits batteries from 4 ah to 40 ah. Does this mean that it can ...
3
votes
2answers
337 views

s60 won't start, no lights, nothing at all

I accidentally left my keys in ignition overnight - and now nothing. Have charged battery and tried spare key, but neither fixed the issue.
13
votes
2answers
3k 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 ...
1
vote
2answers
2k 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
2
votes
1answer
56 views

How will a hybrid electric vehicle electric drive perform in severe frost?

Every description of hybrid electric vehicles goes to lengths explaining how good it is that an electric motor can be used in cases where the internal combustion engine is not very efficient and thus ...
7
votes
4answers
2k views

How to assess battery charge level and alternator performance?

What diagnostics can be done to to assess battery charge level? I'm interested both in one-off tests like can be done in car service and also continuous monitoring during normal use. Car panels ...
0
votes
0answers
170 views

How do you locate a battery drain? [duplicate]

Possible Duplicate: Battery drains by itself when vehicle is parked (parasitic draw) Something is leaching current from my battery. Leaving it parked for a few days results in the battery ...
6
votes
3answers
4k views

How do I apply dielectric grease to my battery?

I recently had a new battery installed in my 2006 Subaru Forester. The shop did not use any dielectric grease, just connected the leads to the terminal and that's it. What is the preferred method of ...