Questions tagged [battery]

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 motor vehicle.

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438 views

JB Weld & Acid Battery Repair

Trying to repair a crack on plastic casing on a everstart 12 volt battery after trying to connect something to the right terminal that didn't fit properly. Did some research ans decided to give JB ...
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Sudden battery voltage drop when ignition is on

I'm currently trying to figure out what is wrong with the car, but I'm not sure if a rogue drain somewhere is able to give such symptoms or did the battery just die. The voltage of battery stays at ...
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2002 PT Cruiser is running hot

P0601 and P1684 are showing up and my car will start running hot maybe 5 mintues after I start going down the road. Help please!
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Can I charge a 12V 71Ah Car Battery with a 12V 12Ah - 48Ah Charger?

Can I charge a 12V 71Ah Car Battery with a 12V 12Ah - 48Ah Charger? When I try the charger says the battery is full, but the charge indicator on the battery says empty.
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495 views

Pontiac Grand Prix won't start, horn would honk, electrical system goes crazy

Some facts: My dad has an aftermarket Remote Keyless Entry Not aware of any aftermarket theft system, does not use keyless start He's used 410 watt power inverters through the cigarette lighter but ...
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2003 honda accord battery light

Battery light keeps coming on and off and power steering feels like it is going out. New battery a year ago, new alternator a year ago. Replaced the accessory belt a week ago as well as the accessory ...
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63 views

Bad battery, or something more?

I have a 2005 Ford Freestyle, I’ve been doing a lot of front end work on it and had the radio on In it one day for a substantial amount of time, maybe 6 hours. Needless to say it died and later that ...
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My 2010 Hyundai Elantra won't start without a jump

My car won't start without a jump. I’d jump it with cables, it will start with no problem, but as soon as I turn it off, I won't turn over.
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New battery dead after 48 hours

My 3 yr old battery went dead and would not jump off. Replaced it. After 48 hours it was dead. Jumped it off. Held charge another 10 hrs. Dead again. Took to a shop. They replaced the negative cable ...
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Battery drain and possible brake fluid leak

This Sunday night I left my interior light on and this morning the car didn't even open with the remote key. My friends and I tried to start it by pushing it (I have done this before a few times and ...
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Technique to test an alternator - fact or fiction?

A friend explained that the following is a simple way to test an alternator to see if it is working: Turn on the vehicle. While it is running, carefully remove one of the 12V battery leads. See if ...
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2016 Chevy Malibu start up problems

I have a 2016 chevy Malibu with about 84,000 miles. I just bought this car from the dealership barely 2 months ago. My first issue started one morning I went out to start it and all the lights and ...
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529 views

Car audio settings battery backup

I want to solve a very annoying problem I've had with the last two Sony car audio receivers I've owned. The problem being that days are spent getting all the sound setting perfect to my liking, which ...
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Depleted Honda Fit battery — how long to recharge, how to re-enable radio?

I left the interior map lights (driver & passenger side lights) on for about 30 hours, depleting the batter in my Honda Fit. I could barely see the lights on. Fortunately, at least one towing ...
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1answer
588 views

Hyundai Accent mysteriously stopped starting

Just bought an 08 accent with 132 kkm a few weeks ago. Ran great until I drove it home one night and the next morning it wouldn't start. The starter spun but didn't engage flywheel so naturally I ...
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917 views

Safe voltages for jump starting

For various reasons, I keep several very large four cell lithium-polymer batteries in my vehicle. Each of these batteries is rated for over 100 amps of constant current, with 10 second burst ratings ...
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1answer
1k views

Ford Fusion 09 starts sometimes and sometimes it won't start

Recently my car has had trouble starting, well sometimes it turns on and sometimes it doesn't and i have to either wait a few minutes or sometimes it won't even turn on anymore. I changed the starter ...
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How to troubleshoot Intermittent Battery Light Issue in 2003 Honda Civic?

My 2003 Honda Civic EX is experiencing an issue which causes the battery (alternator/charging system) light to occasionally come on for less than a second. The car starts, runs, and drives fine ...
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136 views

Acceptable battery voltage drop overnight

This is a follow up to this question that I asked previously. Since asking that question, I have kept my same commute, but have been driving consistently 30+ miles on the weekend. In addition, I have ...
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Led strip flickering?

Connected a pair of led strips 12 v from car 12 v battery. It starts flickering when engine running, and gradually goes to constant brightness as rpm goes high. However, the light stays constant or ...
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Car is dead, but battery is (apparently) fully charged?

My car seems to be completely dead (no dash/radio/lights/ignition/key remote lock) but after testing with a battery charged apparently the battery is completely full. I've tested while connecting to ...
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2answers
34 views

Hybrid battery not charging fully

I have Toyota Estima 2.4 petrol/electric hybrid 2010 (UK 60 reg) that I bought about 4 months ago. So far I had no problems with anything until a couple of days ago the HV battery stopped charging ...
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1answer
398 views

Voltage measurements with the alternator running fluctuate

I own a 1994 Mazda Protege. On Sundays, I measure the voltage at the battery terminals, and register it. First with the car turned off, and then with the car idling. The voltage with the car turned ...
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1answer
85 views

Safe rounding of CCA during battery load testing

How do you determine the safe amp load of a battery tester? I am looking at testing a battery on a 2012 Mazda 3 sport which has a Mazda factory battery 75D23L (52). The service manual states in the ...
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998 views

Any means to add more batteries to an electric car?

A lot of the electric cars available today (except Teslas) have too small ranges. Inspecting them I see a lot of trunk that I might want to relinquish in exchange for extra range. However I don't see ...
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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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265 views

Does the Battery light mean Low Oil?

My battery light came on, my car seemed to lose power and cut off. Today I was told it was because the oil was low in the car so the computer was shutting down the engine to keep it from causing more ...
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1answer
2k views

Delco battery code

I have two new Delco batteries and the code reading methods I have seen don't seem to work. there is an etched number in the top 7MKD27, then there is a sticker P0585 with group number on the ...
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What causes batteries to explode [duplicate]

I have a 2014 Hyundai Elantra, that i have owned for a little over a year now. It has been very well maintained in the time that i have had it. The other day after i finished pumping my gas, i got ...
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2answers
13k views

Battery Explosion - What are the reasons a battery would explode?

A long time ago, in a galaxy far, far away, I saw a battery explode. I was about 100 feet away and two mechanics were jump starting a Harley Davidson from a truck. The operator of the truck was ...
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53 views

Why does my car shut off when put in reverse

I have a 2014 Hyundai Elantra, that i have owned for a little over a year now. It has been very well maintained in the time that i have had it. The other day after i finished pumping my gas, i got ...
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2answers
901 views

Can I use tap or A/C water in my battery?

I am a little confused on this, I have been using tap water which seems to work(I don't know if there are some long time after effects). But someone recommended to use the water coming out from my A/C ...
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4answers
2k views

Start Engine If Battery Drops Below “X” Volts

I use a lot of devices in my work vehicle that are typically running when the engine is off. I was doing some reading into ways to maintain battery voltage and I read that there was a device that ...
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1answer
64 views

Mercedes is in park, key won’t turn, lights won’t turn on, horn won’t honk, radio won’t turn on

I left my Mercedes Benz in a parking lot this past weekend since I was going out of town. It was left in park, the radio was off, and the lights were off. When I got back, I put the key in and it ...
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1answer
28 views

2002 Mercury Mountaineer V8 4.6 2W Drive

While driving on freeway going 75 MPH using cruise control, my engine stops running. I still have lights and power but no power steering or power brakes because engine was off. I put it in neutral and ...
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1answer
143 views

Can an 18V-5W Solar Panel Provide an Equalizing Charge for a Battery?

I recently finished a project in which I installed an additional cigarette lighter port on my car that was always on (the existing one was only on when engine was running), and connected a small solar ...
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Why put copper in between battery contacts and clamps?

We have bought a used Toyota Yaris. Yesterday I allowed my kids to play in the car, and they discharged the battery... So I went to take it out to charge it up and I found pieces of a copper and ...
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66 views

Why starter needs two positive connections

So from schematics or youtube it is clear that car electric starter is connected to battery positive terminal with two connections: one is always connected to battery (B wire) and one going through ...
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3answers
333 views

What's the difference between 2 A and 10 A charging options?

My battery charger has a 2 A and 10 A option. What's the difference? If 10 A is more and faster, why not just put the 10 A option?
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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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47 views

Modifying air conditioner to run without key inserted? (fan only, not temperature regulation)

In our Volkswagen Touran, I have already modified the fuse box in a way that the auxiliary 12V power outlets always deliver power, without ignition enabled, by connecting two piggyback fuse holders ...
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Activa 4G Exide Maintenance Free Battery Issue

Battery is fully charged but not taking self start properly.. Service centre or Local battery seller suggested to replace with a new battery although horn and indication lights are working fine and ...
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1answer
15k 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 ...
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20 views

Alternator sudden voltage drop after engine running for 2 minutes

My battery lamp in the gauge cluster turns on after the car have been running for approx 2-3 minutes. I have measured the voltage and when I start the engine and when it's running for the first 2-3 ...
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How slow ( not zero) can a car engine run without hurting engine and saving on fuel

New cars have stop-start system (even though this has been available for a long time). My question is: why are car companies emphasizing shutting the engine down at a traffic light, rather than making ...
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3answers
56 views

Can I keep a second car starter battery around as a backup?

I replaced my <1 year old car battery with a new one during troubleshooting, but the actual problem I had was the alternator. So now I have 1 new car battery and 1 used but good battery (and I can’...
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2answers
116 views

2004 Volvo S60 starting issue

I am interested in buying a 2004 Volvo S60. The guy selling the car says: "It won't start. When you try to start it. its as if the battery was bad, but it's not" Does anyone know what that means? ...
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2003 Mazda Tribute lost power

I have a 2003 Mazda Tribute with the V6. The battery light will occasionally come on, sometimes it just flashes, other it stays on. I had the battery and alternator checked at two different auto parts ...
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Why drill a hole in the base of a 12V battery?

I attempted to do some regular battery maintenance on a recently acquired vehicle. The cells were all low on fluid so I added some distilled water to each cell. However, one of the cells was obviously ...