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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9
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1answer
2k views

Disconnected wires near battery in BMW e46

I noticed a disconnected wire dangling next to the battery in the trunk of my 2005 BMW 330ci. It was actually a red and blue wire that veered off from the thick red one in the middle of the image. ...
4
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1answer
5k views

Battery light flashing after alternator install on 2004 Ford Escape

I just put new alternator on my 2004 Ford Escape, and now my battery light keeps flashing on and off, and it will sometimes stay on. The battery has been checked and is charging 100 % . The alternator ...
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2answers
1k views

Motorcycle won't turn over immediately after a pit stop

Motorcycle: 1980 Honda CB900 Custom. After refilling the battery with distilled water, getting it charged and letting the motorcycle sit for a few days... I then went for a ride yesterday. The ...
8
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2answers
17k views

Old starter clicked, wont turn over engine. New starter wont even click - no noise at all

My old starter would click, but not turn the engine over. I got a brand new starter and installed it. The only two wires connected to the starter are completely different and can only be fit in the ...
6
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1answer
139 views

2002 golf dead battery - Was able to jump - Bad alternator or Battery

I have a 2002 Golf. I put the car on the drive on Friday night and tried to use it on Wednesday and it was dead. No lights, no display nothing. I came home and jump started and it ran fine. No stalls ...
6
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1answer
484 views

Help with Strange Intermittent yet predictable parasitic battery drain?

I'm having an issue where while testing circuits for the offending drain, I will see NO drain for about 30 seconds and then a 6-9 amp drain for about 10; rinse and repeat. Anybody have an idea what ...
3
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3answers
2k views

How can you use the headlights to tell the quality of your battery?

I understand that all headlights do dim briefly when you turn the engine on and that this is normal. I also believe that the headlights will dim more if the car battery is in poor condition. I hope ...
7
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1answer
13k views

Starter solenoid clicking continuously

Any advice on this would be greatly appreciated. My car would not start yesterday. When the ignition was turned, all that could be heard was a continuous clicking which then slowed after a while, ...
9
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1answer
795 views

How can I dispose of the waste products I get from working on my car more effectively?

I have some real challenges disposing of various fluids and consumable objects from working on vehicles at home in my small workshop. Some of the more common things that I want to be able to dispose ...
4
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2answers
46k views

What is the difference between a normal battery and a maintenance free battery in a 2 wheeler segment

What is the difference between a normal battery and maintenance free battery. Is a maintenance free battery really free of maintenance or just it requires less no of charge cycles. I currently own a ...
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2answers
758 views

What battery should I buy for my vehicle?

My girlfriend has a Nissan Versa 2014 (although this question still applies for any other car), and I need to buy a battery for it. I went to both Walmart and Advance Auto parts and there are lots of ...
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2answers
942 views

Why does my car die completely (after a battery recharge)?

Recently, the keys in my car were left in the ignition in the 'on' position and my battery was drained. I posted a question about replacing v. recharging (24930). I removed the battery from the car ...
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8answers
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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 ...
7
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2answers
1k views

Car battery appears good but car won't start

My 2005 Nissan won't start today. Battery is relatively new(about one year old) and I can turn the lights on, front headlights, and it appears fine. However, when I tried to start the car by turning ...
6
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5answers
358 views

Charging circuit

I have a motorhome and tow my car behind. Since I have to leave the car in accessory mode so the steering wheel is unlocked, the battery doesn't last a long time. I want to run a DS line from the ...
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1answer
1k views

Do car batteries degrade when left charged, boxed and unconnected for long periods, e.g. in a shop?

I was discussing where to buy car batteries with a friend who is a professional driver and who has briefly worked as a mechanic. He suggested buying from one particular shop for several reasons, one ...
6
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1answer
847 views

Trouble starting car, cold weather. MB A140 W168

So, I have a Mercedes-Benz, A140 W168. I moved to Finland about 18ish months ago which is when we bought the car 2nd hand. Last winter temperatures only went down to around -15C (5F) degrees, and ...
8
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6answers
56k views

2004 Ford Escape battery light comes on intermittently - what likely cause(s) are there?

I have a 2004 Ford Escape Limited on which the battery light has been coming on randomly for varying amounts of time while the vehicle is in active operation. I have checked the battery cables and ...
5
votes
1answer
1k views

ECM Fuse Blown what to test next

Recently I was on the highway and suddenly my car broke down and it was cranking and all but not starting so I knew some fuse has blown. I removed the indicator fuse and used it for fuse which gave ...
11
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1answer
5k views

Does this crack in a battery terminal post indicate that the battery should be replaced?

Mechanics at the local garage have insisted it's "no problem yet", but people here in Sierra Leone have different standards to me when it comes to car safety... This is a pic of the positive terminal ...
3
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1answer
94 views

New Case - Watered the battery and got rust on one of the engine pipe

I bought new car and I added battery water to level. But some spilled on the engine and one of pipe got effected and it has rust on it. I went to mechanic, he told me to apply diesel on it. I did, ...
4
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1answer
241 views

Poor battery condition, replacement required! Or is it?

I drive a 2004 VW Passat B5. Recently, my insurance company came round to fit a black box to my car as part of the terms and conditions of my car insurance policy. Whilst they were doing this they had ...
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1answer
293 views

What's with my Toyota Tercel after I jump started another person's vehicle?

I jump started my daughter's vehicle which is a 6 cylinder with my Toyota 4 cylinder. Will that affect my Toyota car? I'm not sure if it was a existing problem and jump starting it made it worse. ...
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1answer
525 views

RPM problem Ford 2009 Crown Vic

I recently removed the car battery and plugged it again. I then noticed that when I turn the A/C on the RPM goes up and down 1000~500 rpm and sometimes when I shift the gear from N to D or R the car ...
8
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1answer
4k views

Battery light on after new alternator

Car: 2003 Honda Civic Si G1Wh dash cam, 400w amp, 4300k HIDs My alternator failed badly (stereo cutting off), no battery light. Replaced it with a reman Duralast, battery light is on. It shows 14.5v ...
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2answers
3k views

AirbBag and 4x4 light is on after changing BMW X3 battery. Why?

After I changed my BMW X3 2008 battery at home the 4x4 and AirBag light is on. Any ideas why? Some people claim that changing BMW x3 battery is not straight forward, however, they don't explicitly ...
2
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2answers
67 views

How to test charge-holding condition of car lead acid battery

One of our cars recently had problems starting on a ~70°F day, after having the headlights on for 10-15mins with the engine stopped, post a 20 mile drive. The decision was to replace the battery, ...
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1answer
48 views

charging battery bank with two vastly different batteries

I have a ctek D250S DC-DC charger in my vehicle charging a 12V 100Ah agm battery from solar and alternator with up to 20A. While travelling I need to charge a 12V 7.5Ah SLA battery. Conneting both in ...
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1answer
113 views

Power cuts out when I wiggle positive battery terminal [closed]

Power cuts out when I wiggle positive battery terminal right when I wiggle it left power comes back on megane 225 please help when I put foot on accelerator it feels like I'm being g pushed backwards ...
4
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1answer
746 views

Wiring Harness / Fuse Panel Repair

I have a 2006 Dodge Magnum and a friend of mine was changing the starter. Forgot to unhook the battery. And when the hot wire on starter grounded out it Melted the Negative battery cable until it ...
6
votes
2answers
618 views

Why do the batteries on some cars need to be hot-swapped?

By "hot-swap" I mean ensuring that the new battery is connected in parallel to the old battery while the old battery is removed and the new one is installed in its place. The idea is to ensure that ...
4
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4answers
302 views

What is the expected lifetime and failure mode of lead acid battery?

I have a four and half year old manual transmission car with start/stop technology. The car has required jump start once after I accidentally left the lights on overnight. I have recently noticed that ...
7
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2answers
6k views

Removing a car battery - order of wires explanation

Q1: When one removes a car battery, why does one start with the minus wire? Is it because if we remove the plus wire first it may touch the body of the car and close the circuit, causing a short-...
2
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3answers
15k views

Are inverters bad for your car?

I bought a Duralast 130W inverter and it says 260 peak watts and it plugs into the 12V cigarette lighter. I want to charge my HP laptop with it. Is it bad for the car?
26
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6answers
42k views

Is Start & Stop technology good or bad for my car? (Alfa MiTO)

I was recently in the lucky position to obtain an (almost brand new) Alfa Romeo MiTo, Progression. Like many new cars coming out these days, it has "Start & Stop" technology that turns the engine ...
7
votes
2answers
48k views

Is white powder on the battery terminals harmful?

I have a four and half year old car. I have recently noticed that there is white powder forming to the battery terminals. The car still has the original battery and probably should be replaced ...
2
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2answers
354 views

Viable replacements for lead-acid batteries?

Given the state of battery technology, is it viable for either motorcycles or cars to replace the original spec 12V lead-acid battery with a different type of battery? My question comes about as I ...
2
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1answer
71 views

2005 4 cyl Ford Escape

My daughter's 17 and pretty smart. Her Escape wouldn't turn over this morning, sounded like she just needed to jump it. She's never done it before, I'm at work, so I told her to get her friend and ...
2
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2answers
3k views

Jeep stalls a lot has trouble idling after battery pulled for a long time?

I've had this a problem a lot with this vehicle. I have a 99 Jeep Wrangler TJ. I believe the car's computer has a battery that is a dead (like a watch battery). For some reason when it stalls or when ...
3
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2answers
3k views

What happens if a dry charged battery is used without electrolyte?

I bought a battery today for my scooter. The mechanic fitted the battery into the scooter and it seems to be running fine. But when I noticed the battery's box later on, it said "Dry Charged" and on ...
2
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2answers
5k views

when trying to start my pajero it just clicks and wont fire up

pajero wouldnt start and just clicks had aa out and they said it was the alternator but tried car over weekend and it started first time. tried this morning and just click had to have a jump start to ...
2
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0answers
200 views

Fresh battery, no lights on 1979 Honda CB125 [closed]

I have a 1979 Honda CB125 that was running consistently about 2 years ago. It then sat for two years and the battery was corroded so I replaced it. I've made sure the battery is charged (I have a ...
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3answers
189 views

Battery dies frequently

I've had my 97 civic for a year now and the battery died about 3 months after I bought the car. Each time it died, I'd kick start it, drive for a few days, then it would die again. So I went to the ...
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1answer
3k views

Calculate car battery life using OBD parameters

I want to calculate the battery life of a car based upon OBD2 parameters like engine load, distance traveled, Control Module voltage etc. Can anyone please guide me as to how to do this? If ...
2
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1answer
7k views

Different Battery Voltage

What are the different battery voltages trucks work with? I am aware of 12v and 24v batteries, are any any systems that work with voltages above 24v? Can i safely get a 12 or a 24v system on any ...
0
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1answer
671 views

2002 Honda CRV Suddenly Throwing Multiple Codes and then a Dead Battery

Last night the CEL came on, and I got the codes read on the way home. P0122: Throttle Position sensor "A" circuit low voltage P0139: Secondary HO2S12 (heated oxygen sensor - bank 1 sensor 2) circuit ...
2
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1answer
111 views

Constant drain on battery solution

I have a 2012 Ford Fusion SE. My problem is that my dc power outlets (cigarette lighter) are on continuously. I was charging one of my cell phone battery packs and as I unplugged it I noticed that ...
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1answer
2k views

Honda Civic hybrid won't start

My Honda Civic hybrid won't start. No interior lights, no power. Can I jump start the battery under the hood? Not sure since it is a hybrid and has two? batteries. I did not drive it for 3days. ...
3
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3answers
4k views

Should fuel pump noise be changing according to electrical load and RPM?

One thing that bugs me about my car is that the fuel pump noise is fairly inconsistent. Turning on the lights, aircon, defroster, etc. lowers the fuel pump speed and gives a lower pitched noise. It ...
3
votes
1answer
727 views

1997 Toyota Camry - Battery is just fine one day, but drained the next

Went to start my car (1997 Toyota Camry) which was running just fine the day before. It didn't start, as the battery was drained. It took forever to charge back up. What would cause the battery to do ...

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