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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Is there a way to reliably test voltage of a 12V battery when it's not disconnected (i.e., partly loaded)?

I'm having an issue where a fully charged battery doesn't necessarily report the proper voltage when checked from the socket within the car, because in order to have the socket activated, the car has ...
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How can a battery indicator be on when the alternator is providing adequate voltage?

I'm under the impression that the battery light indicates that charge is flowing "out of" the battery. Normally the battery is being continuously overcharged by a couple volts, meaning that electrons ...
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28 views

Isolator or Separator for my Hitachi alternator

I am looking to charge an auxiliary battery for my motorhome, but am not sure if I can use an isolator given the alternator. It is a Hitachi LR160-78B 60a alternator in a 1985 Nissan 720 pickup (...
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37 views

What happen if I connect car battery wrongly?

I have a Renault Clio car. I replaced my car battery with a new one. I tried to start the car but it's not worked. After it makes a smoke from the engine side. Finally I see I had connected the ...
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How long time do I need to run the engine to charge the same amount of power that the starter took

I have a Range Rover 4.6l V8, and I'm wondering if anyone have some sort of estimate of how long time I need to keep my engine running, to charge the same amount of power that the starter took to ...
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11 views

1998 Volvo S70 horn alarm after reconnecting recharged battery

1998 Volvo S70 sits a lot. I had recharged the battery disconnected from the vehicle as the charger initially indicated a "fault". Upon reconnecting the battery the vehicle horn alarmed ...
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9k views

Car battery - Disconnected just positive while doing work

I've installed an extra 12V source in my car and everything is working. While installing it I removed the positive terminal from the battery and left the negative connected. (Resting the positive on ...
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321 views

Vauxhall Corsa won't start, lights/radio working fine

I have a 1.2L Petrol 2008 Corsa that won't start. For the last couple of months the battery light would start flashing once every couple of weeks when starting the engine. I don't do long trips often,...
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3k views

Check Panasonic battery production date

I bought a Panasonic battery. A code is shown on the battery. I am afraid the production date maybe 2014. How can I determine of production date of this battery ? I've checked with the supplier ...
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3answers
11k 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 ...
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38 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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9 views

Exide battery date code [duplicate]

I have an Exide battery with this code stamped on the battery top edge,5LC06E2. Is this the date code .If so when was the battery manufactured
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2k views

Clicking sound when trying to start

We haven't driven this car much in the last month, so it's been sitting in our back yard. Yesterday we tried to start it up, but it is making a clicking sound while turning the key in the ignition, ...
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2k views

Intermittent battery light on 2005 Accord

I have a 2005 Accord LX 2.4L w/ 101k miles and a few weeks ago, the battery light came on. The battery was changed last year. After checking everything, I concluded that it was a bad alternator, so I ...
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82 views

Is a 13.07V alternator voltage too low?

I'm having some problems with a 2006 Mini One D (1.4 l diesel engine). About a month ago the alternator warning light turned on (it only turned off over about 4000 rpm). The belt looked good, so I ...
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12 views

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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1answer
27 views

Charging two 12V batteries wired in series by two car alternators

I have a spare engine sitting around and i've been planning on building a 220V generator from it. I'll be using an old UPS device which uses two 12V batteries wired in series to make 24V and connect ...
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57 views

Jaguar xk battery dying?

My car (jag xk 2006) went dead when I left it parked for 3 weeks. Understandable. I charged it and all ok. I made the same mistake a couple more times. Then one day when I was pumping up the tires at ...
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569 views

My car battery keeps dying, what should I do?

Because I used to leave my car unused for extended periods of time (couple of weeks), the battery can't remain unused 3 days without dying. And using jumper cables everytime is difficult. I bought a ...
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1answer
319 views

Battery dead, 3hrs later fine as usual.Why?

After letting my car sit for 10 days, it seemed the battery was almost empty. It did crank, but you could count every... sin...gle... comppp...ression. The lights got dim with each try, and the clock ...
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1answer
42 views

Car takes multiple attempts to start - bad battery?

It takes me 2-3 attempts to start my car the last few days. Yesterday it didn't start at all (no noise, but the lights/radio worked) and started after I got a jump and pumped the accelerator. I'm not ...
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1answer
34 views

Smoke at post when jumping also is sparking at post when hooking up a short

Trying to jump truck. Battery post started smoking. Is that because cables were rusty and if you see spark on post when hooking up is that for sure a short?
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21 views

Why is my car battery charger not powering on?

I've had my car battery charger for about six months and, just recently, it won't power on. When I connect it to the battery and the mains, the orange light comes on but there is no low humming noise ...
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17k views

how much water can be safely added to a battery?

My 2008 Jetta SE 2.5L has the battery as follows: ENERTEC EMC // 1J0 915 105 AD // 12V 61 Ah 330A DIN // 540A EN/SAE. It would appear that the battery can no longer hold the starting charge after an ...
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2answers
23 views

Drain battery time?

I'm gonna install a camera system in my car and it takes 12v/2a. (12v/1a times 2... it has 2 devices that run 1a each) How long would that take to drain the battery if the car is powered off? I was ...
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25 views

S10 won't start

I have a 2002 s10 that won't start. I had work done to repair an oil leak, drove it home, and it died. Thought it was maybe the battery, which had, in fact failed. I replaced the battery, and it ran ...
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Mazda 6 TS 2006 petrol rev problem

First ever post on here and I’m not very car savvy at all so please forgive the lack of proper terminology, a bit of background first; I bought this car in October of last year and it was going okay I ...
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1answer
35 views

Will a battery designed for northern climates perform poorly in hot weather?

I need a new battery and was recommended this battery. The product page says the following: Designed specifically for Northern climates Pretty much the only place this battery won't fit in is ...
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1answer
12 views

hyundai coupe 2005 replaced battery and horn, indicators and wipers on constant. will not start

Car wont start after battery replacement. Horn blowing constantly. Also indicators and wipers are on constantly.
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2answers
691 views

External regulator just installed and now there is a battery drain that kills my car

My 1996 Jeep Grand Cherokee started beeping and telling me to check the battery. So I had the car tested and it said the voltage regulator was bad. The voltage regulator on these Jeeps are in the PCM,...
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49 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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2answers
48 views

2006 Chevy Impala dying while driving

I have a 2006 Chevy Impala LS (flex fuel) while I'm driving the dashboard sends off a warning of "reduced engine power" as my car loses power and I lose the ability to use my gas pedal. Meaning that ...
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2answers
298 views

intermittent slow starter cranking on saab 9-3 diesel

Sometimes , usually after a long run the starter turns very slowly like it has a flat battery. If I am lucky turning the key again a few times it will turn the engine at normal speed and it starts. It ...
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36 views

Little/no charging but alternator and battery test good

For the past few months, and seemingly getting progressively worse, I've had a charging problem: both battery and alternator test good (checked via charger with alternator test mode and higher-end ...
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3answers
3k views

Ford Flex Navigation Screen “System is off to save battery”

When you turn on the Flex or turn it off in the Navigation Screen the words "system is off to save the battery turn the car on" Anyone know what this may be? Do I need to replace the battery? It is ...
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35 views

Can a battery charger damage your car?

I have a 2013 Mercedes SLK that would not start one day due to a dead battery. I called Mercedes Roadside Rescue, they came out and gave me a jump with a battery charger. Right after that I got an ...
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2answers
39 views

1998 Ford Expedition: Symptoms of dead battery while jumping

I'm attempting to get my 1998 Ford Expedition 5.4L V8 to start after sitting for a few months. Initially, the battery was dead, so I put it on my charger for a while. After the battery was charged I ...
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1answer
15 views

Grounding auxiliary battery & load

I’m planning to add extra deep cycle battery to my RV. It will be charged by the alternator safely by an isolator. I’ll use national parks’s power outlets to charge it. My main concern is the ...
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10 views

Battery drain suspected from door locking system

I have a Mitsubishi L300 van 2005 and one of the doors is not closing properly, hence the light of "opened door" is constantly on. This drains my battery in two days, which I suspect that is way too ...
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1answer
3k 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 ...
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1answer
3k views

Battery maintainer vs trickle charger

I understand battery maintainers, like those offered under the Battery Tender® brand, are used to keep batteries charged for long term storage, and trickle chargers are.... also used to charge ...
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2answers
2k views

How important is it to register the new after-market battery in BMW vehicles?

According to BMW dealership the new after-market battery must be registered to the on-board computer, because, otherwise, the car would think that the old battery is still in and it would end up being ...
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1answer
39 views

New battery shows white signal very soon!

Bought new SF sonic flash start battery and it's just a month old. It has 3 signals..green is ok, white is needs charging and red is contact dealers. I checked for battery indicator status and it's ...
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1answer
1k 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 ...
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1answer
4k views

No kick start in bikes a problem?

The current trend of motorbikes (at least in India, for 160cc and above bikes) is to leave out the kick start. Instead, we have electric start (or self-start, I don't know what's what and why it ...
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22 views

How many kilowatt hours does it take to charge Nissan Leaf from empty? [closed]

The answer is not as simple as 24 kW/h for a 24 kW/h 2012 Nissan Leaf, as the vehicle's battery management system will not allow to charge its battery to 100% (it’s more like 80% to preserve battery ...
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1answer
456 views

Do any car batteries come dry with the electrolyte in a separate container?

Small batteries for Motorcycles and Lawn Tractors are typically sold with the electrolyte in a separate bottle and must be added to the battery at home before installing it. I've never seen a "dry" ...
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1answer
78 views

Cars With 2 Batteries?

Our 2008 Chrysler 300c has 2 batteries instead of the usual one. This is common on boats and RVs but not on cars. It has a large battery in the back far away from the starter motor and a smaller ...
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795 views

My 2000 Lincoln Navigator does not start, just a click

My truck won't start, it just makes a clicking sound. The battery is charged, the starter and solenoid have been replaced and checked all relays, still nothing. I don't know what to do at this point. ...
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2answers
23k 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 ...