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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1answer
20 views

Using li-ion battery on motorcycle with existing minimum current draw

I own a Ducati 848 motorcycle which is well known for needing battery tender. Most of the owners of such bikes (along with their bigger brothers 1098) especially since they are not riding them every ...
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Don't understand battery test results

My battery tested at 660A. Its CCA rating is 760A. Its 100 deg temp here. Shouldn't a good battery read much higher than 760 CCA at this temperature? Or is the test equipment compensated for ambient ...
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368 views

Battery or what?

A few years back I picked up a 1989 Harley Davidson Sportster. I t was originally an 883, then the previous owner put in a 1200 cc motor. He threw a rod, so he said and had to have the cylinders bored ...
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Battery light is on causing problems with audio system

I have a 2004 mustang GT with the 4.6L N/A V8 and I am having some troubles. My car had some issues about a month ago. And I had to replace the intake manifold the alternator the water pump and the ...
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Is 15 Volts too high of a voltage to run on automotive electrical systems?

Is 15 Volts too high of a voltage to run on automotive electrical systems? And if so, would filtering the current thru an old style voltage regulator work to lower it to an acceptable voltage ???
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5answers
59 views

Is a battery charger worth it?

I have a parasitic drain on my car battery. I have a fairly old Ford Fiesta brought from a second hand garage a year ago. It has a new battery. I went to one garage who did a diagnostic test and said ...
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52 views

Do I need to replace my batttery or will it recharge by driving?

My question is different. That question is asking about how long to start the car, I’m faking about how long it should stay on after it’s started because it keeps shutting down again. I put a new ...
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1answer
37 views

Hot battery, just sitting

I pulled the battery as it was acting funny, thinking terminal resistance was the problem. Even though it showed 12.5 volts sitting there, under any load it went down to 8, so had a dead cell or two ...
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Delco 79PG 840CCA has a date of P107R. What does that translate to in dates? [duplicate]

I can not figure the date of manufacture on this battery. Please help!!! Thank you in advance.
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23 views

Battery Corrosion Buildup on Positive Terminal

Earlier today when I went to move my car, as I attempted to crank it over all the dash lights went out and didnt return. This has happened 3 times - this being the 3rd - since I've owned the car - I'...
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21 views

Nissan Juke 2017 plate … battery

My father-in-law was looking after my 17 plate juke while I’m travelling, he let battery die . He recharged battery but now ignition won’t turn off and car will not lock
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Car won’t start without a jump, and then shuts off when I touch the brake

2010 Sukuki won’t start unless I jump it, and when I put my foot on the brake it shuts off and will not start again. Turn signals and lights come on and the door buzzer buzzes.
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Car battery at 11.8v in the morning and 12.5v after 20 minute drive bad?

If my group 48/H6 70AH 120RC Led Acid car battery is at 11.8v in the morning and 12.5v after a 20 minute drive is it bad? My van and battery are only 10 months old but I do frequently use the battery ...
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1answer
50 views

Emergency flashers drain the battery in 5-10 minutes

I have a 5yo Honda CRV. Recently I had two episodes when the car did not start after it was left with emergency flashers (hazard lights) on for 5-10(?) minutes. I had to ask someone to jump-start it (...
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Battery status indicator confusion?

I got 45 ah battery in my car full charged 12.6v and has GREEN colour on the too indicator. It was left unused recently for 2 days, and next day, I checked the battery which gives 12.4v, however, the ...
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Battery voltage confusion?

My car battery 45ah before engine start gives 12.6 Vol which means it is fully charged. Now, engine crank and the multimeter reading shows 14.4 v and continue to stay which simply implies that ...
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27 views

battery cca that is greater than what the vehicle specs require

Will long term use of a battery with cca greater than what the oem specifies damage the electrical system because of exposure to the excessive amperage?
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What can cause a complete battery drain while plugged into charger?

I own an Aston Martin Vantage V8 stationed at Mallorca, which I use when on vacation. Last year, the car had a new high quality battery replacement. The car is plugged into a charger when parked in ...
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What's this fibrous box enclosing my battery?

I have a 2015 Golf whose battery needed replacement. I noticed that the battery tray was designed to accommodate three different lengths of battery, with the factory battery being the shortest (and ...
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18 views

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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1answer
37 views

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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1answer
42 views

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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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
58 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
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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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74 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
358 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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1answer
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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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29 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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3answers
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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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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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24 views

Can I use a battery isolator and have a lithium battery and lead acid battery charge off of the same alternator?

The lead acid battery is for a high current application (650 amp @ 3 min max) and the lithium is a house battery. The lithium is a 12.8v nominal. It charges to 14.6v then the BMS cuts off incoming ...
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3answers
3k views

Alternator dying so junk car?

The alternator store rounded the bolt on my alternator so I can’t get it off my 2004 g35x. I changed the belts (there are two one for ac and one for alternator) since I did that the car has a voltage ...
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1answer
22 views

Smoke from one of the acid holes of the battery

I have a car that I don't drive frequently, so once or twice times per week I turn on the car, but sometimes I can't turn on the car so, the battery is discharged because of the time not being turned ...
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2answers
41 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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2answers
43 views

Car seems it won't start but eventually does

My car is an Opel Corsa B. Recently, it started having trouble to start. When I turn on the key, the car behaves like the battery is empty (slow cranking -low choking sound- of the engine and the ...
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2answers
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2011 Chevy Cobalt. starting problem

How do i tell when battery is charged. It reads 7.4 % right now on battery charger. My 2o11 chevy cobalt got the keys locked inside and drained battery after i got the keys out of the car . I tried to ...
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1answer
29 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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2answers
55 views

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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2answers
51 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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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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0answers
17 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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4answers
65 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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1answer
17 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
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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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1answer
332 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
25 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 ...