Skip to main content

Questions tagged [battery-drain]

A loss of electrochemical potential between positive and negative terminals a car's battery, creating a loss of power, sometimes to the point of being unable to start the vehicle.

Filter by
Sorted by
Tagged with
0 votes
1 answer
397 views

SUV (05 Toyota Sequoia) won't start via jump anymore

Earlier this month, the latch on my back hatch door broke and the hatch wouldn't lock closed. What I hadn't realized was a rear dome was popping on and off when people bumped the truck and at some ...
0 votes
0 answers
21 views

Battery issues Toyota yaris

My battery keeps draining every few days it’s virtually new & the alternator is working as it’s pumping 12-13 volts every time check it…my reversing lights have stopped working upon inspection I ...
1 vote
1 answer
476 views

Changed out radio and getting battery discharge error when engine running

So today changed out my Kia radio that was in my Kia Forte 2020. Seems my country brought in the low spec model at the time. This is the old radio: I changed it out to the touch screen that usually ...
1 vote
1 answer
26 views

Remote battery disconnect drains the battery

Installed a remote battery disconnect switch yesterday. I tested once and it worked as intended. Today, after about 24 hours, the car won't start. I checked the battery with a voltmeter and it has ...
1 vote
2 answers
2k views

Mitsubishi Outlander Parasitic Draw

I have a parasitic draw of 280 milliamps with everything turned off and my key fob 15 feet away from the vehicle. I latched the hood latch just in case there is a sensor in it. I pulled all fuses ...
0 votes
1 answer
36 views

2000 Ford F150,,parasitic drain question

What causes the radio to come on when reconnecting the battery? Also what could cause a 9.29 amp parasitic drain when parked and all accessories are off? Any replies are greatfull.
1 vote
2 answers
6k views

How about how many amps does a vehicle pull at idle

Assuming the lights and stereo are off, how many amps can you expect an idling vehicle to pull? In this particular case I'm wondering about an F350, with flexfuel engine?
3 votes
1 answer
1k views

Nissan Note 2012 battery drain

I have had problems with my 2012 Nissan Note (the boxy model). The battery would be flat after a couple of days, even when driving occasionally. After leaving the car parked and locked for 20min, ...
1 vote
3 answers
7k views

Brand new lead acid car battery reads only 12.33v. Is it faulty?

Yesterday I purchased a brand new, maintenance-free, 12 volt lead acid car battery. Specs: 47Ah and 450CCA. Before I install it in my car, I measured the voltage with a catIII digital multimeter. It ...
1 vote
1 answer
34 views

Can a portable jump starter drain my car battery if being used for something else?

I’ve recently went to my dealership to take a look at my battery that I purchased not that long ago and was still under warranty. Well person says that what’s draining my battery is my dash camera, ...
0 votes
1 answer
60 views

Car battery drainage

I own a 2007 Ford Focus SE 2.0 My question is would you happen to know the reason why my battery (which is brand new) is always dead. I constantly have to disconnect the battery in order to be able to ...
3 votes
2 answers
100 views

Battery Voltage drop

I want to install a new stereo for my car which requires 12V. I tested the battery first it and shows 12.29V but when I started the car the battery became 6V. Is this normal? What am i doing wrong?
2 votes
1 answer
888 views

EFB (enhanced flooded battery) I left the lights on for more than a week because of Coronavirus

I have a Renault captur 2016 vehicle with start and stop capability, the battery is EFB 70Ah 720A, I couldn't start the engine with cables connected to another standard battery of another running ...
1 vote
1 answer
258 views

1995 Toyota 4Runner: White smoke, battery constantly drains

I own a 1995 Toyota 4Runner (I was told the engine was rebuilt, so I'm not sure if mileage matters). I got this from my grandpa around 2 years ago, which had been sitting at his house parked for over ...
5 votes
1 answer
415 views

Battery Draw while car is off at 3.24

I have a 2007 Saab 95 wagon... For about 6 months at random about once a month my car has been dead. After calling AAA and they told me there is a draw from the battery at apx 3.24 which is should be ...
3 votes
1 answer
79 views

Radiator cap, / coolant flange and battery drainage issues

I wanted to enquire regarding some work that my mechanic carried out recently. All issues appear to be resolved now but I need to assess what happened at each stage. Apologies in advance for the long ...
0 votes
1 answer
60 views

jump starting car: why wouldn't jump start work when bad battery is more depleted

Please see pic. I was able to jump start on day 1 on first attempt. After the bad battery depleted more over the weekend (day 3), I was not able to jump start easily. I kept trying for 30 minutes, ...
0 votes
0 answers
29 views

Why is my car wont start

My mechanic changed my ecm and programmed it to my 2001 buick regal he programmed both sets of keys i have now all of a sudden car will crank but wont start also battery keep draining. Before he ...
0 votes
0 answers
23 views

2008 scion tc electrical issue

Hey there I have a 2008 scion tc manual transmission. I’ve ran into the problem of the car reading 12v at idle, 11.5 when lights and heat are on and 10.9 when driving. I checked that the alternator is ...
1 vote
2 answers
746 views

How do I fix a parasitic power drain on 2018 Mitsubishi Outlander Sport

I am reaching out desperately looking for help. I purchased this vehicle in April of 2022 and have been through 5 batteries. I tried contacting the dealership and they told me that the battery wasn’t ...
1 vote
2 answers
726 views

How much does disconnected new car battery lose charge over a day?

I have a new five-month old (yes months) battery that is not keeping charge. I disconnected and charged the battery overnight using a trickle charger. I got the bad battery indicator on the charger. ...
0 votes
0 answers
65 views

Alternator doesn't charge the battery when idle with head lights on

My car is a Mitsubishi Magna TH 1999 3.5L Auto. The alternator gives no voltage at idle with headlights & fan on. The battery gets drained. The alternator warning light pops up. If revved a little ...
0 votes
3 answers
1k views

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 ...
0 votes
1 answer
75 views

Battery dead after track day but everything working

Car: BMW M3 (2006) I went to a track day (HPDE event where I drove the car on a road course at its limit for the entire day) and at the end of the day the car wasn’t cranking. I push-started it and ...
0 votes
0 answers
125 views

I have Honda Accord 2018 Touring , Navigation Display Screen not working

I have Honda Accord 2018 Touring, my brother mistakenly reversed the connections to the battery terminals and now the the Navigation display screen won't power on.
0 votes
0 answers
30 views

Battery drained in overnight

My new car bedtime t99 battery got drained in overnight now no display all dead, I tried jump start but shows svs light what is it major problem
1 vote
0 answers
135 views

Car battery fried after 2 1/2 months

I replaced my car battery for my Corolla in mid March. Last week it was completely fried. I went to start it and it had zero juice. AAA came and jump started it with their battery pack starter. I left ...
2 votes
1 answer
65 views

What would cause battery level to suddenly drop about a day after it was driven?

Every few months we have an issue where the battery in my 2006 Audi Avant dies. I've taken it to a battery place and they say that it's perfectly healthy. So I bought a BLE battery monitor and now I'm ...
1 vote
0 answers
32 views

Should 7.5A "Air Con" circuit draw amps while vehicle is off?

I believe that my truck (1999 Nissan Frontier SE 3.6L) has a parasitic draw issue. Was going through the fuse box checking voltage, the "Audio" 15A circuit had full voltage, which I believe ...
0 votes
3 answers
3k views

Two day old car battery voltage is reading 3.6v

Purchased a brand new vehicle on Saturday, drove it around 60 miles total (so, plenty of time to charge a low battery) and this morning it was dead. I checked with two multimeters because I didn't ...
4 votes
2 answers
1k views

result of battery drain

done a parasitic test on battery(new) showed up as 1.74 amps,removed fuses 1 by 1 and found that the 20amp fuse for the coupe console when removed dropped the amps to 0.49, i have a 56 renault scenic ...
0 votes
1 answer
40 views

Battery drains in daily use

my car battery goes flat weekly, even though my alternator output is constant 14.3 Volts. The battery voltage does not drop during the night, however, it decreased significantly by afternoon, as if ...
0 votes
2 answers
602 views

What is the typical battery power consumption of a parked car?

My car (2014 Opel Zafira-B) has some weird electrical issues where it randomly and suddenly drains the battery, sometimes while driving. While diagnosing the issue I also measured the power drain when ...
1 vote
1 answer
625 views

Micra K12 Start/Electrical Issues

My partner's Micra SE (2006) has had starting/electrical issues for a while now. Multiple mechanics have diagnosed bad batteries and replaced with the problem returning within days/weeks of the ...
1 vote
2 answers
9k views

Car wont start even though battery charger says it is fully charged

I have a 2010 ford focus ran and drove just fine 2 days ago, i went out to start it today and nothing. There were no dash or internal lights on at all when i turned the key still nothing no noise at ...
2 votes
1 answer
240 views

2004 Chevy Trailblazer, battery dies but engine stays running & other weird electrical issues

Almost all of my dash lights will come on, airbag, seatbelt, security, ABS, etc.. they all turn on, my battery light turns on, gages all go dead, radio goes dead, windows stop working, power locks ...
0 votes
2 answers
6k 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 ...
-1 votes
1 answer
918 views

Will OBD2 Hud Head Up Display drain car battery if left plugged when car is off?

I am buying a HUD Head Up Display. It goes in Sleep Mode when ignition is off (screen turns off). I asked the manufacturer, they said it uses 0.3mAh when in Sleep Mode (400mA while in use). Is this ...
0 votes
1 answer
220 views

Toyota Tacoma 2006 battery drains when started but returns to 11.8V when not running

2006 Tacoma 6-cyl 4x4, and the battery is 3 years old. Truck would not start this morning, so I checked the voltage - 11.8V. When I cracked the ignition, it just clicked. To me that usually means a ...
2 votes
1 answer
469 views

How to get a rough approximation of how long it would take to discharge battery almost fully when keep ignition on?

I want to do a simple 'test' to see if my motorcycle battery is draining too fast. I've heard that if you keep motorcycle ignition on over night, it will drain. But I could not find any single source ...
1 vote
1 answer
717 views

parasitic battery drain on my 98 jeep cherokee

I have an amp draw of .85 tested from my negative battery cable on one lead and the neg. post on the other lead of my multimeter, I have removed every single fuse and relay and unplugged every single ...
0 votes
0 answers
33 views

Battery drawdown

I have a 2014 dodge ram. The battery goes dead after a few days of not driving. Replaced battery twice. Checked for draw down and found a 2.3 Amp draw down. My radio had stopped working a couple ...
2 votes
0 answers
44 views

How can I diagnose the cause of a flat battery?

Two days ago I could not start my car. The battery seemed flat. I seldom use my car and when I use it I only drive short distances. I carried the battery home and charged it with a smart charger. ...
5 votes
4 answers
6k views

Nearly drained battery for 2 weeks - how much damage was done?

I recently made a mistake of starting my car, and only driving it for a short trip multiple times in below-freezing weather without letting the car fully warm up. This was after the car had sat for ...
1 vote
1 answer
934 views

Why is my Volvo XC60 Battery discharging to 6V when parked for 2 days (dead flat)

I have a 2014 Volvo XC60. A mechanic recently replaced the (main) battery with a (non-Volvo) Century battery (AGM-type 12v lead acid, 70Ah). I parked the car in the garage for 2 days and the battery ...
1 vote
0 answers
316 views

Car horn's relay always in switched on position;could it be the reason for total battery drainage if car is not started for 2 days

(MG Hector plus petrol automatic-1 year old). My car's battery was suddenly getting drained in just 2 days of not using the car. This happened twice. I took the car to the service centre and they said ...
3 votes
2 answers
3k views

Battery implication to keep doors open while engine is off

Can there be significant battery draw if I keep the doors open while the engine is turned off? In my case I park a minivan (Town&Country 2016, although I'm asking more in general, not specific to ...
3 votes
1 answer
4k views

Battery Drains Every 1-3 Weeks

I have been experiencing a slow draining of the battery for the past 1-2 months wherein the vehicle will be fine and suddenly the vehicle will not start. First thought was the battery, as the ...
0 votes
0 answers
96 views

Lithium vs lead-acid motorcycle batteries: which lasts longer in the winter? Lower capacity vs lower discharge rate?

My question I would like to understand a bit better the pros and cons of lithium vs lead-acid 12v batteries for a motorcycle, especially during the winter. Yes, I know, google is your friend, and I ...
1 vote
0 answers
43 views

Mazda 6 2014 sport

The last week in a half my Mazda 6 has been having issues with starting at first you could hear it would have a tough time starting like there was not enough power going to the car to get it going but ...