most likely it is because items, such as lights (trunk, etc.) are left on. Or that there is a short in one of the alternator diodes (is it charging correctly?). Or the battery is just old and no longer holds a charge. How often between running the car? It could be tha you dont give the battery enough time to charge sufficiently.
All of a vehicle's electicity using devices drain/discharge the battery, but during the time the engine is running, the alternaror is supposed to keep the battery recharged. If the engine IS running, but the alternator is NOT providing enough current to recharge the battery then ALL of the electricity using devices discharge the battery. Some of the "onboard" computers draw some slight amount of power even when the ignition switch is off, but they do not use enough power by themselves to significantly discharge the vehicle battery. Any electricity using device which SHOULD be turned off when the ignition is off, BUT... which due to some fault [such as a "stuck" relay for example] that keeps that device still turned on when the engine is not running and the key is off will also discharge the battery. Or, just leaving the ignition switch on without the engine running, or the headlights or parking lights on, or sound equipment left on will contribute to discharge of a vehicle's battery.
Either something is on and is drawing current from the battery or the battery itself has a dead cell which will drain the battery. If the battery is over 3 yeas old, replace it.
from me constantly raping your cars exhaust while you sleep.
If the defect is causing a parasitic drain, yes.
If the battery is bad, you may only hear clicks. It could be the starter, but I would check the charge on the battery first.
would discharge in 18 hours
It typically indicates that the alternator has failed and is no longer charging the battery. Once that happens, the battery will slowly discharge and the vehicle will no longer start. The battery is simply an electrical storage device and if the alternator is unable to replace the electrical energy used LAST time the vehicle started, the battery will discharge. Automotive batteries are not designed for "deep discharge", meaning that if you allow your battery to discharge too much you are causing harm. Once the warning light comes on it would be wise for you to take care of the problem as soon as possible.
The voltage reg is sticking and will run down the battery.
Battery and brake light coming on means the Alternator is not charging the battery . It could either mean a bad circuit connection or the alternator is just shot. Have the Alternator checked.
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alt belt.
A quick way to reset the check engine light would be to disconnect the battery for a short while
A dead cell within the battery itself will drain the battery. There is no fix for this except replacing the battery. You may also have something that is pulling power from the battery. Examples are under hood light, dome light, glove box, trunk, courtesy light, and any numbers of relays.
Yes, but it would not be cost effective. The battery has more "capacity" than a capacitor. Best to simply charge the storage battery directly from the wind mill.
I'm not sure if this may be YOUR problem but when I was having my battery discharge on me, I ended up disconnecting the passengers electric seat. Again, I'm not even sure if that was the problem or if it's your problem either, but it seemed to work for mine.
A very low (but not quite dead) battery will do that. It's the starter relay trying to work.
The alternator is failing.
Discharged battery possibly or trouble with starter.
Low battery, bad connection or starter.
You know when the starter on your nissan maxima is going bad when your car doesnt start/ even when someone gives you a boost, all your fuses are fine, and none of them are NOT blown. You know its your starter and NOT alernator when you take another battery from a car thats been driven and their battery is ok and you put it into your car and the car will not start. If its the alternator, then the car would start in that case.
=== === Some types of electrical shorts do cause the battery to discharge. But usually a bad alternator just does not charge the battery. Or does not put a large enough charge back into the battery. This causes the battery to discharge when you start and run the motor. The spark plugs and other things need electricity that would usually come from the alternator is now coming from your battery. If your bad alternator is not recharging the new battery, the battery will soon fail to start or run your vehicle. You need to have your alternator tested. It should be putting out at least 12 volts, usually around 13 to 15 volts.
Only if you could develop a battery chemistry that (similar to the Lead Acid battery) corroded one copper plate during charging and not the other, without generating lots of hydrogen gas, and was reversible during discharge. I have never read of any such battery chemistry. I'd have to say no.
Discharge can be a verb or a noun. "We did not know when they would discharge him from the hospital" uses "discharge" as a verb. "Watch for increased inflammation or any discharge" uses "discharge" as a noun.
Amps vary depending on mode of use. Usually 19 Volt batteries usually have a 2 ampere hour capacity. If you fully charged the battery and connected it to drill and started a timer when you turned it on at full power; you could measure the time to fully discharge. If it ran for 1 hour you would be pulling two amps. On the other hand if you shorted out the battery it would draw many more amps and die quite quickly.
Mine did that for a while, I tried everything, except replacing the battery. When the battery gets low it triggers the alarm. It turned out to be an easy fix
This should not damage the laptop at all, they are designed to be turned on at any time. (Unless of course the battery is dead.)