Car Batteries

Why does the battery discharge in a few hours and then after a booster start is back OK with 13 volts?


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2006-02-04 21:12:04
2006-02-04 21:12:04

You either have a defective battery or something is on and drawing power from the battery. Look at dome lights, trunk light, under hood light, brake lights, glove box light, see if anything is on. If the battery if over 3 years old or has be discharged more than once, suspect the battery. I used to have this problem with an '89 Thunderbird. It turned out to be a bad ground. On my car, it was the bolt that holds the little wire that connects the frame of the car to the negative battery terminal was rusted and corroded. A simple cleaning fixed it.


Related Questions

A battery booster is an emergency device for automobiles that can be used to jump start a car when the battery has died or has insufficient power to start the engine. A battery booster hooks into a car engine with cables that are similar to standard jumper cables. The unit contains its own battery that provides a charge when needed. In most instances, the batter booster is rechargeable so it can be used over and over again as needed.

Yes, you can start diesel engine even if you don't have battery in!

Booster batteries are the batteries that you use when you want to jump start a car. Regular alkaline batteries are the kind that you put in a flashlight or your TV remote. The alkaline battery is way cheaper than a booster battery.

sure connect the positive terminal directly to the booster battery and the negative battery terminal to the body

A cable booster also known as a jumper cable is used to connect with a discharged battery to a power source to jump start the vehicle. This is used when your vehicle can't start up.

1. connect red booster cable to weak battery POSITIVE post. 2. connect red cable to POSITIVE post on booster battery. 3.connect black cable to booster battery NEGATIVE post. 4.make final connection on engine block of stalled vehicle away from the battery. STAND BACK,start vehicle and remove cables in reverse order of connection by disconnecting engine block connection first.

Yes you can but not with the engine running. If you do this the alternator will kick in and transfer more amps than your bike can handle. Jump start it from a cold battery without the engine running and you'll be A OK!

there is not stop air bag while doing work remove leads of battery and leave car for upto 2 hours for discharge the you should be alright to start work.

Often it's an alternator diode. Check the battery first. When batteries start to go bad they can often start to discharge over a couple hours. Take it to an auto parts retailer and have them test the battery and alternator for you. I had the same problem with my '92 Windom (ES 300). It was a faulty trunk mounted CD changer that was draining the battery.

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.

Get a donor car and use it's battery to start your car. You will need a set of quality jumper cables. Or you can charge the dead battery on the car for about 2 hours with a good 10 amp battery charger.

get a battery with more cold cranking amps or use octain booster

i had discharge when i was 9 about to turn 10

To determine the ampere-hour rating of a battery, read the label on the battery or consult the manufacturer's specifications for the battery. That is the best way. It is also possible to measure it, but you will be using up capacity on the battery and, if it is non-rechargeable, that will exhaust the battery.First, decide what the discharged state is. This could be a certain voltage under load, the inability to provide a certain current, or (best in the case of a lead-acid battery) the specific gravity of the electrolyte. In a typical 12V lead-acid battery, such as in an automobile, the discharged voltage is around 10.5 volts under load. {This writer does not know the specific gravities involved - someone else, please feel free to refine this answer.}WARNING: batteries generally emit explosive gases when being charged or discharged. Take necessary precautions, and vent the battery as needed.Starting with a fully charged battery, draw a load of some current, and find the current that will discharge the battery in eight hours. Start low, unless you have some idea of the projected rating. If the projected rating is, for instance 80 ampere-hours, draw 10 amperes.Recharge and repeat as needed to obtain a statistically consistent result.When you have the amount of current, say 15 amperes, that will discharge the battery in eight hours, multiply that number by 8, in this example giving 120 ampere-hours.The reason for multiplying by eight is that is the convention for reporting a battery's capacity. You say "120 ampere-hours at an 8 hour rate", which simply means 15 amperes for 8 hours. If you were to actually pull 120 amperes, the battery would discharge in less than one hour, and if you were to pull 1.5 amperes, the battery would discharge in greater than 80 hours.

I'd suspect the alternator. The vehicle can run off a minimal battery charge, but if the alternator has failed the battery will eventually discharge. Understand that a battery is simply an electrical energy STORAGE DEVICE. The battery is there so that the engine can be started, but once the engine is running the alternator is supposed to re-charge the battery, replacing the electrical energy that was used to start the engine. BTW, automotive batteries are not designed for "deep cycle discharge", and you should try to avoid that if possible.

It is permitted to discharge fireworks between the hours of 9am and 11pm on the day before and after the 4th of July. However, you are allowed to discharge fireworks until midnight on the 4th.

This is a measure of battery capacity. It relates to how long a battery can produce a certain amount of current. For example, a fully charged 1500 mAh battery can provide 100mA for 15 hours (or 50 mA for 30 hours or 200 mA for 7.5 hours, etc.) The battery rating is the capacity for a new battery. After many charge/discharge cycles, you will start to see a reduced capacity.Related note: The capacity of a battery doesn't relate to the maximum current you can draw from the battery - that depends on several factors including the type of battery, its size and construction. For example you might be able to safely draw 15 Amps from a hobby style 1500 mAh Lipo (Lithium Polymer), but don't try to get 15 Amps out of 1500 mAh AA Nicads.

Because you left the lights on all night. This drains the battery. Connect a battery charger and wait about 3 hours. Then the car might start. If it does not start buy a new battery or a new car whichever you prefer.battery juice is gone.

A normal battery is ~80 Amp hours. so a 12 v draw at 25 Amps = 300 W. The battery will last about 80/25 = 3.2 hours. Then it is dead and you cant start the car. If you run it for 1 hour the car might still start. But with an old battery it can be 50% less time.

Does the Battery Need Replacement?Probably, YES. Automotive batteries tend to self-discharge after a few months, and in a discharged state, they tend to develop a bad condition called "sulphating," which results in internal high resistance shorting within the battery.As long as that battery has been out of routine service [charge/discharge cycling] it is probable that the sulphating has ruined the battery.Besides, if the battery was a few years old when the vehicle was "put out to pasture," plus the few years it sat inactive, then the battery is probably worn out, even if it had been kept charged.Replace the battery.Before replacing the batteryIf the battery did not charge after the jump start, the problem is either the battery as described above, or the alternator is not providing a charge. Before you replace the battery, have it checked out at your local AutoZone or similar auto parts store. They will do it free of charge. If the battery is ok, then have the alternator checked out.

=== === 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.

change the battery every time I've had that it's been the battery the likely problem is not the battery but the solenoid that is attached to the starter motor

If the battery is worn out it may not hold a charge for 8 hours. There could also be a short somewhere causing the battery to drain down.

It depends on the amp hour rating and discharge condition of the battery to start with. The output voltage of the solar cell should be at least 13 volts. At that voltage the cell has an output of 1.15 amps.

yes. the discharge is a way of cleaning out you vagina ready for the period cycle to start.

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