Parasitic (or ignition key off) drain is the cumulative load produced by electrical devices, for example, emissions computers, clocks, security alarms, radio presets, etc., that operate continuously after the engine is stopped and the ignition key has been switched off. Normal parasitic loads are below 75 milliamps (.075 amps). When the parasitic load is greater than 75 milliamps (.075 amps), batteries will drain more quickly. Glove box, trunk, and under hood lights that do not automatically turn off when the door is closed or shorted diodes in alternators are the most common offenders. Cooling fans, power seat belt retractors, radios and dome lights left on, alarm systems, and electric car antennas have also caused batteries to drain overnight. Leaving your headlights on will generally discharge a fully charged car battery, with 90 minutes of Reserve Capacity (36 amp hours), within a couple of hours.
It is highly recommended, especially if you are using a sealed wet "Maintenance Free" (Ca/Ca) battery, allow to thaw if frozen, fully recharge it in a well ventilated area with an external battery charger, remove the surface charge, and load tested both the battery and the charging system for latent damage from the deep discharge. You could have a damaged or bad battery. If the alternator is warm and the engine is cold, then check for a shorted diode in the alternator.
Below are some methods that are used to test the parasitic load with the engine NOT running, under hood light disconnected, all accessories switched off, and the vehicle doors closed:
I have an 89 Mark VII LSC with 300,000 plus miles have had for 10 plus years and love it, as for battery drain i have found that a notorious problem for this is the Voltage Regulator mounted on the passenger side wheel well, very easy to change, 2 screws and a plug, I keep a spare in the trunk, they cost about $10.00 , and when they fail it will drain your battery in less than 12 hours time, unless there was an obvious reason for battery drain such as Lights left on, etc...etc.. this is always my first suspect, they will usually fail approx every 5 years, I also have found that the alternator will also only last for right at 5 years if you have a good one, so I always change both.
Out of gas versus dead batteryRunning out of gas in and of itself would have absolutely nothing to do with a dead battery.On the other hand, IF someone, not realizing that the gas tank was empty, were to continuously crank, and crank, and crank the engine erroneously thinking they could get the engine to start, then it is for certain that they will drain the charge from the battery and thus "kill" the battery.It's not the being "out of gas" that kills the battery, but the vehicle operator that kills a battery.
Unless it is a rechargeable battery you cannot charge a dry charge battery. If it is rechargeable you need to purchase a charger for that size battery. Automobile batteries are not dry charge.
No the battery don't have a magnetic charge.
how do you charge a vespa battery
No, it takes electricity to charge a battery.
A battery charges nothing it accepts a charge from the alternator.
You can not charge a battery in the microwave.
To charge a battery amperage is needed. This is done with a battery charger that supplies an amperage to the battery when the battery is connected to it. The rate of charge is dependant upon the discharge condition of the battery. The time to charge the battery is dependant upon the rating output of the battery charger.
no you can not will it not charge the battery to 12volts?ie charge it but not fully
Connect a battery charger to the battery and let it fully charge. Do not charge it with the cars alternator. If it will not accept a charge the battery needs replacing. Connect positive (+) red cable to positive post and black negative (-) cable to negative post. Trickle charge the battery do not fast charge it as the charge won't take. Sure it will start the car a few times but a good charge to a battery is one that is done slowly
If you are plugging in a battery charger connected to the battery, yes it will charge the battery. If you are referring to plugging in the block heater, then NO it will not charge the battery it will only warm the oil in the engine block. If you are referring to plugging in a battery heater then NO it will not charge the battery and will only keep it warm.
If you charge the battery and it is not working then there is something wrong with the battery. Batteries are not usually repairable.
You do not charge a battery using a battery eliminator. The eliminator is not a charger, it is an eliminator that allows you to run the device.
There is no only one way to charge it and that is with a battery charger. A 15 amp battery charger will charge it about as fast as it needs to be charged.
you charge a atv battery at 2 amps or lower
How do you charge a 2002 BMW Z3 battery
Charge engine from battery? Rephrase your question as it makes no sense.
The official charge of a battery is measured by the specific gravity of the electrolyte. For a good battery and alternator, full charge is noted when the alternator output current is just enough to carry the load, plus a bit to maintain the battery, and the battery voltage is normal.
HOW BIG IS THE BATTERY?
can i re charge my battery without unconecting the battery on my s type jag
Yes, your can charge the battery with the radio on. But why would you want to do this? It will just take longer to charge with something drawing current from the battery.
The five types of charges that can be applied to a battery are: initial charge, normal charge, equalizing charge, floating charge, and fast charge.
Yes and also you can charge it on a wooden bench, a lawn chair, a flower pot, and a tub along as it isn't full of water.. or if you want to get adventurous you can charge it on a mountain, on a dead goat body, in an airplane, on a boat (along as it isn't sinking), or in your hands aslong as its hooked up to a charger and not in a conductive liquid you can charge an auto battery anywhere. Placement will not affect its charging capabilities unless the battery is dead which is caused by the metal plated in the battery acid being corroded which is unavoidable. It is an old wives tale that concrete kills a battery.
The same way you charge a car battery. The only difference in them is that the marine battery is a deep cycle battery, meaning it is designed to be run completely down without damaging the battery. Ideally you need a charger designed to charge deep cycle batteries but you can charge one with a normal battery charger.