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.
If its an old battery the cells could be dried up, meaning there is not enough battery acid in it, or if you leave your lights on, or a bad alternator could be causing the battery to not charge while the car is running.
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, it takes electricity to charge a battery.
No the battery don't have a magnetic charge.
how do you charge a vespa battery
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.
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.
A battery charges nothing it accepts a charge from the alternator.
You can not charge a battery in the microwave.
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.
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
DC Charge
Not necessarily bad, but if you do not exercise the battery once in a while, by draining it and then recharging it, the battery can loss the ability to hold a charge. But the device itself will not be damaged. Unless lightning comes and kills everything...