What does it mean to say that your car has a 12V battery?

How do you tell a 6 volt battery from a 12 bolt battery?

It'll say 6v or 12v written right on the battery.

How do you tell a 6 volt battery from a 12 volt?

It'll say 6v or 12v written right on the battery.

What kind of plastic is a car battery made of?

My car battery and my tractor battery say the case is made of Polypropylene.

I need to charge my lawn tractor battery. My battery charger has 3 settings on it. Which charger setting should I use?

The settings on your battery charger may vary the charge voltage (e.g. 6V and 12V) or the charge rate (e.g. 2A and 6A). Because you say that your charger has three settings, I would guess that either the charge voltage is fixed at 12V (and you have 3 choices for charge rate) or you have one setting for 6V and two choices for charge rate at 12V. Make sure the voltage is set to the markings on your battery. This is most likely 12V, but it's best to make sure. If you can't match the setting (you have a 12V only charger and your battery is 6V), you must use another charger or you are likely to damage the battery and to risk explosion. The charge rate setting is meant to allow you to charge batteries of different sizes. A lawn tractor battery probably should be set at the lowest charge rate, say 2A. Larger batteries, like the one in your car, can be charged at higher rates. Charging at a low rate prevents the build-up of heat in the battery and reduces the risk of damage.

Car won't start after sitting overnight but battery is new?

When you say it won't start I am assuming you mean it will not turn over. If that is the case and the battery is new, then something is pulling power from the battery. You have a light somewhere that is on or you have a relay that is stuck.

How long time will be taken by the 12V 7Ah charger to charge a 12V 22Ah battery?

A charger designed for a 12 volt battery should not be used to charge an 8.4V battery. It is likely to damage the battery and in the worst case can cause a fire. There are some chargers that can be used with a variety of battery voltages and chemistries but unless you are certain that the charger is safe and effective on a different battery voltage, assume that it cannot be used.

When you add a second battery to a series circuit what happens?

Adding a seound battery to a series circuit will increase the voltage, and require less current to keep the lights (if there are any on) as bright. Say you have a 6v battery, then you add another 6v battery. the voltage of the circuit would be 12v

To run 12v dc things in a car the battery outputs 12v regularly but it can go as high as 14.4 when the engine is running I need a circuit to regulate this at say 12v 10 amps to prevent over voltage?

the alternator is what puts out the 14.4 volts. if you wish to figure out the circuit use the formula A*R=V so you take the voltage 12 divide by the amp 12 and you get 1.2 as the resistance. so in your circuit, the max allowable load is 1.2 ohms.

How do I Pull a battery out of a car?

You say heave! ho! heave! ho! and pop there it is! out of the car :D

How long should you charge your 12 volt auto battery 35 amps 13.5 volts DC?

I think you mean 35Ah (Ampere-hours) This depends on the amount of energy that can be stored. The amount of energy in car batteries is usually expressed in Ah, and depends on the voltage of the battery. In Europe, mostly 12V, 40Ah to 70Ah. Let's say a battery of 35Ah 12V (in reality, a fully charged lead-acid battery will have 12,65V over its open poles) needs to be fully charged. 35Ah means tha it can, theoretically, deliver 35A at 12V during 1 hour. That's is a total power storage of 12x35 = 420Wh = 1512kJ (kiloJoules) The amount of current flowing into the battery will charge (by an electrochemical process) the battery. So it's not really the voltage of the battery, but the current that's important. Unless you know the internal resistance of the battery, You can not really calculate this. But now practical. You can charge a car battery at a pretty high current, although quality deteriorates with higher currents (that's why professional chargers will use a pulse charger) , so your 13,5V will not be too high. Car generators can deliver up to 16Volts to a battery. What I suggest is this: measure the battery voltage, load the battery with the 13,5V, and measure again after 10 minutes. Check the voltage of the battery, and do not exceed 12,5V. Even better: Load the battery, and meanwhile measure the current and voltage. Now you can calculate the internal resistance of the battery. A word of caution. Car batteries contain a highly poisonous fluid, a mix of water an sulfuric acid. Don't play around with it, DON'T SHORT IT, don't reverse polarisation, This fluid causes severe burns. Be careful.

How long will a 12v 1A battery last on a 12v 550mA fish finder?

There's no such thing as a "1A" battery. If you look at it more closely, you may find that it's rated "1AH". In that case, the math says that after being fully charged, that battery would run that fish-finder for 1hour 49minutes, although the battery voltage might begin to sag toward the end of that period. If the battery doesn't say "1AH" on it, then ignore this whole discussion. There's not enough information to answer the question.

How long can a car sit idle before he battery dies?

Hard to say as it depends on the battery and how good it is. A good battery can sit for 6 months and easily still start a car and 1 year is not out of the question.