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Batteries

Batteries are sources of chemical energy that are used in circuits to provide electrical energy for a wide range of useful devices. Any questions and answers regarding batteries or other power supplies would be welcome here.

4,818 Questions

How heavy is a 12 volt battery?

It varies with the size of the battery. They do not all weigh the same.

How do you turn the battery light off?

Check voltage to make sure engine running voltage is between 13.5-15.5. If not, replace the alternator.

How long does a 4-cell lithium-ion battery last in a 15 asus?

4-cell lithium-ion battery can last 1 - 2 hours in normal use. The total lifetime of battery life is dependent on the type of battery your laptop has, how you use the battery, how it's charge, and how well you take care of the battery.

How does a battery opperate in terms of the law of thermodynamics?

The first law of thermodynamics can be used to explain the operation of a battery. The law states that energy can neither be created nor destroyed. This can be used to explain how the energy of a battery is converted from chemical to electrical energy.

Will a 24 volt 1.2 Amp charger charge the same as a 24 volt 1.5 Amp charger?

Yes, only it will take the 1.2 amp a little longer to fully charge a battery than a 1.5 amp charger.

Can i wire a 7.2 volt motor up to a 18 volt battery will it just burn the motor out?

you can but if you do, you will/might: A) kill the motor,B)overload your 18 volt power supply, and C) maybe short a breaker if your power supply is also an ac to dc converter

How do you wire a fan to run on a car battery?

Simple answer is this:

Positive (Red Terminal of the Battery) to the Red wire of the Fan

Negative (Black Terminal of the Battery) to the Black wire of the Fan.

Now more additional Information:

By wiring the fan as described above, you will have the Fan running 100% of the time.

a. You can put a Toggle switch in the vehicle and then you are responsible for turning the fan ON and OFF. If you forget to turn it on, then you will overheat, if you forget to turn it off, you will kill the battery.

b. You can wire it another way..... Instead of taking Power from the Battery, you can buy an attachment (Electrical Connector) and receive your RED POWER from a source that is ONLY ACTIVATED WHEN YOU TURN THE KEY ON. This is a better way of wiring the Fan and you can ground the Fan to the Battery or chassic. This is a BETTER WAY, not the BEST WAY.

The reason your Fan comes on when the fluid gets to certain level is FUEL is Expanded when heated and increases your mileage and if the fan is ALWAYS RUNNING, it takes longer to heat up your car. Many of the repairs to the FAN is done by replacing the FUSE RELAY. This is the BEST WAY to repair the system

Who invented the first battery?

Alesandro Volta invented the first battery.
The first actual battery was invented by a man in Italy named Alessandro Volta in 1800. Volta was a physicist who was born in February of 1745 and died on March 5, 1827.

What is the battery life for the IBM Thinkpad T43?

"The only information I personally found in my search is that the life of a IBM Thinkpad T43 battery is 3 life test. If you know what a life test is, I hope that helps."

Why does an Alienware M15x battery show that it has charge and lights up on the indicator yet turn off if unplugged even though you have the battery set for on?

It is possible that the charger is plugged into the wall, but slips out of your computer. Also, you may need to replace your battery if that is not the case. After so long most rechargeable batteries start to lose their maximum lifespan.

How do you calculate total emf in series connecte cells?

With cells connected in series, the total emf of the 'stack' is simply the sum of

the individual emf's of the individual cells.

-- Even if one cell is connected backwards in the string. Then its emf is considered

negative when the sum is being performed.

-- All of this is true only as long as there is no external connection between the

ends of the stack, you're measuring the emf on an 'open-circuit' basis with a

voltmeter, and the cells are not providing any current to an external circuit.

Once the series combination of cells is connected to an external circuit and begins

to produce current, the total emf at the terminals of the stack will decrease. It'll

depend on the magnitude of the current, and on the 'internal impedance' of each

cell. If the cells are not precisely identical and in identical states of charge, then

a calculation of the total emf is virtually impossible.

What is fill factor?

Fill factor is the ratio (or the difference) between the actual output of a solar cell or panel, and its theoretical output (which can be about 30%higher).

What is causing a battery drain with the key in the on position and no accessories on?

The key being in the "on" position itself. As for rapid battery drain, you could have a bad battery or there could be a loose connector.

Source: Personal experience

What can cause a battery to go dead?

When all of the energy is drained from usage and just keeping whatever it was in use for working. You should always keep your batteries fully charged.

Tom Tom one 14644 how to replace battery?

To replace the battery in a TomTom One 14644, first, ensure the device is powered off. Use a small screwdriver to remove the screws on the back cover, then carefully lift off the cover. Disconnect the old battery from the circuit board and replace it with a compatible new battery, ensuring proper connection. Finally, reassemble the device by replacing the back cover and screws.