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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

What kind of battery is a car battery?

A car battery is typically a lead-acid battery, which is designed to provide high bursts of power to start the engine and also power the vehicle's electrical systems.

Can a 12 volt 1 amp battery charger recharge a 12 volt 180 Ah battery?

Yes, a 12 volt 1 amp battery charger can recharge a 12 volt 180 Ah battery, but it will take a significantly long time due to the low charging current. It is recommended to use a charger with higher amperage for faster and more efficient charging.

Does all battery powered 3d glasses work with any 3d tv?

Battery powered 3D glasses means they are active 3D glasses and they only work with their own manufactured brand. However the compatibility of passive 3D glasses for other TVs are much higher. They work on any 3D TVs or theaters if they use the same passive technology. The passive 3D TV glasses are also lightweight due to no batteries being attatched. Plus, they don't need to be charged everytime before/after use unlike the active ones.

How does a lemon battery relate to the real world?

This might not be a really good answer but you could use one to power a flashlight in a storm when you cant find batteries I guess. Haha. Something along those lines would be the real world application. Is this for science fair?

How do you change the battery in a vestal watch?

Remove the four screws that hold the back on.remove the cover,inside there should be a gold cover through which you can see the battery.At one end there is what looks like a hinge this is in fact the release used a tiny flat screw driver in the center slot to release it.Then the battery can be removed and a new one can be put in.Then click the release back in place to hold the battery in and then screw the back on job done.

What kind of battery does a washing machine use?

Most washing machines use a power cord to connect to an electrical outlet for power, rather than batteries. However, some modern washing machines may use small internal backup batteries to retain memory settings in case of a power outage.

What type of energy conversion takes place when charging a battery?

when a battery is charged the electrons are received by the acidic compound in the battery. then it is stored in battery. then released to anything you wanted.

"if you think this won't work buy a new battery instead of asking such question in web"

Can a Diode be used on a battery charger?

ya. we are using diode in a battery charger to convert ac into dc. 230v dc is step down by using step down transformer

What is the advantages of parallel connection of batteries?

To have a disadvantage you need to have a set of criteria for evaluation. There is no inherent disadvantage. Batteries in parallel have the same voltage as a single battery, but can deliver more current.

What happens if you put the batteries in a flashlight in the wrong direction?

If you put the batteries in a flashlight in the wrong direction, the electrical current won't flow properly, preventing the flashlight from turning on. It's important to insert the batteries according to the correct polarity indicated on the device to ensure it functions correctly.

Can you use a 12 volt battery on a 6 volt system?

Sure you can. But consider what could happen if you did. If precision of time or speed was built into this 6-volt system, a 12-volt battery will make it work faster until something shorts or burns out.

If you need more lasting power for the 6 volt system, you should consider putting two 6-volt batteries in parallel to power your 6-volt system.

Can lithium batteries be recharged?

Yes, lithium batteries can be recharged multiple times. The process involves connecting the battery to a charging device that provides the necessary electrical energy to reverse the chemical reactions that occur during discharge, thereby restoring the battery's energy capacity for future use.

How is direct current stored in a battery?

Direct current is also used for other things. It is not used only to store in batteries.

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A battery can only produce a potential difference between it's terminals, caused by chemical action. So this is Direct Current.

The poles of the battery are permanently one positive (+) and one negative (-).

To put power back into a battery, the voltage must match with the + and - terminals. If the voltage is reversed (as in an AC supply), then the charge will be removed from the battery instead of being added, at each half cycle.

To charge a battery from an AC supply, it first has to be rectified. This can be done simply by passing the current through a rectifier, which will make sure that current of one potential only, will be passed on to the battery.

Alternating current is normally produced by a mechanically rotating field, generated by turning a shaft with coils of wire mounted on it.

Alternating current can also be produced electronically from a DC (battery) supply. This generally involves transistor switches, which vary the current to simulate an alternator. This device is known as an 'Inverter'.

What is the difference between 12V 7AH Battery and 12V 12AH Battery?

Both are giving the data about storage capacity of a battery. For Ex. 12V 7AH Battery will run 7 hours if you are driving the load of 1Amp continuously. But 12 12AH Battery will run 12 hours if you are driving the load of 1Amp continuously.

Why pager has better battery life?

Because a pager is just a radio receiver and not a radio transmitter. A cell phone or a cordless phone are both a receiver and a transmitter. A receiver uses much less battery power than a transmitter does. And because a pager's disposable alkaline battery holds more power than a cell phone or cordless phone's rechargeable battery.

What is the amp hour of a 12 volt battery for 23 watts power for a time of 4 hours?

To calculate the amp-hour rating, first divide the power (23 watts) by the voltage (12 volts) to get the current in amps (1.92 A). Then, multiply the current by the time (4 hours) to get 7.68 amp-hours. Therefore, a 12-volt battery powering a 23-watt load for 4 hours would require a battery with a capacity of at least 7.68 amp-hours.

Will ice melt faster wrapped in plastic foil and aluminum foil and put it outside or if you put it inside?

The ice will melt faster if placed outside rather than inside, regardless of how it's wrapped, due to higher ambient temperatures. However, wrapping the ice in plastic foil and aluminum foil will provide some insulation to slow the melting process compared to leaving it unwrapped.

What is the most important part in channels of distribution?

Ensuring that the right products reach the right customers at the right time is the most crucial aspect of channels of distribution. This involves efficient logistics, effective communication, and strong relationships with intermediaries to maximize customer satisfaction and sales.

How much lithium in a lithium battery?

This will depend on both the type and size of the lithium battery. Also some lithium battery types actually contain metallic lithium sheets while others the lithium is only in the form of ions.

Does a 500mah battery charger charge a 4300mah 8.4 large battery?

Normally speaking, the output of a charger is stated in milliamps mA (ie 500mA) and the term mAh refers to the number of milliamps flowing for 1 hour.

So for example, a 1000mAh battery will need to be charged at 500mA for 2 hours to reach full charge.

In your case, I must assume that yours is a 500mA output charger and is suitable for charging an 8.4 volt battery. Theoretically at this current output, your charger will take about 9 hours to charge a 4300mAH battery. In practice the process is not 100% efficient so a 10 hour charge will probably be required.

Where does a battery get its energy?

Electricity, as you probably already know, is the flow of electrons through a conductive path like a wire. This path is called a circuit.

Batteries have three parts, an anode (-), a cathode (+), and the electrolyte. The cathode and anode (the positive and negative sides at either end of a traditional battery) are hooked up to an electrical circuit.

The chemical reactions in the battery causes a build up of electrons at the anode. This results in an electrical difference between the anode and the cathode. You can think of this difference as an unstable build-up of the electrons. The electrons wants to rearrange themselves to get rid of this difference. But they do this in a certain way. Electrons repel each other and try to go to a place with fewer electrons.

In a battery, the only place to go is to the cathode. But, the electrolyte keeps the electrons from going straight from the anode to the cathode within the battery. When the circuit is closed (a wire connects the cathode and the anode) the electrons will be able to get to the cathode. In the picture above, the electrons go through the wire, lighting the light bulb along the way. This is one way of describing how electrical potential causes electrons to flow through the circuit.

However, these electrochemical processes change the chemicals in anode and cathode to make them stop supplying electrons. So there is a limited amount of power available in a battery.

When you recharge a battery, you change the direction of the flow of electrons using another power source, such as solar panels. The electrochemical processes happen in reverse, and the anode and cathode are restored to their original state and can again provide full power.

Can you charge a 28 volt Gill aircraft battery with a 12 volt car charger?

No, you cannot charge a 28 volt aircraft battery with a 12 volt car charger. The charger voltage needs to match the battery voltage for safe and effective charging. Using a charger with a lower voltage can damage the battery and pose safety risks.

Does MA output on chargers for electronics matter?

Yes, the output current (measured in mA or Amps) on chargers for electronics matters, as it determines how quickly the device can be charged. Higher output currents typically result in faster charging times, but it's important to ensure that the device being charged can handle the higher current to prevent damage.

What is the voltage of the charger for swiffer sweeper vac?

Look on the label of the product itself, I have seen 6 Volts and 7.2 Volts on Swiffers, the label will tell you for sure.

For example my unit needs a 1-SG1700-000 adapter, which is a 7.2 volts DC with positive polarity on the plug. You can use a multipurpose adapter that you can set the voltage yourself and set the polarity as well. They go for about $5-$10 in most electronic stores, even in many department stores.

How does storing batteries in the refrigerator help?

Storing batteries in the refrigerator can help slow down the chemical reactions that occur in the battery, which can help extend their shelf life. However, it is important to avoid condensation and allow the batteries to come to room temperature before using them to prevent potential damage.