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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

Where do chemical reactions occur in electrochemical cells?

Chemical reactions occur at the electrodes of electrochemical cells. At the anode, oxidation occurs as electrons are released into the circuit, and at the cathode, reduction occurs as electrons are accepted from the circuit. This flow of electrons creates an electric current in the cell.

What is function of battery?

It stores electrical energy charge which then provides power to the circuit. Electricity is the stream of electrons through a conductive way like a wire. This way is known as a circuit.

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

Can you recharge a 3V battery with 12V charger?

It is not recommended to recharge a 3V battery with a 12V charger as this may damage the battery. The voltage of the charger should match the voltage of the battery to avoid overcharging and potential safety hazards. It is best to use a charger specifically designed for the 3V battery.

Can a 350mA charger be exchanged for a 800mA battery charger?

Yes, a 800mA charger can be used in place of a 350 mA charger. The number represents the maximum amount of current that the charger is designed to produce. The main thing to look for is that the output voltages are the same rating in both chargers.

How do the chemicals in a battery make the battery work?

Oxidation and reduction reactions generate a flow of electrons (electricity).
For example a lithium-nickel battery:
Li+ + e- ---> Li
Ni2+ + 2e- ----> Ni
Each reaction produces a certain number of volts. Whichever reaction produces the greatest number of volts will go in the direction (forwards or backwards) that produces that number of volts. The other reaction will go in the opposite direction so as to replenish electrons and keep the movement of electrons flowing between the two cells.

What happens to emf as a battery is used?

As a battery is used, its electromotive force (emf) decreases due to various factors such as internal resistance, chemical reactions, and depletion of the chemical components that generate the emf. This leads to a reduction in the voltage output of the battery over time as it discharges.

How does a rechargeable battery work and what are the cathode and anode equations for this battery?

A rechargeable battery (also known as a storage battery) is a group of one or more electrochemical cells. They are known as secondary cells because their electrochemical reactions are electrically reversible. Rechargeable batteries come in many different sizes and use different combination of chemicals; common types include: lead acid, nickel cadmium (NiCd), nickel metal hydride (NiMH), lithium ion (Li-ion), and lithium ion polymer (Li-ion polymer).

Rechargeable batteries can offer economic and environmental benefits compared to disposable batteries. Some rechargeable battery types are available in the same sizes as disposable types. While the rechargeable cells have a higher initial cost, rechargeable batteries can be recharged many times. Proper selection of a rechargeable battery system can reduce toxic materials sent to landfills compared to an equivalent series of disposable batteries.[dubious - discuss] For example, battery manufacturers of NiMH rechargeable batteries claim a service life of 100-1000 charge cycles for their batteries.

What will happen if you attach a wire from the bulb to a D-Cell battery?

If you attach a wire from a bulb to a D-cell battery, the circuit will be completed and the bulb will light up as the electrical current flows through the wire, energizing the filament in the bulb. Be cautious as the bulb may get hot, and make sure to handle the setup carefully to avoid any electrical hazards.

Can you charge a 6 volt battery from a 12 volt source?

The simple answer is NO. Why not use a simple 6 volt power suppy from some junked piece of audio or telephone equipment, Just watch the polatiy when you make your connections.

Using 12V on a 6V battery can fry your battery but not the otherway around.

Is a battery ferromagnetic?

It depends completely on what it's made of. Some would be, and some wouldn't. I can't say off the top of my head, but the best way to find out is to see if a magnet (you probably have one lying around your home) will stick to it.

What is the black stuff in the center of a battery?

i have been told that it it magnesium Oxide, but that's white not black so i dont know. i really need to but :L

Why are battery chickens called battery chickens?

They are called battery chickens because they have been reared and kept in cages - normally a battery farm will consist of row after row of small cages which hardly give the hens room to move but do leave them enough room to eat and lay eggs.

Why is it called a battery? Well, a 'battery of something' can be used as a way to describe a large number of that something all in one place.. . as in artillery battery, an organized group of artillery pieces, or in chess, where a battery is a tactic consisting of placing two or more pieces on the same rank, file, or diagonal.

In the case of battery hens, they've been kept in one of a battery of cages.

What are harmful elements found in the battery?

Harmful elements found in batteries include lead, cadmium, mercury, and lithium. These elements can be toxic to humans and the environment if batteries are not disposed of properly. Recycling batteries is important to minimize the impact of these harmful elements on the environment.

What minerals are in a car battery anode?

Common minerals found in a car battery anode include lead dioxide and lead sulfate. Lead dioxide is typically used in the positive plate of the anode, while lead sulfate forms on the negative plate during the discharge process.

Why should batteries be recycled?

Batteries should be recycled because they contain metals like lead, cadmium, and mercury that can be harmful to the environment if disposed of improperly. Recycling batteries helps prevent groundwater and soil contamination, reduces the need for raw materials, and conserves energy.

What are battery testers?

A battery analyzer is an electronic gadget proposed for testing the condition of an electric battery, going from a straightforward gadget for testing the charge really display in the cells and/or its voltage yield, to a more far reaching testing of the battery's condition, in particular its ability for gathering charge and any conceivable defects influencing the battery's execution and security.

What is ideal battery?

An ideal battery would have high energy density, fast charging capabilities, a long lifespan, and be safe and environmentally friendly. It would also be cost-effective and easily scalable for various applications.

Are AAA batteries stronger or D batteries stronger?

With the same load current the AA will last longer that the AAA. This is due to the physical size of the cells. A C cell will last longer that a AA and a D cell will last longer that a C cell. In dry cells as the cells get larger the amp/hours increase.

Why are batteries cylindrical?

Cylindrical shapes are efficient for housing the components of a battery, like electrodes and electrolytes, in a compact space. Additionally, cylindrical shapes provide structural stability and prevent leakage of the battery contents. This shape also allows for easy stacking and packing of batteries in electronic devices.

Is a D battery the same as LR20?

Yes, a D battery is the same as an LR20 battery. LR20 is the International Electrotechnical Commission (IEC) designation for a D battery, which is a common size of battery used in various electronic devices.

What is the voltage of energizer lithium batteries?

Energizer (and many other battery companies) sell two kinds of "lithium" batteries:

"Lithium Photo/Coin", Li-Mn, "CR" button cells, such as the CR2032, provide about 3 V.

"Lithium cylindrical", "Lithium-iron", "Li/Fe", which comes in AA and AAA, are about 1.5 V, and also comes as those rectangular 9V batteries, which... of course... are about 9V.

What is the purpose of a lemon?

Lemons are typically used for their acidic and tart flavor, which can enhance the taste of many dishes and beverages. They are also rich in vitamin C and antioxidants, making them a healthy addition to the diet. Additionally, lemon juice can be used as a natural cleaning agent due to its antibacterial properties.

What are the ingredients in a battery?

this factor depend upon the type of battery there are several type of batteries which are lead acid, Nickel Cadmium , Lithium Ion, etc for example the contains of lead acid battery is- Lead (Pb) and Acid basically H2so4 with water H2o and plates are made of Pb lead a

Do you have a diagram on 9volt battery and light bulb?

Draw a battery and light bulb. Draw a line from the smaller connector on the battery

to the bottom of the light bulb, this is positive on both.

Draw a line from the bigger connector on the battery to the side of the light bulb,'this is the negative of both.

Looked all over and can't seem to find this one.

How do you get a battery out of a phone?

on the bottom of the laptop, unless its built in

*On MacBook's it's on the bottom right... You'll need a coin to twist the lock, the battery will pop right out. The serial number is also hidden under the battery.