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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

Why does a battery corrode?

Batteries, specifically wet cell batteries, mostly corrode due to leaks in their casings. These leaks allow the material inside the battery to seep out and contaminate the battery's metallic casing. This leaked material acts as a catalyst for the oxidation of the metallic casing of the battery, otherwise known as corrosion.

What is a Naval Battery?

A naval battery refers to a group of heavy guns or artillery pieces placed on a warship or near a coast to defend against naval attacks. These batteries provide firepower to protect the ship or the surrounding area from enemy vessels or threats. They are a key component of naval warfare strategies.

What substance is reduced in a lead-acid storage battery?

Lead dioxide on the positive electrode is reduced to lead sulfate during discharge in a lead-acid storage battery.

How many AA batteries make a pound?

It would take about 30 AA batteries to make a pound. Each AA battery typically weighs around 0.8 ounces, so you would need 16 batteries to equal one pound.

A battery charger uses 15 watts At 6 cents per kilowatt-hour how much does it cost to charge batteries for 24 hours?

Let us consider that Watts means Watt-hours per hour. So a battery charger that consumes 15 Watt-hours per hour will consume 15x24 Watt-hours per day. And at 0.06 dollars per 1000 Watt-hours the cost will be 15x24x0.06/1000 or just over two pennies per day.

Will a 3.6V battery replace a 3.7V battery on cameras?

It is not recommended to replace a 3.7V battery with a 3.6V battery in a camera as the slight difference in voltage may affect the camera's performance and potentially cause damage. It is best to use the battery specified by the manufacturer to ensure proper functioning and safety of the camera.

Can you eat a battery?

No, you should not eat a battery as it can be toxic and harmful to your health. Batteries contain chemicals that can cause serious health issues if ingested. If you suspect someone has ingested a battery, seek medical help immediately.

How does a battery charger charge a battery?

what kind of batteries do you have??

if the mobile phone's battery, just put in your phone. If it's car battery, just connect the red cable to positive, black cable to negative plates.

on rechargeable alkaline type batteries the charger should have a plus and negative sign on it. usually the neg end is the one with the spring. the flat end of the battery is usually negative.

What does a battery cell do?

Theoretically, a battery consists of two or more cells, but in practice most people call a single cell a battery.

A cell is a physical unit that produces a specific voltage, for NiCd it is ~1.2 volts, for lead acid, it is ~2.1 volts.

A battery can be made of a single cell, or multiple cells. In the case of a 9 volt battery, there are typically 6 cells in series to produce the 9 volts (1.5 volts x 6).

AnswerA cell is a single source of electricity produced by a chemical action in the cell. A battery is simply a combination of cells connected electrically.


Fuel cells and batteries are similar because they use a chemical reaction to provide electricity. A battery stores the chemical reactants, usually metal compounds like lithium, zinc or manganese. Once used up, you must recharge or throw away the battery. A fuel cell actually creates electricity through reactants (hydrogen and oxygen) stored externally. The fuel cell will produce electricity as long as it has a fuel supply. In short, a fuel cell vehicle is refueled instead of recharged.

Where is the battery xc90?

The Battery is mounted in the boot (trunk) of this vehicle.

To access you need to go into the boot, lift the rear cover off (from the floor)

You should see the battery sitting in the middle of the rear (with a black plastic cover)

N.B. you can jump start this vehicle from the engine bay - where a positive feed (marked in red) is located by the front fuse board.

What is a central battery?

A central battery system is a setup where all the emergency lights in a building are powered from a central source, usually a bank of batteries. This design allows for easier maintenance and testing of emergency lighting systems.

Why don't we get most of our electricity from batteries?

Batteries store electricity but they do not generate it. Most of our electricity comes from power plants that convert various energy sources (such as coal, natural gas, nuclear, or renewable sources like solar and wind) into electrical energy. Batteries are typically used for storing and supplying smaller amounts of electricity or for backup power in case of outages.

What does a bad cell in a battery cause?

A bad cell in a battery can cause reduced overall battery capacity, shorter battery life, and potential overheating or safety issues. It can also lead to uneven charging and discharging of the battery, which can affect the performance of the device powered by the battery.

Why do you prefer NiMH batteries?

There are several advantages of NiMH batteries compared to ordinary alkaline batteries:

1. They can be recharged hundreds of time. So a single NiMH battery can literally replace hundreds of alkaline batteries over its lifetime. This saves money, results in fewer batteries being discarded, and uses fewer resources.

2. The voltage of NiMH batteries is relatively constant with use. The voltage of alkaline batteries decreases as the battery is used. For example a flashlight dims with use when using alkalines. But with NiMH batteries, it will stay bright until the batteries are exhausted.

3. Due to the low internal resistance of NiMH batteries, the voltage does not drop nearly as much under a load as alkaline batteries.

4. Also because of the low internal resistance, the capacity of a NiMH battery does not drop very much under heavy loads. This is why you can typically get many more shots with a digital camera if you use NiMH batteries rather than alkaline batteries.

5. NiMH batteries can deliver a much heavier current. Some devices, such as high power flashlights, cannot run (or cannot run for long) on alkaline batteries (at least on the highest settings). NiMH batteries are required to make the most of these devices.

6. Alkaline batteries may leak when they get old and/or are discharged too quickly. This can destroy whatever device they are used in.

What is a 3 volt battery?

A 3 volt battery is a type of battery that produces a voltage of 3 volts. It is commonly used in various electronic devices such as remote controls, toys, and small gadgets. The most common types of 3 volt batteries are coin cell batteries and AAA or AA batteries.

Is a flat battery a conductor of electricity?

well, yes. It conducts electricity from one lead to the other. Shape has no effect on the battery other than how its made.

So you must be thinking of a simple battery cell process, otherwise this would be a silly question. In a simple battery cell, even if your battery was as thin as a piece of paper it would still work but just with very little electricity. So it would have to be as thin as a shadow, meaning two dimensional instead of three dimensional to not conduct electricity.

How do coin batteries work?

You take copper(like a penny), Zinc (like a Nail). Then u stick them in a potato and touch either the negative or positive end to either one and it should power what ever you need to power.
you take a patato put a zink nail in it then put a penny in it put bolth leads on a light or something it will power it butyou might have to have a huge patato

What are the advantages and disadvantages of obtaining electricity from cells and batteries?

I assume you mean "Photovoltaic cell." If so, here they are:

Advantages: No environmental impact and is a renewable energy source.

Disadvantages: Currently very expensive, very innefficient (only collects 30% of the potential energy), and unreliable (if a cloud covers the sun, no more energy is being collected).

Also, remember, I am just a random person on the internet stating my views, so be sure to check out all of my information, making sure that it is correct, before using it in a paper or something :-)

- ElectroGoofy

How do you light a light bulb with a six volt battery?

You'll need two pieces of wire... and im pretty sure that if you take one end of the wire and put it on the very bottom of the light bulb and the other end of the wire and put it on the positive side of the battery, and take the other wire and put it on the threads of the light bulb and the other end of the wire and put that end on the negative side of the battery, you should get light. (I may have the polarities [positive & negative] mixed up).

What is the density of a battery?

The density of a battery can vary depending on its chemistry and design, but typical values range from 1.3 to 2.0 grams per cubic centimeter.

What is Battery acid on the pH scale?

Battery acid typically has a pH level below 1, making it extremely acidic. It can be very corrosive and dangerous if not handled properly.

What type water is used in inverter battery?

Distilled water is commonly used in inverter batteries to top up electrolyte levels. This helps prevent impurities and mineral build-up that could affect battery performance and longevity. It is important to only use distilled water to avoid contamination.

Battery ac or DC?

Batteries can provide both AC (alternating current) or DC (direct current) power, depending on the type of device they are connected to. However, most batteries themselves supply DC power. Devices that require AC power typically use an inverter to convert the battery's DC power into AC power.