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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 the batteries go in a polaroid camera?
As I remember, you don't. The batteries are built into the film pack. Try going to the Polaroid website for more instructions.
What battery goes in a fossil blue watch?
I have a Fossil Blue BQ-8774. To remove the watch back cover, I unscrewed the entire cover. There are notches in the back cover, and I used a small screwdriver in one of the notches and tapped it repeatedly, opening the back cover in a counter-clockwise direction. The battery inside was a 373, also known as SR916SW.
Does a 7200mAh battery last longer than 4400mAh?
mAh stands for milliamp hours and is a partial measure of the energy that can be stored in a battery. It is the standard used for rechargeable batteries but rarely used for non-rechargeable batteries.
The rating is only a partial measure because the voltage affects the total energy stored. For a given mAh rating, the higher the voltage of the battery, the more energy can be stored.
For two batteries that deliver the same voltage, a 7200mAh battery will store more energy than a 4400mAh one. Therefore, the 7200mAh battery should last longer.
There are other factors that affect how long a battery can last. The type of load can have a significant effect on the battery life and the condition of the battery itself.
Give an example of a dry cell battery and a wet cell battery?
a lemon cell or a vinegar cell are simple one cell wet cell batteries you can male at home. for either you will need a piece of copper foil and a piece of zinc foil to use for the two plates.
lemon cell
- slice lemon in half
- in one half of the lemon insert the copper & zinc foil plates so they don't touch
vinegar cell
- pour vinegar into a small beaker or glass
- hang the copper & zinc foil plates the edge of the beaker or glass so they are in the vinegar but do not touch
try some other liquids in a beaker or glass like the was used for the vinegar cell. the ones that make operating electric cells are called electrolytes. some suggestions are:
- baking soda solution
- salt solution
- sugar solution
- orange juice
- liquid detergent
- hot water
- ice water
- cola
- etc.
if you are using the same beaker/glass and/or plates with different liquids, be sure to wash, rinse, and dry them between experiments.
How do you get power from a battery?
chemicals present (electrolyte and electrodes) in battery react each other to provide chemical energy to battery further which is converted in electric energy.
Vba Pokemon emerald the internal battery has run dry. how do i fix that?
First you need these materials:
glue
replacement battery (Check your battery and make sure you get the same type because you know it will fit and will work properly)
tiny flat head screw driver
Step 1: first use the tiny flat head to unscrew the little screw on the back. Make sure you put enough pressure down that the screw turns with it. If you just turn the tiny flat head and the screw does not turn with it, it will eat the metal away of the inside of the screw, making it impossible to take the screw out and the battery too!
Step 2: do not pop it open, slide it open
Step 3: you will see a metal piece over the battery, bend it open as much you can with the tiny flat head without breaking it
Step 4: Use the tiny flat head to snap the little 4 prongs under the metal piece, then the other 4 on the bottom, make sure you don't scratch the bottom up!
Step 5: take battery out and put new one in negative (-) charged side on top
Step 6: rebend the top metal piece back in place as best as you can
Step 7: put a little glue on top of the metal piece and battery and let it dry
Step 8: put cover back in
Step 9: screw the screw back in
Does AA batteries last longer than AAA batteries?
The main difference between a AAA and a D battery is the size. With the size, you can put more charge holding materials, such as Lithium-Ion, Ni-Cad, etc. They both have the same voltage output, but the D battery can hold more charge. Since electronic devices "pull" charge from the batteries, the D battery will last longer comparitively to a AAA battery in a similar device. This is why you see AAA batteries used in small devices, that have low current draw, and D batteries are used in items that require more power, such as boom boxes, and such.
The plastic case is cracked around the post allowing fumes to corrode the post. Buy some of those treated battery post washers and a can of battery terminal protector spray. Or, get a new battery.
Rick
I'm a retired ASE Master/L-1 Technician. I still keep current with the latest automotive technology. Visit my blog for cool articles and TSB's: http://free-auto-repair-advice.blogspot.com
What is the electrical term - battery capacity - mean?
Buckets are used to hold water, in order to transport it from place to place
and use it when and where it's needed. The "capacity" of a bucket is the
amount of water it can hold.
Paper bags can be used to hold apples, in order to transport them from one place
to another and use them when and where they're needed. The "capacity" of a
paper bag could be the number of apples it can hold.
Batteries are used to store energy, in order to transport it from place to place
and use it when and where it's needed. The "capacity" of a battery is the amount
of energy it can hold.
How can you tell if a battery still has power?
There are a couple of ways to look at a battery and give it a "test" to see how good it is. One is to measure the voltage, which is a static test. This in not the most definitive way to check out a battery, but it can give some indication as to how much energy is left in the battery. The "proper" voltage that a battery has will creep down as it is used, and then fall off quite dramatically near the end of its usefulness. For example, if you see a battery that should have 1.5 volts across it and it reads 1.1 volts, most of the energy in the battery has been drawn off. The second way to test a battery is the load test, which is a dynamic (and more "real") test. If we use a battery tester, which is simply a resistive load with a "scale" on it, we can get a better idea of how much energy remains in the battery. The little units basically look at how much the voltage "sags" or "drops" when we apply a load. The scale gives some indication as to the remaining energy reserve based on that test. The more the voltage drops when the battery is loaded and asked to deliver current, the less energy that remains in it.
How do you hook up two 12 volt batteries to get 12 volts?
Assuming both batteries are alike in voltage, and preferably current:
For twelve volts, connect the negative to the positive of the other. That will be a series connection, and then use the open negative and positive connections for 12 volt operation.
For 6 volts, but twice the power, connect the positive to the positive and the negative to negative, and use this combination for six volt operation but twice the available current.
NEVER, NEVER, NEVER connect two batteries together with one's positive to the other's negative and the negative to the other's positive. Results? BOOOM!!!!! (And I'm not joking.)
I turned off the AC panel, turned the key counterclockwise, set it back to off, then back to on and then it started back up. I took a few seconds in between each turn of the key. Hope this works
How many cells are in a D cell battery?
The`D' sized battery, `AA", `AAA` and `C' sized batteries are manufactured to have a nominal 1.5 volts.
Answer
The electromotive force (open-circuit voltage) produced by a cell is a function of the materials used in the manufacture of its electrodes, and has nothing whatsoever to do with it physical size.
The electrochemical series of metals lists the potentials of various metal electrodes in comparison with a hydrogen electrode, which serves as a zero reference. For example, the simplest cell has a copper electrode and a zinc electrode. From the electochemical series, the potential of copper is found to be +0.34 V, and the potential of zinc is found to be -0.76 V. So, the potential difference between a copper and zinc electrode will be 0.34 - (-0.76) = 1.1 V.
The physical size of a battery (e.g. AAA, AA, etc.), providing they are of the same type, is a measure of the cell's charge capacity (expressed in ampere hours) and not of its emf.
Why are rechargeable batteries only 1.2v?
The chemistry of the battery. Everything chemical has a certain electric potential. The battery voltage is the difference between these two potentials. The classical chemicals for batteries was carbon and zinc, which produce 1.5 V. Rechargables, which are based on nickel and cadmium or nickel and hydrogen, produce 1.2 V. The lead acid cells in your car battery, on the other hand, produce 2 V, and some lithium chemistries produce 3 V.
What is the difference in a CR2032 and a CR2035 Battery?
Yes you can. However, the 2025 is 0.5mm thinner so will be a slack fit. It is also down on capacity; a lowly 165mAh as opposed to the meaty 220mAh of the 2032. The real difference is that on a constant 15Kohm load drawing 190uA @ 200C, the CR2032 will last 1000 hours and the CR2025 800 hours.
How long do D size rayovac batteries last in a flashlight?
it depends on the battery and how much you use the flashlight
What is a rechargeable battery?
Yes.
Most ordinary "nonchargeable" batteries can very well be recharged a few times.
Most alkaline and lithium batteries can be recharged from 3 to 10 times.
Some lithium batteries even more.
I have actually not experimented with other "nonchargeable" batteries.
Problems:
The problem with recharging these types of batteries is that they are not designed to be recharged!
It should be done slowly over long time rather than very fast like most chargers today does.
You can not complain either if the batteries actually start leaking.
They might even "violently" crack open (Explode) if you try to charge them with a lot of current. This so called "explosion" is however not an actual explosion. Using the word "Explosion" causes un-needed fear. What actually may happen is that the pressure inside the battery increases during the charging process. the sealing of the battery may rupture and some of its content, acid or alkaline, may be forcefully sprayed out. This of which is harmfull to skin, espechially eyes. Slow recharging ensures low pressure and less chance of seal breaking.
My method and experiences.:
I recharge my Alkaline and Lithium AA Batteries over a time of approx 16 hours. My battery charger is adjustable and can deliver 25-200 mA. When recharging slowly with only 50mA, the batteries keep quite well and can be recharged a few times.
If recharging at 200 mA, they get warm (due to gas buildup and high pressure inside). This pressure causes batteries to crack open and leak. This mean that battery is forever dead.
As of not exactly knowing the capacity of a nonchargeable battery, it is a bit difficult to give a time frame for recharging. We can however somewhat count on a capacity comparable to similar rechargeable NiMh batteries. These batteries today are close to 2000 MAh. Easy math tells us that recharging such a battery at only 50 mAH takes time. Straight forward, 40 hours, but taken into consideration the loss factor of charging (approx 40%), it would take close to 60 hours to fully recharge.
If recharging at 100MAh this time would be halved to 30 Hours.
My experience though is that when I try to recharge a battery for that long, it will start to leak, almost no matter what. I never charge my alkaline batteries for more than approx 15-20 hours at 50-75 MAh. This will of course not give a full charge but the batteries can withstand it better than a full charge.
They last for ages afterwards in my mouse or keyboard.
Note:
My battery charger is full of corrosion due to battery-fluid from alkaline batteries.
This mainly because I forget the batteries in there for too long a time, or try to recharge too many times.
What is the proper battery cable connection when jumping two automotive batteries?
Hook up the jumper cables in this order: (1,2,3,4) (1) One end of positive cable to positive post of GOOD battery (2) Opposite end of positive cable to positive post of DEAD/LOW battery of disabled vehicle (3) One end of negative cable to negative post of GOOD battery (4) Opposite end of negative cable to GROUND on disabled vehicle (a good ground is preferred over the negative post, however, the cable can also be hooked to the the battery post). To remove the jumper cables after starting, reverse the order (4,3,2,1)
Flashing battery symbol while driving?
Could be that the alternator is not charging the battery properly
Check with a voltmeter
A fully charged battery should read around 12.8 without engine running
With engine running voltage should read around 13.8-14.2
The most likely cause is a broken alternator drive belt
What is the voltage of 4 AAA batteries?
The output voltage depends on how they're connected;
In parallel, the voltage supplied will be 1.5 V.
In series, the voltage supplied will be 6 V.
What happens when you connect two batteries of different voltages together?
If by capacities you mean voltages then they will add in series and have the voltage of the lower one in parallel. Putting them in parallel will generate alot of heat because the wire acts as resistor to allow the current to drop from the first battery to the second.
Where was the first battery made?
Count Alessandro Giuseppe Antonio Anastasio Volta (February 18, 1745 - March 5, 1827)
see link
Can a 1250 mAh battery replace a 1100 mAh battery?
Yes, provided all other factors are the same (shape, size & voltage rating). The rating mAh stands for "milli Ampere hours" and is a measure of electrical storage capacity. The 1250 mAh will last a little longer when fully charged.
How do you change batteries in an idog?
Here it is for you in 4 simple steps
1. There is a screw on the left hind leg below the stomach.
2. Use a Phillips screwdriver to remove the cover. (The screw stays in the cover, so you won't unscrew it completely.)
3. Take out the old batteries and put in 2 fresh AA's.
4. Replace the cover and re-tighten the screws.
And there you have it, your iDog will be back to it's normal self.
D cell battery cause electric shock?
No, as D cell battery does not have enough power to shock you.
*edit
D Cell batteries don't have enough VOLTAGE to shock you.
They have plenty of power (Power = Voltage*Current) to shock you, but first you'd have to use a circuit to increase their voltage to thousands of volts. This would decrease their current proportionally and keep the power level the same.
Car batteries for example have tremendous amounts of power, but it's in the form of massive amounts of current (number of electrons flowing), the Voltage (intensity of the electrons) is only 12 Volts, which is still safe.
