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For a photographer, there is little worse than the bad feeling that you've just missed a fantastic shot because the digital camera battery went dead. It is necessary to bring another replacement battery with you if you are planning to take a lot of photos. There are many reviews and articles telling us how to choose a decent digital camera, however, few of them tell us how to pick a replacement battery methodically and clearly. Now, let's face the important question, how can we find a good battery replacement for our digital cameras?

In this article, I will show you:

1. Batteries Classification.

2. How to choose batteries

3. Battery maintains.

We must know batteries first before we choose one. There are 3 kinds of digital camera batteries that we often use, including: alkaline battery, Ni-MH battery and lithium-ion battery.

1.Alkaline battery

Alkaline battery is the most common battery in our daily life. There are many brands of alkaline batteries we can find, like Duracell, Energizer, Sony, Samsung, Maxell, etc. Unlike rechargeable batteries, alkaline batteries are not able to circulation use. Once it is drained, you have no option but throw it away.

Advantage: Easy to buy, Cheap (only for who need it temporarily,) and more choice of brands.

Disadvantage: Irrechargeable, Cost too much if often use. Low energy conversion efficiency.

2. Ni-MH battery

Ni-MH battery is a kind of rechargeable battery. You can find it in retail stores in size AA. As the same as alkaline batteries, Ni-MH batteries are not expensive, either, and the voltage and performance is similar to standard alkaline batteries in those sizes. You may pay more money than alkaline batteries when purchasing Ni-MH batteries, however, the ability to recharge 1000 times can save a lot of money.

Advantage: Rechargeable, Great compatibility

Disadvantage: Its durability is less than alkaline battery that has the same specification. Cost too much if use only once. The Memory effect will causes them to hold less and less charge.

3. Lithium-ion battery

Lithium-ion battery (sometimes abbreviated Li-ion batteries) is also rechargeable. Nowadays, most digital cameras use Lithium-ion battery as power supply. It is lighter and more powerful than alkaline battery and Ni-MH battery. Lithium-ion batteries do not suffer from the memory effect. They also have a low self-discharge rate of approximately 5% per month. (which is 30% for Ni-MH battery).

Advantage: Rechargeable, Less weight, Great energy

Disadvantage: Expensive. Its life span is dependent on the number of charge/discharge cycles and the age from being manufactured. It is not so safe as other batteries in some situation.

How to choose batteries.

For AA battery digital camera users, if you need batteries temporarily, choose alkaline battery instead. It is cheap and good enough, you can find it in every retail stores. For those regular users of AA battery digital camera, you should choose Ni-MH rechargeable battery. Though it will cost more than purchasing alkaline battery, its ability to recharge will save you a lot of money.

Many people will neglect the voltage of the battery when they plan to buy batteries. Take the two batteries into example.

Battery A: 3.6 V * 1200 mA

Battery B: 7.2 V * 1000 mA

Most people will chose battery A, but I suggest you the battery B, even though 1200 mA is higher than 1000 mA, the voltage of battery B is twice higher than the voltage of battery A. Ignore the electricity resistance,

P (power)=U (voltage)*I (current)

The power of battery B is much higher than battery A.

If your digital camera uses lithium-ion battery, the easiest way is to buy another original battery pack from the manufacture. Despite it is expensive, the quality is guaranteed and it will be full compatible with your digital camera.

You can also find many OEM manufactures that supply cheap batteries. Take the www.digital-camera-batteries.us [http://www.digital-camera-batteries.us/] and www.canon-digital-camera-battery.co.uk for instance, you can find many replacement batteries for digital cameras.

Battery Maintains

1. For alkaline batteries, remember to take them out of the digital camera after using, the alkaline liquid will damage the camera if let it out.

2. For Ni-MH batteries, fully charge/discharge battery up to 3 cycles before achieving full capacity of a new battery. Fully discharge and then fully charge the battery every two to three weeks for battery conditions. Run the device under the battery's power until it shuts down or until you get a low battery warning. This will help you reduce the memory effect greatly.

3. For Lithium-ion battery, DO NOT discharge it, it doesn't have memory effect, it will damage the battery to discharge it.

4. Remove from the device and stored in a cool, dry, clean place if the battery will not be in use for a month or longer,

Using this article, it will help you choose and maintenance your digital camera battery easily. You can have my word.

Maxell Watch Batteries

Keeping time in today's economy is something of a fashion statement rather than a utilitarian desire to actually tell the time as accurately as possible. Many companies have come into the picture and painted their own interpretation of how time should be displayed with a deft hand a creative mind. The watch industry is a burgeoning one and it cannot be denies its existence as a giant in the market of fashion. Keeping these timepieces going can be quite a challenge in this day and age as with more advanced features being added on, battery life gets compromised somewhat.

Sure, we are not talking about the extremely expensive watches that promise a battery life measured in generations, we are talking about the normal mid range and slightly high end watches that most people are pleased to buy and display on their wrists. The battery sits right behind the watch, and can sometimes be seen as either one or two button cell batteries, each with aa rating of a maximum of 3V and able to power the watch for a couple of years at least. But of course, nothing always goes according to plan and no matter how technologically superior the watch is, there will always be a time when the battery will be at fault. Now, there are several reasons why this can happen and most of the time, it is due to faulty engineering of the battery itself.

Old and used batteries sometimes find their way into the new watches and because of their flawed design, they have leaks and power drains faster than normal. Or it could be a result to over exposure to the elements, which include the rain, the sun, and even exposure to chemicals and radiation from other sources. You could short out the battery in your watch pretty easily and you need to be careful. You can replace the battery yourself, but it is not a good idea for you to do so, because it is a delicate piece of machinery that you are dealing with. Go to a watch smith and if you can, request for a Maxell watch battery; these are some of the more reliable and effective batteries out there that you can depend on to replace the factory stock batteries and keep your watch going.

You can also purchase these batteries at any hardware store or even any supermarket that is within your area. Be careful when buying because you need to know the exact rating to get and the material that your watch has been designed to take. Getting the wrong ones could result in you destroying your watch or burning out the interior mechanisms of the watch, so you have to be careful with what you are doing. Also, these cells like the Maxell watch batteries also have many other applications that can be used in small electronic gadgets and even small devices like hearing aids. These are just some of the things you may need to know about watch batteries and their uses.

About the Author

Arden Marketing Pte Ltd is a wholesaler of
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How do I charge my Pocket PC's Backup Battery?

I have a Dell Axim X5 Pocket PC. I keep getting a message that says "Backup Battery Very Low -- To prevent possible data loss, replace or recharge your battery according to the owner's manual." When I check my Power it says that my Backup battery is at 0%. I'm not certain how that happened. But, I would like to charge it if possible. I checked my Dell Axim X5 User's Guide and other papers I got with it and it only tells me how to charge the Main Battery and not the backup battery. Is it possible to charge it or do I have to buy another? The words on the backup battery read as: maxell CR2032 3V Hitachi Maxell, Ltd. Japan. I've tried just plugging in the PC like I would to charge the main battery but, the backup battery won't charge at all like that. Any suggestions? Thanks in advance!

The backup battery on my Axim X30 charges on its own when the main battery charges. I would suggest getting a new backup battery. The 2032 is a common battery found at any department store. Look in the Photo Lab or Electronics depts.

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