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Batteries for MP3 Players

Most people buy a portable audio player for its portability. Being free to take your music with you everywhere you go is one of the big attractions of MP3 players. This portability, of course, is dependent on battery life, so paying attention to battery specifications is a good idea when buying an MP3 player.

Most manufacturers rate the playing time of their MP3 players. This figure refers to the number of hours of continuous music playback that can be expected on a full battery charge. It can range considerably - from 10 hours up to 35 hours.

When looking at manufacturer's specifications, keep in mind that they are most likely at the high end and represent the playing time under ideal conditions. For example, if the manufacturer rates their MP3 player at 20 hours, this probably means 20 hours of continuous playing (stopping and starting the player uses more power), with no extra features like screen displays being used.

Certain audio formats use more power than others. The least processor intensive audio format is MP3 encoded at 128 bits per second. But if you have a lot of songs in WMA format with DRM (Digital Rights Management), they require considerably more processing power for playback, meaning correspondingly less battery time.

Other things that consume extra power include audio processing such as equalization, high-volume levels, photo display and videos. Video probably places a higher demand on battery power than any other MP3 player feature.

Hard drive audio players also tend to consume more p ower than flash memory audio players. This power consumption increases the more you use your hard drive. If you're constantly browsing your directories and looking at photos while listening to music, your battery will not last as long.

Rechargeable batteries are the best option for MP3 players. Not only are they better for the environment, they are also cheaper in the long run. Many MP3 players use lithium-ion batteries that are good for about 500 recharges before needing to be replaced. Players which use AA or AAA batteries can use Nickel Metal Hydride (Ni-MH) rechargeable batteries.

A battery charger is an essential part of any MP3 player kit. Although some players allow you to charge the battery by plugging it into the USB port of a computer, it is more convenient to have a stand-alone battery charger with an extra battery pack. This allows you to keep your MP3 player up and running at all times.

Of course, you don't have to power your MP3 player with batteries - it can be plugged into the wall with an AC adapter or draw power from the computer. Some people use their portable players as part of their home stereo system, so an AC adapter would be the perfect power source for this kind of situation.

Additionally, for those who like to listen to their MP3 player in the car, an adapter that draws power from the cigarette lighter is ideal.

Choosing an appropriate power source for your MP3 player is an important part of your purchase, so carefully consider how and where you are going to listen to music.

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