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Batteries - MP3-Player Accessories

Batteries?

Written by Darkness in Saturday, January 19, 2008 under Other - Science
Comments: 1

Q: What exactly is the white powdery residue that is on expired batteries when left in the battery chamber for too long?

A: That depends on the battery chemistry. It usually happens because the chemical reactions have finally eaten away all of the outer electrode at some point, letting the paste (acid or alkaline) leak out and corrode anything it touches.

Comments: 1

mygif
realme Said in Saturday, January 19, 2008

lead sulfate from corrosion

what are the best batteries for a digital camera?

Written by jurassicboy16 | Tuesday, April 10, 2007

I've tried duracell and energizer, and they both don't work for long. Digital cameras are indeed huge battery hogs. I even purchased rechargable batteries, and a energizer recharger for the batteries, and the batteries only last for 3 to 5 minutes, and then die. I just wanted to know what the best batteries for digital cameras are.
I own a Samsung s630 6.0 mega pixels digital camera if that helps anything.


A: Digital cameras do, indeed, draw enormous amounts of power.

The LCD screen without doubt is the biggest user of electricity. If your camera has a viewfinder that you can peep through instead of using the battery hog LCD screen, use it and get hours of extra use from your camera.

Reduce amount of time that the LCD stays on in "review" mode after taking a picture. A few seconds is all that should be needed. I recommend turning it off completely! Don't...

Can massive feedback cause the batteries in a wireless microphone to stop working?

Written by Poochieattack | Sunday, May 10, 2009

Recently I was doing a show for my school and massive feedback occurred. Next thing you know the mic stopped working because the batteries didn't work. The batteries were brand new at the beginning of the show. The broken batteries were replaced, and the mic worked again. All other mics worked fine with the new batteries till the end of the show.

My question is, could the feedback have anything to do with the mic not working/batteries being dead.


A: Yes, most certainly.

In normal use, with no sound into the microphone, the current drawn from the battery is quite low.

With sound into the microphone the current increases.

I both cases the internal circuit is simply an amplifier driving a very low powered transmitter.

When acoustic feedback occurs, the microphone is part of an oscillatory loop and the current taken from the battery increases dramatically.

How long should batteries last in a Cannon 590is?

Written by curlycuejoyce | Wednesday, June 11, 2008

I bought a Cannon 590is and am having a lousy time because of the battery life. Even with new alkaline batteries, they don't last to long. I returned the camera until I find out if this a common problem, and if a set of NiMH batteries will do the trick. Has any else had this problem? What woud be the best batteries to use? Thanks, curlycuejoyce.


A: Alkaline batteries are the worst type of battery to use because they don't hold enough charge to run a power hungry device such as a digital camera, for very long. Use them and you're just throwing money down the drain (or adding to landfill).

Ni-MH recharegeable batteries are much more cost effective. You charge them, they drain...so you just recharge them again. Buying high capacity Ni-MH are best (something like 2500-2700mAh).

They will need to be...

Why Laptop Computer Batteries Explode

Laptop computers are everywhere these days. You can’t sit in a coffee shop or travel on a plane without seeing at least a couple people typing away on their laptops.BatteryBattery

The overwhelming popularity of laptop computers and the demands of consumers have driven innovation and development in the technology for both laptops and the batteries that power them.

Laptop batteries are smaller, lighter, and last longer than ever before. They are also safer. Older types of nickel-based batteries can explode if overcharged. New lithium-ion batteries do not run this risk.

Laptop ComputerBatteries Recalled If lithium-ion batteries are safer, why have we seen so many batery recalls in the news in the past few years? First of all, it’s likely that manufacturers are simply taking a conservative approach to managing potential safety issues. Even a relatively low failure rate has caused a recall of millions of laptop computer batteries.

To preserve consumer safety and build confidence in their products, manufacturers often choose to recall their batteries rather than leave a questionable product on the market. As consumers, we should be genuinely reassured by this vigilance on the part of manufacturers. It assures us that they are also taking measures to improve manufacturing methods and the overall safety of the batteries to avoid recalls in the future.Laptop Battery HP Pavilion ZD8000

Laptop Battery HP Pavilion ZD8000

The Makeup of Laptop Computer Batteries Ultimately, though, lithium-ion batteries are compact containers for a great deal of energy. As batteries become more powerful to meet consumers’ demands, the extra stored energy can cause them to become potentially more dangerous.

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