The Capacity of Laptop Batteries Explained by Mansi Aggarwal
Laptop batteries are rated by, Voltage (V) and Milliamp-hours (mAh). Voltage is the rate at which energy is drawn from the battery and Milliamp-hours Represents the capacity of the battery. The Milliamp-hour rating Corresponds to the run time of the battery. ... A battery with a high Milliamp-hour rating has a relatively longer run time than a battery with a Low Milliamp-hour rating. ... The life of a battery under normal use is around 500 to 900 charge-discharge cycles. ... Using devices like a wireless adapter on the laptop also drains the battery considerably.

iPod Battery Capacity by Dan Hagopian
In my last article about the 24 Hour iPod Battery we discussed the true capability of such an iPod battery. Now however, I wanted to speak directly about the primary limitations of current battery technology that makes it difficult to truly get an iPod battery to last 24 hours given the... All iPod batteries including the (iPod 3rd Gen Battery, iPod Mini Battery, iPod Nano, Battery, iPod Video Battery, iPod Photo Battery, iPod 4th Gen Battery, iPod Shuffle, and iPod Classic Battery) have all been specifically designed for a battery rating that will perform a single function – to power...

About Batteries by Matthew Archer
Batteries are all over the place -- in our cars, our PCs, laptops, portable MP3 players and cell phones. A battery is essentially a can full of chemicals that produce electrons. Chemical reactions that produce electrons are called electrochemical reactions. ... For one thing, all batteries have a maximum current they can produce -- a 500 milliamp-hour battery cannot produce 30,000 milliamps for 1 second, because there is no way for the battery's chemical reactions to happen that quickly. ... Also, many battery chemistries have longer or shorter than expected lives at very low current levels.

Types of Batteries by Jeff Anderson
Are you confused by the terms thrown around on batteries.such as Magnesium or Zinc-Carbon? We will walk you through a brief definition of each type of Alkalinee Batteries. Types of alkaline non-rechargeable batteries include: Zinc-Carbon. Zinc-carbon cells, also known as "Leclanché" cells, were... Rated at 1.5 volts per cell, they are available in the common AAA, AA, C, D and 9-volt sizes. ... Zinc-Chloride: Heavy-duty zinc chloride batteries (ZnCl2) are the result of technological advances in zinc carbon battery manufacturing.

Understanding Computer Laptop Batteries by George Royal
Types of Laptop Batteries: Nickel Cadmium (NiCd) Batteries: These were the first rechargeable batteries manufactured for laptops. They were relatively inexpensive, had high output and versatile, because they could be used in a wide variety of products. ... Battery Cycle: One battery cycle is used every time a battery is charged or discharged. ... Technically speaking, it is defined as the number of cycles a battery can perform before its nominal capacity falls below 80% of its initial rated capacity.

Significantly Reduce Your Battery Costs With Lithium Ion Batteries by Tim Gorman
Lithium ion batteries are a great thing to buy if you want to cut your battery costs. They are not a new invention, they were first made in 1912. there are a huge amount to different batteries available from the smallest ones to some really big industrial type. ... This can be a problem for where the battery is not used that often but is can be important when it is needed for emergencies such as power outages. ... As the battery does not store well over extended amounts of time, it is possible that when they are needed they will not be usable.

Buying Digital Camera Batteries by Steve Gargin
A digital camera battery is probably the most important digital camera accessory. Some digital cameras can consume power at an alarming rate, providing no more than a few hours of continuous shooting time before the battery is drained. Other cameras are renowned for the long life of their... The other type of digital camera battery is a rechargeable battery that is made by the manufacturer, otherwise known as a proprietary battery. ... The most widely available digital camera battery is a standard AA-size battery.

Laptop Batteries 101 - A Buyer's Guide by Samantha Spiegla
If you are among the increasing number of mobile executives who are switching from PCs to laptops, it is inevitable that you will soon face a situation where you will need to educate yourself about laptop batteries. And then, at some point, buy them. ... (Of course, there are variations according to manufacturer and model of the universal laptop battery.) When do I need a new battery?: You do not necessarily need a new battery only after the current one is completely used up. ... A universal battery is just a larger version of the standard laptop battery, and can power virtually any laptop.

Compare MP3 Players for the Coolest Features and Sweetest Deals by W R Kirk
How can you compare mp3 players to be sure you're getting the best features and price? You've checked some mp3 player ratings, and they're helpful. But iPod reviews and ratings don't answer all your questions. So how do you decide? Here's a great little checklist for your player comparison. ... Battery (Rating ____) Built-in rechargeable (some replaceable, some not), or standard replaceable (typically AAA). ... Some players require battery recharge or replacement after 10 hours or less, while others may get 40-50 hours continuous play time.

Dissecting A Smart Battery – Part 2 by Dan Hagopian
In part 1 of Dissecting A Smart Battery I mentioned that smart batteries have contained within them specialized hardware that when working in concert provides the power necessary to run a device such as a PDA, digital camera, or ipod player. Continuing the dissection of a smart battery this... The Smart Battery’s Cell Pack The battery cell can be thought of as the holding area of the battery’s chemical. ... Besides temperature ratings other important factors when selecting the proper fuse to work with each smart battery is hold current, trip current, maximum battery voltage, and fuse size.