Integrated Power Management Circuits by Dan Hagopian
Discussing internal battery design would be incomplete if we did not write on the subject of integrated circuits. Batteries for PDAs, MP3s, Digital Cameras, and Laptops have designed within them integrated power management circuits that insure that the deliverance of reliable power is properly... Power management integrated circuits offer other key benefits as well including maximizing battery life between charges, minimize charging times, and improve battery life. ... A real example of a battery pack protector circuit is a Texas Instrument two-cell lithium-ion (Li-Ion) and lithium-polymer...

The Battery - Cathodes, Anodes, and Electrodes (Part 1 of 2)! by Dan Hagopian
A battery as we know it is a device that stores chemical energy and through an electrochemical process (electromotive force) converts the stored chemical energy into electric energy via a direct current voltage. The chemical conversion is a process of chemical change created by adding or losing... A battery cell is the most basic electrochemical unit and often time cells are stacked on top of one another to meet a specific energy design or need, however, when we are speaking of battery cells we refer to them as a battery whether there is one cell, three, or more in a series.

Selecting a Personal Digital Assistant by Deryck Richards
A Computer in Your Hand Carrying around an address book and planner is becoming a thing of the past. With new PDA developments, you can manage your contacts and schedule, use e-mail, and even listen to music. Personal Digital Assistants, originally called "Palm Pilots," previously were used... If you plan on taking digital photos, your main concern should be the quality of the digital camera and the screen. ... PDAs with a color screen tend to run through battery life faster. ... If you plan on using your PDA primarily for e-mail, get a PDA with a good keyboard and good battery life.

Sony MP3 Players by Brian Lupichuk
Sony Mp3 Players have earned the status of being one of the best players on the market. The Sony Mp3 Players are quite versatile for style, looks, and of course accessories. With the Sony mp3 players you can choose from either the Hard drive player, Flash Memory player, MP3 CD player, or the... Simply with combining a digital camera and an Mp3 Player. ... And always check to make sure the CD player or mp3 players meets you needs. ... The CD Walkman is reasonably priced for your budget, and it probably can hold all your audio music needs from you homemade CDs.

Samsung 30 GB MP3 Player by Brian Lupichuk
The Samsung 30GB MP3 Player is a relatively new mp3 player by Samsung to the market. But, this mp3 player will give the ipod a good run for the money. In a quick readers qlance it will hold up to 6000 songs this is good for music lovers, it also has video player and a photo viewer for when you... Samsung claims the YH-920 Hard Disc Drive, offers more memory, more song storage, plus more music and user-friendly features than most other digital audio sport devices. ... This Samsung 30 GB MP3 Player has superior storage capacity for music, long battery life and its extraordinary sound...

How Increased Competition Has Led To Advances In The iPod by Gregg Hall
The iPod has been around since October 2001. This is hard to believe. It doesn't seem like it's been around for that long already. Over the last five years they continue to come out with a new and improved model of the iPod. Recently they have released the iPod video, which has also been a great... Other digital devices such as cameras, camcorders, and organizers were available and were selling quite well; nest was the digital music player. ... The battery life was also increased to 16 to 20 hours.

Portable Technology: Getting to Know the Treo by Simon Canfield
Up until the recent past, those who wanted to take advantage of a mobile phone, data organizer, wireless e-mail with text messaging, web browsing and a digital camera had to have separate units for each. With today’s technology comes the Treo – offering all of those features in one small... Treo 600 – Using a rechargeable lithium ion battery, external battery packs are necessary in order to extend battery life, since the original is built into the device and, therefore, not removable. ... Upgrades of the internal battery are available – for about $50 – replacing the 1800 mAh...

Choosing a Laptop Computer Based on Hardware and Software Needs by David Arnold Livingston
Laptop computers are one of the most desirable techie gadgets. A laptop is a portable computer that could comfortably be used while on a person’s lap – hence the name. It contains all the basic and necessary software (like Office System and Internet access) and hardware (like CD-Rom drive and... The battery life of the laptop must allow the user to use and enjoy it outdoors or in areas that do not offer power resources for the public. ... A reasonable battery life should not be lower than 5 hours.

Can't See Your LCD Screen in the Sunlight? Use a Sunshade by Ron Donnelly
Digital cameras, PDAs, color screen mobile phones, laptops, and many other modern portable multimedia devices make use of an LCD or TFT monitor. LCD stands for Liquid Crystal Display, while TFT means Thin-Film Transistor – usually simply just referred to, incorrectly, as LCD, as they appear to... It folds flat easily when not in use, and can be easily accommodated in a camera bag. ... This is always inconvenient, and in the case of digital photography, where a good angle and a steady hand is required, it is often simply not an option.

Battery Wars - This 'Is' the New Wireless Frontier by Dennis Schooley
I can picture it now. Luke Skywalker and Darth Vader face off for an epic light-saber battle to the death! The fate of the world hangs in the balance! Then their light-saber batteries run out of juice so they’re left holding onto a couple of limp licorice sticks, resulting in a leg-wrestling... Thermal runaway is the name of the culprit, and it means that the chemicals in the battery break out of their metal casing, which causes the lithium to ignite when it makes contact with moisture in the air.