Smartphone battery technology

3G and 4G smartphones are the fastest growing segment in the mobile handset industry in terms of units and services provided. Smartphones are handsets with typically a large screen, many times a touchscreen, physical or virtual keyboard, an operating system platform which allows for downloadable applications such as Apple’s iOS*, Nokia’s Symbian OS*, RIM’s Blackberry* OS, Palm’s WebOS*, Microsoft’s Windows* Mobile OS, and Google’s Android* OS. In fact, data communications and use has now surpassed voice on smartphones. No longer are applications simply downloaded for use, but they are connected to the internet for use. Applications such as interactive maps, multi-player gaming, location based services, online searches and shopping that are always on and always connected. With multi-tasking operating systems, users are usually unaware that their smartphone may connect to the internet for data continuously and over 1000 times per day.

The changing and increasing use of 3G and 4G smartphones has created a strong need for improved battery life to stay connected for data and for voice, but yet stay within the physical constraints of a smartphone design that is thin, easily held by a person’s hand, functional and useable in terms of screen size and keyboard, and striking in shape and aesthetic style. New 4G smartphones with advanced cellular radios have increased power consumption and the higher wireless broadband access speeds also means increased processor and I/O performance in the smartphone platform, again demanding increased amounts of energy but within the physical design constraints of handheld size and volume.

Cell phone batteryTo date, these tradeoffs in physical design versus functionality and battery life have created smartphones that are still too limiting. In any smartphone today, the battery occupies a significant amount of volume, almost always the largest volume of any single component in a smartphone. They can be too bulky or heavy due to a large battery, or light in performance and features due to a small battery.

Enevate is developing breakthrough Li-ion batteries that initially will deliver over 30% more energy density by volume and weight, with a roadmap to eventually deliver twice as much energy capacity in the same volume. Imagine a smartphone that can last hours longer while constantly connected to the internet or talk even longer while being “always-on, always-connected” with data. Or imagine a smartphone that is significantly thinner and easily pocketed while maintaining all the functionality you have today. Enevate’s batteries will enable the best smartphones to be even better.

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