Then and Now: The Evolution of Cell Phone and Tablet Charging
Thei и and NOW The Evolution of Cell Phone and Tablet Charging. IMPORTANT MOMENTS IN CELLULAR HISTORY Ш 19461 The year the first primitive cell phone was used by Swedish Police officers. The phone could make a total of 6 calls before the battery died. Believe it or not, the technology that powers our cell phones is based on the old two-way radios used in taxis, and police cars. Early phones could only run for about 30 minutes and took a full 10 hours to charge! 80 POUNDS The weight of an early cell phone by Eriksson. Nickel Eadmium Batteries Terminal Period of Popularity: 1980s and 90s. Terminal Seal Advantages: The first cell phone battery Case Disadvantages: Suffered from the "memory effect", where once the battery has once been charged fully it will never reach such a full charge again. Separator Contact Tab Plate Extremely bulky and heavy. Made of toxic cadmium, which made them hard to dispose of. Nickel Metal Hydride Batteries Period of Popularity: Late 1990s Negative Electrode Advantages: Non-toxic. Did not suffer from the "memory effect". Positive Electrode Lighter and short charging period. Disadvantages: Extremely bulky and heavy. Separator Made of toxic cadmium, which made them hard to dispose of. Expensive. Lithium Poly lon Catteries Positive Negative Tab Tab Film Negative Electrode Separator Positive Electrode Laminated Film Period of Popularity: 2000s and onward Advantages: Increased power capacity and very light-weight. Disadvantages: Rarely used because of high cost. NO CORDS NEEDED HOW WIRELESS CHARGING WORKS Wireless is based off of inductive charging or electromagnetic induction. It involves two coils, the primary, sending the power, and the secondary, that receives the power inside the device being charged. An electric current flows through the primary creating a magnetic flux. This flux is received by the secondary and can supply up to 4 watts of power. Qi is Chinese for "vital energy". The Wireless Power Consortium (WPĆ) is set to do make Qi the definitive unit of energy measurement worldwide. This will allow for global wireless charging regardless of make, model, or country's power plug. Sources: http://chargeall.com/cell-phone-battery-history/ http://www.vintagemobilephones.com/other_phones.html 888-212-8295 CableWholesale http://www.cablewholesale.com/support/technical_articles/qi_whiz.php Infographic Designed by: Fewer Dollars. More Sense. ENationalPositions Profitable Internet Marketing
Then and Now: The Evolution of Cell Phone and Tablet Charging
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