"But their cell phone battery died, and contact was lost, " the department said in a news release.
She went on to say that she used them often, but mostly when her cell phone battery was dead.
Khare's device, a black, rectangular type of supercapacitor just over an inch long, can charge a cell phone battery in 20 to 30 seconds, she said.
When they tried to use the phone, they discovered that the battery had died, and were given either a brand-name replacement or a cheaper generic cell phone battery.
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With its patented InGaP-Plus (Indium Gallium Phosphide) technology, Anadigics may have leapfrogged over its AlGaAs (Aluminum Gallium Arsenide) competitors by enabling some 20% to 25% longer cell phone battery life.
Before my serendipitous encounter, I had my eye on the Motorola 89442N Universal External Cell Phone Battery, a pack about the size of a phone with a bantam micro-USB arm.
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She briefly called to tell him that her cell phone's battery was low.
The lithium-ion battery in a cell phone, for example, is safer because the battery is so close to the outside of the phone that heat does not build up and cause a problem.
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"Esha Khare, 18, of Saratoga, California has received the Intel Foundation Young Scientist Award for developing a fast-charging super-capacitor that fits inside a cell phone, charges the battery in under a minute, and holds it for long, " the paper adds.
With that in mind you could jumpstart a car with the battery in your cell phone.
But, police say, there was no activity on Kopetsky's cell phone after she walked out of school, indicating that the battery went dead or was removed from the phone.
My ancient cell phone's gas gauge is similarly overoptimistic, and as its aging battery holds less charge than ever, the extra-big spare keeps me connected.
As handsets become more capable from battery and speed perspective, the migration of customers using the cell phone as a primary source of engagement is increasing quarter over quarter exponentially.
Bluetooth low energy runs off a small coin cell battery, lasts about a year, and allows a small tag to send data to a phone.
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