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How to jump start a car with AA batteries

"Your car battery is dead and you like a boost to jump start? Maybe you can use AA batteries to crank the engine..."

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Can a $2.50 gadget extend alkaline battery life by 800%?

Batteriser_Landing_Gallery1

It Betteridge! Jon Phillips reports on the Batteriser, a metal sleeve promising "up to" 8X more life from disposable batteries.

It’s essentially a voltage booster that sucks every last drop of useable energy from ostensibly spent batteries. So, instead of using just 20 percent of all the power hidden inside of your Duracells and Energizers, Batteriser makes effective use of the remaining 80 percent. Voltage boosters are nothing new, but Batteriser scales down the technology to the point where it can fit inside a stainless steel sleeve less than 0.1 mm thick. Roohparvar says the sleeves are thin enough to fit inside almost every battery compartment imaginable, and the combined package can extend battery life between 4.9x for devices like remote controls and 9.1x for various electronic toys.

Here's the published patent application, which is not a patent.

Red flag: Phillips writes that the creator proved he wasn't selling snake oil by demonstrating the gadget for him, but there's no description of independent testing. Did the guy just play with it in front of you? Who provided the batteries? What were the test controls? Boosting voltage at the expense of amperage and getting 800% more operational time, really? Turned down VC because the "money trail" led to battery companies, in favor of Indiegogo? Consumers with mountains of nearly-dead alkaline batteries want to know!

Solar-charging battery for USB devices with massive 20000mAh

zerolemon

The ZeroLemon SolarJuice 20000mAh Battery, which sells on Amazon for $80, is on sale for the next five days at Stacksocial for $50. I'm getting it for an upcoming trip with the family.

What happens when Louis Armstrong's batteries are low

Wherein the Mind of God is shown through His words. [Youtube via Arbroath] Previously.

Micro-windmills could someday power your phone

Wndm

Above is a micro-windmill that University of Texas Arlington researchers suggest could someday be used to charge mobile electronics if they were embedded en masse on the device's case. The MEMS (micro-electromechanical systems) are fabricated using recesses similar to the way integrated circuits are manufactured combined with origami-like self-assembly techniques.

“Imagine that they can be cheaply made on the surfaces of portable electronics,” says researcher Smitha Rao. "When the phone is out of battery power, all you need to do is to put on the sleeve, wave the phone in the air for a few minutes and you can use the phone again.” She adds that eventually, flat panels coated with the windmills could be mounted to buildings to harvest energy for sensor networks, wireless communications, lighting or other purposes.

Check out the video below of the windmills in action! (via Wired)

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Graphene supercapacitors could make batteries obsolete

A battery can hold a lot of energy, but it takes a long time to charge it. A capacitor can be charged very quickly, but doesn't hold a comparable amount of energy.

A graphene supercharger is the best of both: it takes just seconds to charge, yet stores a lot of energy. Imagine being able to charge your spent laptop or phone battery in 30 seconds, and your electric car in a few minutes. Also, unlike batteries, Graphene supercapacitors are non-toxic.

The Nobel Prize was awarded to the inventors of Graphene in 2010. Wikipedia defines Graphene as a "substance composed of pure carbon, with atoms arranged in a regular hexagonal pattern similar to graphite, but in a one-atom thick sheet. It is very light, with a 1-square-meter sheet weighing only 0.77 milligrams."

(via Tony Moore at the Boing Boing G+ community)