Magic case that makes the world turbulent "Is the magic case that makes the battery 8 times longer lasting" is the glitter?

The magical battery case that it will be usable eight times longer just by attaching it to the battery that caused the battery exhaustion the other day "Batteriser"Was announced and I took up surprises that the media of all over the world is an epoch-making hardware. However, the view that Batteriser doubts its performance as to whether it can truly extend battery life by 8 times is appearing at once.

The Batteriser Explained | EEVblog - The Electronics Engineering Video Blog
http://www.eevblog.com/2015/06/07/the-batteriser-explained/

You can understand what kind of tool "Batteriser" which shocked a lot of people in the first place by one shot if you look at the following movie.

Meet Batteriser - vimeo


This is Batteriser. It is a type of hardware attached to the battery, making it amazing performance to bring up the battery holding by 800%. Compact, developed by Professor Kiemers · Parvin of San Jose State UniversityDCDC converterIt is said that boosting battery life can be greatly extended by boosting.


According to Battery who develops Batteriser, while most batteries are using, the voltage drops and the machine becomes unusable at about 1.3 V. Therefore, only about 20% of energy can be used, and most of energy is discarded without being used, Batteroo says. On the other hand, when Batteriser is attached to the battery, it always increases the voltage, so you can use up the energy until the end and you can use it up to 8 times longer.


Since Batteriser is very compact, it can be used in various equipments attached to a battery.


Although the DCDC converter itself is a common device, it has a feature of Batteriser in that it was made into a compact shape with almost no change in size even when mounted in a battery, and the compact boost circuit designPatentIt is said that we have acquired.

However, in light of the scientific 'common sense', it is pointed out that Batteriser that appeals "800% up" and "8 times longer lasting" is strange. Electronic design engineer'sDavid JonesMr. blogEEVBlogAs soon as I'm criticizing, "Batteriser is strange" with scientific data as the basis.

This is a major battery manufacturer'sDuracellDischarge curve showing the voltage characteristics during discharging of an alkaline dry battery that is open to the public. The blue curve shows the voltage of the alkaline battery as it descends with the discharge, and the area below the blue curve shows the total discharge, ie the energy released by the battery.


In light of the characteristics of this general alkaline battery, according to the green auxiliary line, the energy left by the voltage drop to 1.3 V, which Batteroo claims that many devices will be unusable, is about 45% , Batteriser says "It's over 80% energy that I have not used up" is exaggerated.

Furthermore, Mr Jones says that the assertion that "most devices that operate with dry batteries will not operate properly if the voltage drops to 1.3 V" is not the case. The lowest voltage value that Mr. Jones would not operate properly with a typical battery-powered device was examined. As a result, the thermometer reached 1.2 V, the DAT recorder reached 1.1 V, the oscilloscope dropped to 0.95 V, and the calculator dropped to 0.8 V It seems that the average value of the lowest voltage of 13 types of equipment examined was 1.1V.


Mr. Jones stated that many of the equipment designed and developed assuming 1.1 V as the minimum voltage value is mid common sense for those involved in the industrial design of electronic equipment.

The graph below shows the discharge curve of a nickel metal hydride battery widely used in rechargeable secondary batteries. Nickel-metal hydride batteries have lower initial voltage than alkaline batteries, but have the feature that the pace of voltage drop accompanying discharging is overwhelmingly smaller than that of alkaline batteries. If the voltage of the nickel-metal hydride battery drops abruptly is about 1.1 V, designing so that the equipment operates normally in the presence of the voltage of 1.1 V or more, the capacity of the nickel hydrogen battery is maximized Because long battery drive time can be realized, we design it to operate at 1.1 V in product development.


Note that the characteristic of the voltage drop during discharge is almost the same regardless of battery temperature.


In the blog's consideration article Mr. Jones in addition to the assertion that the usage conditions presupposed by Batteriser's selling phrase "800% up" and "8 times longer lasting" based on the characteristics of general batteries are in reality apart Also poses a simple question: "If you can use 80% you do not use, you may just be up 400%?" If you want to sing up 800%, you'd have to say "I use only 11.1% of the battery". In addition, "800% up" is not "8 times longer lasting." It should be "9 times longer lasting", and I also put in the right Tsukkomi.

Since Batteroo does not explain any assumptions that will achieve "800% up" battery life, Mr. Jones put forward that he does not know details, Mr. Jones said that the efficiency of the DCDC converter is at most 90%, generally not more than 80% , So I think that it would be impossible to achieve 800% increase. But by utilizing the DCDC converter, even if you can increase the battery life by 50%, Batteriser is still an excellent product, and if it is commercialized it will probably buy it and try it Batteriser's We are giving constant evaluation to compact technology.

Incidentally,PCWorldAccording to Batteriser, June 2015 Cloud Funding siteIndiegogoPrior reservation will be accepted, general sale will begin in September 2015, and it will be released for four dollars at 10 dollars (about 1200 yen).