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| EEVblog #751 - How To Debunk A Product (The Batteriser) |
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| 0xdeadbeef:
I wonder if I'm the only one to notice that even the basic mathematics are wrong? If "usually" 80% are thrown away and this product could use all of these remaining 80%, it would extend the battery life from 20% to 100%. This is a factor of 5, not 8. When we use a comparative as in "more" (capacity) or "longer" (time), the original capacity/runtime would be extended by 400%. E.g. let's assume a toy bunny that could drum 100 hours if every bit of capacity in its batteries was used, but because of the 20% assumption it would "usually" stop after 20 hours. Now with the magic device, the bunny could drum 100 hours, which means that it can drum five time as long: The improved capacity would be 500% of the originally usable capacity. However, if we are talking about much longer the bunny can drum, it's 80 hours longer which is a plus of 400%: The capacity would be improved by 400% of the originally usable capacity. Even ignoring all the other stuff, there is no way that the runtime of any device could be increased by 800% with the "only 20% used" assumption. To justify a "8 times as long" claim, the usable capacity would have to be 12.5% (100%/8). To justify a "8 times longer" claim, the usable capacity would have to be 11.11% (100%/9). |
| Muttley Snickers:
I think that the specific application would need to be considered, for instance if I were 1500 meters from a recharging station and couldn't get a tow then I would have no hesitation in pressing the ULDO Bypass button, and neither would Scotty if the captain needed phasers. Muttley |
| amyk:
Related: https://www.eevblog.com/forum/chat/energy-harvesting-of-used-batteries/ https://www.eevblog.com/forum/crowd-funded-projects/batteryvampire/ |
| Delta:
Great video Dave. Classic EEVblog! 😀 |
| VK3DRB:
From http://www.recyclinginternational.com/recycling-news/8815/e-scrap-and-batteries/united-states/bringing-used-batteries-back-dead "This innovation could spell bad news for a world battery industry worth nearly US$ 90 billion. It also has the potential, say the researchers, to shrink the annual volume of battery waste in landfills by a factor of eight." These "researchers" or the media are speaking frogshit. It reminded me of the famous car racing driver Peter Brock and his :bullshit: Energy Polarizer. He believed the Energy Polariser (containing crystals and a magnet) would align the molecules of the car. :-DD More frogshit... A bloke down the road actually told me that Herbal Life products cures cancer, but the doctors are all keeping it secret because they would lose money from the cancer business. :palm: An ELECTRONIC ENGINEER told me flaxseed oil cures cancer, but the doctors are all keeping it secret because they would lose money from the cancer business. :palm: |
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