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EEVblog #751 - How To Debunk A Product (The Batteriser)

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Fungus:

--- Quote from: 0xdeadbeef on June 06, 2015, 12:19:09 pm ---They state the "only 20% are used" and directly derive a "plus 800%" number from it. Indeed they call it "grossly simplified"

--- End quote ---
Yep, the idea that we're only using 20% of our batteries is ludicrous. Laughable, even.

0xdeadbeef:

--- Quote from: Fungus on June 06, 2015, 12:20:33 pm ---One other thing nobody's mentioned (or at least, I haven't seen it) is Ohm's Law, which works against this device.
...
If you boost the battery voltage to 1.5V then most devices will simply follow Ohm's Law and consume 20% more current, therefore shortening the overall battery life.

--- End quote ---
This depends on the device. Indeed if it uses a boost converter to step up e.g. the ~1.5V from one cell to 3.3V, this converter might be a little more efficient when stepping up from 1.5V then when stepping up from 0.9V. Then again, the combined efficiency of batteriser and the device's boost converter will always be worse.

Grapsus:
Wytnucls just says enough to get everyone going into explaining the thing again and again and then he replies totally ignoring everything that has been said to keep the controversy going. Totally classic troll, don't waste your time.

zapta:

--- Quote from: 0xdeadbeef on June 06, 2015, 10:35:14 am ---an increase by 800% would mean that only about 11% of the capacity would be used under normal conditions.

--- End quote ---

Not necessarily.

It's possible that in normal operation you consume more than 11? but waste a portion of it on heat because the battery starts with higher voltage then the minimum required by your device.  Theoretically, an ideal DC/DC can fix that as well.

It's not clear if the debunking here is about 'breaking the laws of physics' or is just about the limitations of our current DC/DC technology.

Wytnucls:

--- Quote from: Grapsus on June 06, 2015, 12:32:54 pm ---Wytnucls just says enough to get everyone going into explaining the thing again and again and then he replies totally ignoring everything that has been said to keep the controversy going. Totally classic troll, don't waste your time.

--- End quote ---

Typical ad hominem statement. Come up with real physics instead. All my posts are backed up by Duracell graphs and application notes. You obviously didn't bother to read or grasp any of it.

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