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

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Fungus:

--- Quote from: Wytnucls on June 06, 2015, 10:19:40 am ---Why do you think this a scam? The voltage boost technology has been around for a while. The battery manufacturers are well aware of the wasted energy in their product and how to recover some of it.
The miniaturization of the circuit in this gizmo is the clincher.
The 800% battery life increase may even be true in some extreme case. We know marketing will naturally concentrate on those figures to grab the headlines. With most devices cutting out below 1V, the normal battery life extension is more likely to be around 20%, according to the Duracell constant power discharge curve.

This is an electronic blog. Someone here should have the equipment and the skills to disprove the claims with some hard testing of batteries, instead of everybody dismissing it all, out of hand.

--- End quote ---

Well ... as Dave says, many devices will get *less* battery life. eg. The keyboard shown in their own marketing video. Those keyboards consume microamps when you're not pressing keys. This device will probably make average consumption much worse than that, shortening the battery life.

PeterL:
Another disbeliever (at least about the 800% claim):

http://theness.com/neurologicablog/index.php/batteriser-cool-tech-or-scam/

Fungus:

--- Quote from: EEVblog on June 06, 2015, 09:05:26 am ---The miniaturization tech which he seems to specialise in must be impressive to fit in the space. I can't wait to see it myself, I'll buy some when they go on pre-sale.

--- End quote ---
It will be interesting to see what the standby/quiescent currents are.

Efficiency will also be interesting with such a tiny inductor. Maybe they could run it at ultra high frequencies or something.

Also: What will it output when a battery is fresh out of the pack and outputting 1.6V?

0xdeadbeef:

--- Quote from: Wytnucls on June 06, 2015, 11:41:08 am ---They only need one instance to make the statement true. Totally misleading, but we wouldn't be talking about their gizmo if they had only claimed an average of 20% increase. So the advertising fib paid off.

--- End quote ---
They state the "only 20% are used" and directly derive a "plus 800%" number from it. Indeed they call it "grossly simplified", but it's utter nonsense and nothing in their own claims justifies the 800% assumption. So before going into details why a dramatic increase of battery life is unrealistic, one should 1st mention that the 800% number is complete bs.

Fungus:
One other thing nobody's mentioned (or at least, I haven't seen it) is Ohm's Law, which works against this device.

Batteries output around 1.2V-1.3V for most of their lifetime, right?

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.

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