Portable fuel cell powers gadgets with water

David Braue
17 June 2010, 11:59 AM


A new handheld fuel cell system can power or charge your phone or GPS using hydrogen extracted from water. Yes, water.


You may have some trouble convincing airport staff to let you fly with it, but Horizon Fuel Cell Technologies has achieved a long-awaited gadget milestone with the launch of a handheld fuel-cell device the company claims will deliver as much power as 1000 AA alkaline batteries over its lifetime.

Fuel cells have been posited as an alternative source of power for years, with extensive ongoing research working on ways to miniaturise and stabilise fuel-cell technology to provide the first real alternative to good old AAs.



Horizon’s solution relies on a purpose-built cartridge, called a HydroStik, which is refilled from a “desktop hydrogen supply”. HydroStiks are inserted into the MiniPak, a handheld conversion unit that produces 1.5W to 2W of continuous power and includes a standard 5V USB port to enable direct plugging-in of any USB-dependent device. Adapter tips support a variety of smartphones and GPS units from Motorola, LG, Sony, Nokia, Sony Ericsson, Samsung, BlackBerry, HTC, and Garmin (here’s the official video complete with 80s-styled synthpop ambient music).



The $US99 starter pack comes with the MiniPak unit and two HydroStiks, with additional HydroStiks costing less than $US10 each and a USB flashlight module thrown in for those who order before June 30. We don't have Australian availability information yet, but will update this story when we receive it.

Perhaps the coolest part of the Horizon solution comes in the form of the Hydrofill Personal Hydrogen Station, an AC-powered device that fills the HydroStik with hydrogen sourced from – yes, seriously – tap water.



The device appears to use your garden-variety electrolysis to separate the hydrogen gas from good old haych-too-owe, then store it in what Horizon calls “a solid metallic state” within a metal hydride sponge that lets each cartridge store up to 12Wh of energy. To produce power, the cell draws in oxygen in measured amounts, creating a controlled combustion reaction that produces electricity for the USB port, and a small amount of water vapour.

Whether or not they can singlehandedly stem the torrent of billions of discarded batteries dropped into our landfills every year remains to be seen, but with fuel-cell technology like this now readily available – and higher-powered versions in the works for other devices (read: laptops) – consumer-level fuel cells are no longer the stuff of science fiction.

The full press release is available here.

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Tin (User):

Nice one - But do the electrodes in the water conversion unit thingy degrade over time like most do?

17 June 2010, 12:48 PM (2 years ago)report abuse Send to a friend reply

Dan Warne (Regular user):

The electrolysis presumably takes a fair bit of power though... I wonder how much, compared to a good ol' AA battery charger...

17 June 2010, 12:52 PM (2 years ago)report abuse Send to a friend reply

Tin (User):

Probably uses a bit more than simply plugging the device into it's supplied charger... But once we start getting devices that use the fuel cell as the power source instead of a battery, it should be more efficient than batteries (I think).

17 June 2010, 1:28 PM (2 years ago)report abuse Send to a friend reply

tl8 (New user):

Actually due to the laws of physics, not really. Sure if you get better than 90% you would be doing well but the losses can probably be reduced by using high quality parts.

A battery charger from mains is pretty inefficient too, just feel the heat that comes out of it.

This is really a great idea and I might not get one now, but in a few years they will really take off.

17 June 2010, 3:09 PM (2 years ago)report abuse Send to a friend reply

Peter Herbison (New user):

Now all they need to do is power the desktop station from solar energy and the problems are mostly solved. Solar storage of energy for anytime use.

17 June 2010, 10:36 PM (2 years ago)report abuse Send to a friend reply

Tin (User):

Wind would also work. Possibly better.

17 June 2010, 10:40 PM (2 years ago)report abuse Send to a friend reply

Peter Herbison (New user):

Now all we need is for the desktop unit to be solar powered. Solar energy stored as hydrogen energy that creates electrical energy whenever needed.

17 June 2010, 10:38 PM (2 years ago)report abuse Send to a friend reply

pietervanpelt (New user):

Given that the Hydrogen is made by electrlysing water, the power efficiency at the end use is about 4 to 6 %.

19 June 2010, 4:09 AM (2 years ago)report abuse Send to a friend reply

pietervanpelt (New user):

Given that the Hydrogen is made by electrolysing water, the power efficiency at the end use is about 4 to 6 %. Fossil fuel -> electricity : 40% efficiency. Electricity -> transported to house -> hydrogen electrlysis: 45% efficiency. Hydrogen -> electricity from fuel cell -> battery charged : 30 % efficiency. Grand total : 0.4* 0.45 * 0.3 = 0.056. So 95% energy (fossil fuel) wasted.
Pieter@van.pelt.nl

19 June 2010, 4:13 AM (2 years ago)report abuse Send to a friend reply

Tin (User):

But stick a wind turbine or similar on the input to the electrolysis unit, and then make the fuel cell power the device directly...

Hopefully this company can inject some profits back into R&D and get it better. But they can only do that if people buy this product to play with (yes, it really will be a toy, IMO).

19 June 2010, 12:44 PM (2 years ago)report abuse Send to a friend reply

pietervanpelt (New user):

What annoys me as a physicist is the article's title : Fuel cell powers gadgets with water. This is the same as the good old car that runs on water. There is no such thing as a water powered device, unless you drop a fair amount of water from a mountaintop into a hydro-electric turbine. So it is the hydrogen that powers the fuel cell. Nothing new there. And it is much cheaper and simpler to power a fuel cell with methanol (a byproduct from alcohol distillation). No matter how you make the electricity to electrolyse the water, it remains a complicated, energy-wasting method. This gadget should go straight to the junkyard.
And, by the way, if batteries still end up in landfills in the US, you guys should really clean up your act. Batteries should be recycled to preserve essential materials and save the environment.

19 June 2010, 7:22 PM (2 years ago)report abuse Send to a friend reply

Tin (User):

Quoting pietervanpelt:
in the US, you guys


The "A" in "APC" is "Australian"...

19 June 2010, 9:57 PM (2 years ago)report abuse Send to a friend reply

pietervanpelt (New user):

Sorry, Tin. I apologise. So the A stands for the down-unders. Well, then I will modify my statement: if in Australia landfills are used to discard batteries, you guys should recycle batteries like they do in Europa and - probably - in the USA.

20 June 2010, 12:37 AM (2 years ago)report abuse Send to a friend reply

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