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Old 5th May, 2008, 09:50 PM
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Sony Unveils Ultrasmall Hybrid Fuel Cell

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Old 6th May, 2008, 10:46 AM
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Interesting. Although it's not far off the size of a mobile phone that it's up to powering...
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Old 6th May, 2008, 04:40 PM
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I'd guess it would be sometime before these are used in phones. Would be very useful in a hand-held GPS, for use in the great outdoors...
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Old 6th May, 2008, 05:15 PM
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The reason I mentioned the phones was the secondary Li-polymer battery. The battery is there to even out the load when the device connected consumes more power than the fuel cell can provide, which is typical of a mobile phone's pulsed transmissions.

How much power the device can actually produce continuously is unknown. The 'peak power' appears to be 3W, which is what the Li-polymer battery can manage . What the average power production is, who knows?
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Old 6th May, 2008, 08:25 PM
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3 Watts sounds small to me, but I'm not an EE.
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Old 6th May, 2008, 11:54 PM
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Surprisingly, it is enough for a digital mobile phone.
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Old 7th May, 2008, 09:59 AM
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You can go a long long way on 3W. Not enough to power a laptop, but enough for small embedded systems.
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