Back to the articlere: Simon Ball #
Posted Wednesday 7th January 2009 17:07 GMT
I'm not sure, but I think the article states that that's the weight of 3 cartridges, each of which holds 1080 watt-hours.
US forces order fuel-cell units for medevac stretchers
Is it just me.... #
Posted Wednesday 7th January 2009 14:58 GMT
Or is 1080 watt-hours rather underwhelming for a fuel cell system that weighs 18 Kg? That's only 60 watt-hours per kilo, which is within the reach of standard nickle-metal-hydride batteries, never mind lithium-ion. And that's just rechargeable batteries. There are a range of lithium chemistry primary batteries already used by the military that can achieve energy densities four or five times higher than this.
@simon #
Posted Wednesday 7th January 2009 17:17 GMT
i think the idea is to eliminate recharging time, rather than energy density, you could essentially completely refill the fuel cells in minutes without interrupting the power flow, although chemical batteries may allow for this too, but offend the greenies.
how heavy are individual cartridges? #
Posted Thursday 8th January 2009 00:34 GMT
a couple cartridges might be enough to drive a fuel cell motorcycle reasonably well
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