Army Archives – The Green Optimistic green tech news, since 2008 Thu, 08 Oct 2009 19:26:14 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 XX55: Military Designed Methanol Fuel Cell Lasting for Weeks https://www.greenoptimistic.com/xx55-military-designed-methanol-fuel-cell-lasting-for-weeks-20091008/ https://www.greenoptimistic.com/xx55-military-designed-methanol-fuel-cell-lasting-for-weeks-20091008/#respond Thu, 08 Oct 2009 19:26:14 +0000 https://www.greenoptimistic.com/?p=4693 The company that produced the XX25 methanol fuel cell we talked about last year, Ultracell, came up with an improved version of it, the XX55. This fuel cell outputs 55watts at 4 amps (10-30 volts), and can last for days or even weeks on a single methane cartridge.

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