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To: Maurice Winn who wrote (68984)	5/7/2008 2:50:55 PM
From: gg cox	Read Replies (1) \| Respond to of 74559

<<Being in the environmental business, I suppose they have to use words like sustainability, and counting how much CO2, methane and SOX they put out compared with lead acid batteries, but that stuff makes me feel queasy as though I'm getting enmeshed in a cult business dependent on lunatics for profit, which is not what I like to invest in.>> VRB is in the make sense business..nothing to do with the environment..leave that up to soap box Gore. <<Lead acid batteries put out so little CO2, CO etc that they are irrelevant.>> Yes,if lead acids are discharged regularly by 30 percent, there is only aprox 2000 cycles..VRB well over 10,000 to 80 percent depth of discharge , that is the advantage. <<Diesel generators are noisy brutes, so it would be nice to have batteries to recharge so engines could be turned off in the suburbs at night. And anyway, a diesel generator would produce too much electricity for just a little laptop to keep working. So storage would still be needed>> Diesel generators are more efficient at high RPM.VRB can be charged by diesel at high RPM and then shut down until VRB is discharged by 80 percent..then recharged (diesel, wind, solar, grid, wave tide etc) <<If they started developing little batteries, I'd be more interested.>> VRB vary from 5 KW to MW's ,with lower energy density..not for laptops.<g>but can run them ..its a battery. <<The fear about sulphuric acid is amusing, with lots of regulatory costs and hassles. I suppose chemicals have to be controlled because things will go wrong and some planning is necessary to avoid pouring sulphuric acid into a fish farm etc.>> VRB has mild sulphuric acid, Vanadium never degrades so value is what the vanadium market is ..if the battery is ever recycled.This is doubtful, as the only two components that need replacing to keep battery operational are 2 pumps,minor components, and cell stack.