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 Hi guys! 
Does anyone know about lithium ion batteries, such 
as: 
    1. output to size 
ratio 
    2. cost $$$ 
    3. Gasses discharged when 
battery charged, etc 
From what I understand, lithium ion batteries are 
much better than NiCad or Lead Acid batteries, but I don't really know how much 
better. 
Thanks,  
Alan 
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