What do you plan to do with this machine? If you plan on anything more than a toy to run around the block on you will need speed and range. Unless you plan on full Vetter style streamlining, you will be lucky to get 60 mph top speed and 150 Whr per mile. A 40 mile range will take a 6kWhr battery. $3,000 for LiFePo4. Or $1,500 for lead but now they weigh 360 pounds and are way too big to fit on a bike.
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