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Cassim Rahuman (not verified)    June 26, 2018 - 11:16PM

Is the range extender no longer produced? Expected the feedback pressure to result in a lighter and cheaper version based on technology improvements. Did it fall flat on its face due to bulk and cost? Sad that a great innovation fizzled out. Checking on present LiFePo4 costs and size to replicate on DIY effort.

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