So 8 cells (4 in series, 2 in parallel) would provide 16ah and 400A max discharge current, down to -4 *F and charging as low as 14 *F and cost only $84. Adding the cost of a VRUZEND battery kit at $34.99 brings us to $118.99. Add in some sort of inexpensive LED balancing modules and that's one pretty cheap lithium battery!
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2013 Toyota Prius C 2 (my car)
2015 Mazda 3 iTouring Hatchback w/ Tech Package (wife's car)
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