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10'000 mAh battery chargers

Discussion in 'Battery Discussion' started by deonb, Oct 14, 2016.

  1. deonb

    deonb Active Member

    Mar 4, 2013
    Redmond, WA
    I must be just displacing a decimal somewhere, but I can't find the error.

    Aren't these devices incredibly cheap for what they are? What am I missing?


    So that's let's say $5 for 10Ah @ 5V = 50Wh. (There are a bunch of places that sell them around the $5 mark).

    That makes this $100 per kWh, which is far lower than Tesla or GM gets for battery prices, and it's especially since cheap since this is a packaged product.

    What's stopping me from just buying 200 of these for $1000 and string together my own 10kWh powerpack? (Apart from common sense.)

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