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?
e.g.
https://www.alibaba.com/product-det...8444120.html?spm=a2700.7724838.0.0.sdTiw4&s=p
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.)
Aren't these devices incredibly cheap for what they are? What am I missing?
e.g.
https://www.alibaba.com/product-det...8444120.html?spm=a2700.7724838.0.0.sdTiw4&s=p
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.)