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Source: Hackaday

People Are Building Their Own Tesla Powerwalls Out Of Laptop Batteries

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Unwilling to cough up $8,000 for a 14-kWh Tesla Powerwall?

Then join a pack of industrious DIY-ers who have figured out ways to create their own home battery systems with three or four times the storage capacity of the Tesla Powerwall at a fraction of the cost.

All it takes are a few YouTube videos and a whole lot of discarded laptop batteries.