[chbot] Homebrew powerwall

[Henri Shustak]

> The amount of time and money he spent building up those modules! Once in those big packs the time spent in maintenance is huge as well, when one cell goes south. The only thing going for them is compactness (but that might cause heat problems?) and good looks. I'm still not convinced directly soldering onto the battery is a good idea either.


How about opting for a lead based battery chemistry. Lead carbon although far heavier (not great for power to weight ratio in a car) offers some interesting benefits such as cycle life over deep cycle gel and even AGM depending upon your usage.

However, in terms of the awesome factor of lots and lots of 18650's + a more modular approach just purchasing some Tesla Model S battery modules could be a simple (if not more expensive) approach than constructing your own modules. 

I agree that soldering is probably the best approach, ideally some sort of spot welding approach would be better. Although it is not going to offer the easily replaceable option. You will not have a 18650's falling out during an earthquake.

Critical feed back would be welcomed :)

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