zlacker

I have no info on Tesla batteries. But, just as a point of reference, you can now buy knock-down 48V battery "kits" from China for under $90/kWh. They include everything you need: case, cells, BMS, circuit breaker/isolator, and fire suppression. Assembly takes about an hour. (The raw prismatic cells without the rest go for ~$50/kWh).

Shipping from China to the west coast runs an additional $30/kWh due to the weight of the cells and volume of the box (shipped in several boxes to reduce cost). So you can have a 300 lbs, 15 kWh 48V battery shipped to your door for about $120/kWh).

High voltage EV batteries need additional components (like HV contractors) due to stacking so many cells in series, but it seems entirely plausible that Tesla's economies of scale allow them to offer a 75 kWh battery for $10k (~$133/kWh) plus installation.

>>labcom+(OP)
Automotive grade cells are a bit more expensive (generally higher C rates, dunno if they have other specs)