[lsaferite]

Fair enough. But the pros/cons of each tech would need to be balanced against the $/Wh cost. Once the gigafactory is fully online I thought I'd read they were shooting to drop the pack cost in half? If that were true then it'd be 175 vs 100 and the pro/con list would be much more important, right?

[jacquesm]

No, the costs are better expressed in terms of price divided by total KWh stored and subsequently recovered over the lifetime of the battery.

So even if they can get the 'installed' price down to < 30% of what it is today (some corners can be cut for stationary applications) then there is still another barrier to be crossed.

All in all this is extremely exciting because manufacturing batteries at this scale will surely lead to economies unseen before but Lead-Acid has an 80 year head-start and is very hard to beat when weight and density are not a major factor.

After all the one reason why we have Lithium-ion is because of weight and power density.

Laptop and vehicles have a lot in common that houses versus laptops and vehicles do not.