Tesla aims to unveil ‘Solar Roof’, next gen Powerwall and new Tesla charger on October 28

[Morgen]

[QUOTE=Headhumpy;51109893]is there anywhere where they go into more detail of the chemistry of both systems?[/QUOTE]

[QUOTE]And he mentioned that there are indeed different chemistries in the two Tesla Energy products. The backup power option, the Powerpack, is quite similar to that in the Tesla Model S and X, using a nickel-cobalt-aluminum cathode. The daily cycling option, the Powerwall, is made of nickel-manganese-cobalt (with “quite a lot of manganese in there”). The first is meant for ~60–70 cycles per year, and the other one for 365 cycles a year. Tesla expects the Powerwall to last for approximately 15 years, ~5,000 cycles (but with the warranty being 10 years). The Powerpack is expected to last for, “depending on how it’s used, anywhere from 1,000 to 1,500 cycles.” And they have comparable calendar lives.
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[url]http://cleantechnica.com/2015/05/07/38000-tesla-powerwall-reservations-in-under-a-week-tesla-elon-musk-transcript/[/url]