Tesla and Panasonic Collaborate to Develop Next-Generation Battery Cell Technology

[rolosrevenge]

The cells in the current Roadster battery pack got locked down a while ago and I think those are 2.4 Ah cells. So if that's the case, 3.1 Ah cells would mean a 29% improvement.

So the current cells are 2.4 Ahr? My Energizer AA rechargeable NiMH are 2.45 Ahr. That doesn't seem right to me since the Li Cells used in the Roadster are larger than AA. Also a sales rep at the Seattle store told me today that the newer batteries were for the Model S.

[TEG]

So the current cells are 2.4 Ahr? My Energizer AA rechargeable NiMH are 2.45 Ahr. That doesn't seem right to me since the Li Cells used in the Roadster are larger than AA. Also a sales rep at the Seattle store told me today that the newer batteries were for the Model S.

AA are ~1.5V, 18650 are ~3.75V so 2.5 times the Wh for the same Ahr...

[Iz]

I don't see why that couldn't be a Tesla-supplied upgrade option down the line.

Agreed. However, it would be a win-win for TM and Panasonic, as well as reservation holders, if they could deliver Model S with 3.4 cells.

[domenick]

Agreed. However, it would be a win-win for TM and Panasonic, as well as reservation holders, if they could deliver Model S with 3.4 cells.

....and 2nd gen Roadsters with 4ah.

[rolosrevenge]

AA are ~1.5V, 18650 are ~3.75V so 2.5 times the Wh for the same Ahr...

I have always though that Ah is a stupid unit for batteries. Wh makes so much more sense since it is a measure of energy, which batteries store.

[TEG]

Toyota's battery venture with Panasonic gets renamed Primearth EV Energy

[Bradleybang]

So the new Toyotas will run on PEE.
Seems more yellow than green.

[TEG]

I would go with PEVE since EV is already an acronym.