I was reading that the Model S uses 3100mAh type 18650 cells. I searched the cell type and found that there are cells rated to 4000mAh available.
Figure the number of cells:
3.7v x 3.1 Ah = 11.47 Wh 85000/11.47 = 7410 cells (give or take)
Now the interesting part:
3.7v x 4Ah = 14.8 Wh 14.8 x 7410 = 109668 or ~110kWh
Seems quite possible then by just using the higher capacity cells.
Figure the number of cells:
3.7v x 3.1 Ah = 11.47 Wh 85000/11.47 = 7410 cells (give or take)
Now the interesting part:
3.7v x 4Ah = 14.8 Wh 14.8 x 7410 = 109668 or ~110kWh
Seems quite possible then by just using the higher capacity cells.