@ rogerg "A 12v car battery is 6 two volt cells in a case." And so what ??
@ hetfield "Yes, lead acid can do it, Li-Ion not. In the 787 batteries each cell-array (8) has 6 cells in parallel. So, one cell has litlle over 10Ah."
Are you saying, hat LiIon-cell can have only max 10Ah capacity? Why is that?