[Zenst]

Nice though would not a A4 (laptop sized) slab instead of a box be better as could then sit under the laptop and also easily fit inside the laptop case.

Just a thought.

[kalleboo]

It's a lot more expensive to make custom-shaped cells than to pop a couple of standard cylindrical cells into a square box.

[Zenst]

True, though more production of flat cells than round, mobile phones case in point - they are all flat in shape. Actualy not really come across flat LiOn cells personaly in any form. Capacitors - yes.