[Chrislong]

There are loopholes for cells contained in a device - such as laptop batteries, and then loopholes for spare batteries carried for that device. Chances are a passenger would never ever get stopped by a customs official to challenge this anyway, from experience the customs officials for passengers don't know what they're looking for except the obvious - because there is so many rules, by the time they;ve checked them the passenger has long gone. Whereas for cargo they have more time to check facts (and its automated too).

For example, if I was to ship a shipment of 100'000pcs of a Lithium button cell (which I do), I have to do dangerous goods paper work, pack in special cartons, include relevant UN paperwork etc. But if those cells go through a process and are fitted into, say, a watch. Then for me to then ship 100'000 watches is a standard shipment, easy.

The reason for the size limits is that Lipo and Nimh need to be on a level playing field. Nimhs have a cell size to comply with and when they didn't the door shut on them - remember the IB38's? So Lipo needs similar goal posts, granted the packs are very different, but for fairness with our demands to manufacturer if not any other reason, we need a dimension rule.

It'll all work out for the best.