Hi Henrik, the teardown is showing some great detail. It's nice that these ‘Power-bars’ also include a Torch/Flashlight feature (5mm LED). So a real lygte-info mash-up device! Quite why they’d bother putting a crappy 5mm led into an 18650 powered device I don’t know!
It was the unknown quality attributes of these 18650 Lithium-ion powered ‘Battery-pack’ devices which worried me. These devices are very popular here in the UK because EE (mobile phone network) has been giving them away for free to millions of customers.
Do we think they even know or considered the potential risks and inherent dangers of cheap Li-ion cells and whether it would be wise to trust unknown cells that have been handled by others prior to their advertised in-store device swap feature...
I was especially interested in any analysis of this Chinese cell which will be carried around by millions of people in their pockets, bags, etc!
Many thanks again; I very much enjoy and appreciate your work.
'R'