What I'd really like to see is more consumer devices that run on removable lithium-ion cells. I have several flashlights and power banks[0] that run on 18650 ce

What I'd really like to see is more consumer devices that run on removable lithium-ion cells. I have several flashlights and power banks[0] that run on 18650 cells. I'm thinking of adding a Solderdoodle soldering iron to that and maybe constructing a device to provide power to my laptop's DC port while changing its battery. Of course, I don't have my hopes set too high for this, as there's a certain degree of liability risk in handing lithium-ion cells to consumers; they don't take as kindly to abuse as alkalines and have been known to explode on occasion when severely mistreated. [0] I'd rate the Miller ML-102 power bank as a best-in-class product for running on removable 18650 cells and putting out 1.8A on a single cell. It costs $6.