I don't quite buy this romantic image of an engineer trying to fight for the people still using the device in 10 years time - I really doubt this was designed so that it could be used after the lithium battery completely died.<p>More likely it was designed so you could use some batteries that you can buy anywhere in the world when you are out and about traveling/vacationing and the battery is flat.<p>I work at a fairly major place you've all heard of with a reputation for software engineering excellence etc. One of the engineering managers said something to me the other day: "You know, we engineers here at <Big Co> write our software with this idea that it needs to be extensible and flexible enough to handle anything, like it's going to be around forever. In reality a project only lasts 3 or 4 years, maybe 5 before it is deprecated, replaced, or shutdown. Imagine how much more we'd get done if we were more pragmatic and not obsessed with future-proofing something we <i>know</i> will be replaced soon"? Food for thought.