I routinely make 14-hour plane flights. Having long battery life for that is killer, at least until we finally see plug-in power ports in economy class. But ev

I routinely make 14-hour plane flights. Having long battery life for that is killer, at least until we finally see plug-in power ports in economy class. But even day to day, "12 hour battery" is assuming CPU- and GPU-light workloads. The actual work I do, requiring a lot of compilation and GPU crunching, cuts a battery life in half or by two-thirds depending on the model. A typical laptop then is reduced to about ~2hrs of battery life, and an extended "12 hour battery" is more like 4-6hrs.