> It also means the battery can't have a funky custom-designed shape that devices with integrated batteries can ... so you're saying that designing for a detac

> It also means the battery can't have a funky custom-designed shape that devices with integrated batteries can ... so you're saying that designing for a detachable battery forces a certain finesse when designing the rest of the internals, so that there is not any funky-shaped gap big enough to put an entire LiPo cell. Also, one can easily make an "extended" model of replacement battery, which protrudes rearward (or downward[1]) of the rest of the case. [1]: http://www4.pcmag.com/media/images/396005-lenovo-thinkpad-x250-right-side-with-extended-battery.jpg?width=630 http://www4.pcmag.com/media/images/396005-lenovo-thinkpad-x2...