Microsoft is gearing up to showcase its first Windows 10 Mobile handsets tomorrow - the Lumia 950 and its XL version - along with the newest Surface convertible. The phones will be the poster kids for Microsoft's brand new push in mobile hardware, after it introduced the screen size-agnostic Win 10, and wrote off the Nokia merger, starting with a completely clean slate.
A few press renders and prototype photos of the new Lumias have already leaked out, along with their specs, so we pretty much know what to expect in terms of hardware. What we didn't know so far, however, that the rumored 3300 mAh battery of Lumia 950 XL might be removable. The pictures below display a prototype with 3340 mAh typical capacity, meant to be pried out, and a SIM card or a microSD slot inserted, then put back into place. That's quite the departure from the usual Lumia sealed battery concept, so tomorrow we'll be all ears if that claim turns out to be true.