Originally Posted by Tito1337
Yeah they all say it's "Original" or "Genuine" but I'm pretty sure the one I got is physically smaller than the true original one...
Right now I have charged it and the camera + flash works. I will update if it fails again (most likely on low battery)
Yeah, once it goes below 25% it'll start to go screwy. Eventually it'll get to a point where even at 80% the battery won't be able to supply the voltage for the camera. The problem with aftermarket batteries is that cell degradation is much worse than oem batteries as the quality is not the same. In an ideal scenario, you're best off buying a nexus 5 that someone is selling for parts and use that battery.