They could of done way more to optimize battery. Im getting just as good if not better battery on my u11 which has only a 3000mah and a QHD screen. This is just an example of the u11 battery from this mornings usage. Almost 2 hours SOT and only used 17% while on LTE and streaming ESPN since I got to work. On pace for 8 Hours SOT. *EDIT This is also with auto brightness not like the poster above who set his OP5 at 15-25% for maximum battery. If I did that I would get 10 hours easy.

