A:AnswerI work in the area of reducing energy consumption of LCD displays. It is not true that running at 1080P will help battery life. The reason that battery life is reduced with a 4K display is that there are 4x more transistors (one per sub-pixel) blocking light for the 4K case and they are there weather you are running 1080P or 4K. Guys, if you don't know, don't guess.
A:AnswerThis is most likely the 97whr battery. The smaller battery only comes with the HDD model not the SSD. The instillation of a SSD allows more room for battery.
A:AnswerI believe the Dell warranty would be international, but the Geek Squad Protection would only work in North America as Best Buy/Geek Squad does not operate overseas.