Huawei has been in active development of the new Mate 20 PRO. With Huawei targeting the bigger audience at Europe and America they are sure to come up with a different mindset and strategy.
Recent leaks reported show that Huawei has been working on their biggest ever battery for their flagship, the Mate 20 Pro. Their previous smartphones have had a 4000 mAh battery and that is how much they’ve pushed the feature.
Based on the leak it is obvious that Huawei are focusing on the screen on time here. Where all smartphone manufacturers have only one mindset and that is to shrink the bezels of their phones, Huawei is breaking the trends and hopefully will encourage others to get out of the bezel design race aswell. 
My guess would be a 5000 mAh battery due to the fact that efficiency has a direct relation with time and as time passes by higher specified smartphones wouldn’t require a huge battery to keep up. Looking at Huawei themselves it is safe to say that they’ll give their best to keep the 2nd spot beside Samsung in global smartphone market shares.
To sum this up I am looking forward for further leaks and news by Huawei and expect the best from them. Do note that these are merely rumors and do not confirm the actual implementation in the final build.
