I can’t wait for it ! It was supposed to be released in September 2018, but it looks like it will be release early 2019.
Yes this scooter has 2 batteries, Yes it takes some space, and it is heavier, however it look like they though of the center of gravity based on how heavy the batteries are, which imply a very smooth and safe drive while turning.
The importance of the 70km is also very important. In cities, the most critical and dangerous moments are when cars pass you.
Finally, We must know that the range capacity NIU gives us is based on continuous driving at 20mph (32kmh).