Deliveries of the Hummer Edition 1 will begin next month, 14 months after it was announced. The truck will use GM's Ultium battery, giving it up to 329 miles (~529 km) of range. The Edition 1 will be the first all-electric vehicle released by Hummer.
https://www.notebookcheck.net/Deliveries-of-the-new-Hummer-electric-truck-will-begin-in-December-with-lower-than-expected-range.581223.0.html