39 ah of battery and estimated range is only 123 km, that's why I'm not a fan of fat bikes. That's around 2,000 wh of charge for around 120 km?????
I can see the appeal of a lot of different types and why people make different choices, but I guess I just don't see what you get with 4.8" wide tires that you couldn't get with say 2.4" wide tires. Ability to ride on sand or snow? I guess if you live near the beach, otherwise where can you go with a fat bike that you couldn't on a mountain bike?
I looked up the bike on the Biktrix website and the internal battery is 910 wh and there are three options for the external battery, the largest of which is 1,119 wh. It's probably pictured with one of the smaller optional batteries.