In his calculation that he had used 37.8 kWh to reach the lake, he considered that the Rivian<\/a>\u2019s battery pack had 135 kWh usable capacity, which it doesn\u2019t. Our own Tom Moloughney and Kyle Conner measured this in another video and found that the usable capacity of the big Rivian battery is actually around 125 kWh, which means Rex actually used a bit less electricity to complete the climb than what he sates.<\/p>\n He is made aware of this in the comments and then calculates that with 125 kWh, the Rivian could have done around 137 miles of driving in those conditions. It\u2019s worth noting that he obviously used most of the electricity on the first leg of the journey, going uphill, and then used hardly any at all on the descent.<\/p>\n Now even if this result is still a pretty good rough indication of how much you can actually drive one of these Rivian trucks off-road<\/a>, a test would probably need to be performed on a more flat trail and that could yield a different result. This calculated range is only really accurate for a trail with a similar altitude change to this one, so more (and more diversified) testing still needs to be performed.<\/p>\n <\/p>\n