The elva battery is better. I think the Cat uses an LiFePO4 battery to get the cycle life and safety but still loses on energy density and cycle life and safety versus elva's battery. The Japanese hauler should be better for lifetime and resell value with better battery life and performance plus savings in diesel fuel, maintenance, emissions and other costs.

Caterpillar's All Electric 793 Mining Truck - Everything You Need to know

electric makes much better vehicles once implemented and is driven by the economics/savings.