MUNICH—Caterpillar Inc. unveiled four prototype battery-powered construction machines at the Bauma trade show here. The products included the 301.9 mini excavator, 320 medium excavator, 950 GC medium wheel loader and 906 compact wheel loader.
Each machine uses lithium-ion batteries developed by Caterpillar engineers. They also include onboard AC chargers, but the company eventually plans to offer an offboard DC fast-charging option.