Electric forklifts such as the RF15E–RF35E are built first for indoor floors. Brief outdoor travel on smooth, dry pavement is normal in many plants.
Standing water, steep ramps, and unpaved yards shorten component life and can exceed traction and braking assumptions. Lithium models still need a charging plan that is not a wet dock.
If most of the work is outdoors, look at Proskid rough-terrain or diesel forklifts instead of stretching an indoor electric truck.