Electric Refrigerated Truck Range Planning: Traction and Auxiliary Loads

Define the cargo-temperature duty before choosing a chassis

Start with the cargo requirement. Record the temperature band, loading temperature, transit time, route, delivery stops, dwell at each location, door-open duration and expected ambient conditions. Clarify whether the vehicle must pre-cool before loading, maintain temperature during loading, wait with doors closed or support multiple compartments.

Refrigerated distribution includes scheduled store delivery, food service, depot transfer and regional routes. These duties differ in stop density, payload, dwell and charging patterns. Document loaded and empty kilometres, payload range, pallet count, sequence, dock availability, return time and overnight parking. For multi-temperature compartments, identify the setpoints and equipment arrangement for each zone.

Separate transport requirements from cargo-process requirements. The traction battery and refrigeration unit may have distinct power sources or energy paths depending on the completed build. Do not assume the reefer draws from the traction pack—or that it does not. Obtain the body builder's electrical diagram for the exact order, and clarify operation during charging, loading, vehicle-off periods and faults.

Start with chassis data and keep body assumptions visible

The Dongfeng KT5M / KT5J catalogue guide lists 4×2 electric cargo references at 18 t GVW with 262 or 310 kWh battery choices and 150 kW rated / 270 kW peak motor output. It shows a 7,150 mm wheelbase reference with 7.7–9.8 m body lengths and a 5,000 mm wheelbase reference with 6.8–7.7 m body lengths. These are chassis and body-planning references; the refrigeration body, equipment mass, internal dimensions and auxiliary power must be confirmed separately.

Review the KT5M and KT5J cargo chassis guide. The listed body-length range does not mean every refrigerated body is compatible or approved.

Measure traction and refrigeration energy separately

Instrument a representative shift or obtain validated data from suppliers. Track distance, mass, speed, elevation, stops, traffic, ambient temperature, cab climate use, departure and return SOC, and energy delivered while charging. Separately log reefer run time, setpoint, temperature readings, door-open periods, pre-cooling, loading dwell and the unit's energy source or fuel use.

Keep time-series data where possible. Daily totals can hide extended loading with doors open or a warm high-ambient leg. Compare routes with similar cargo and stop patterns, and note whether the body was pre-cooled. Measure actual operation rather than borrowing an energy rate from a different body, insulation level, refrigeration unit or climate.

Build a route budget with distinct traction and auxiliary entries, charging and reserve. A useful framework is: shift energy equals measured traction energy plus measured refrigeration and other auxiliary energy during travel, stops and loading. This organizes observations; it does not supply missing values. Use the final vehicle's usable-energy information and preserve a reserve for detours, queues, charger issues and safe return.

Specify the cold body and refrigeration system together

Ask the body builder to document insulation, internal dimensions, door arrangement, partitions, refrigeration-unit model, control strategy, power source, operating modes and equipment mass. Confirm how installation changes tare, axle loads, centre of gravity, dimensions, rear overhang and access to service components. Ensure chassis and body suppliers agree on mountings, wiring, protection, diagnostics and responsibilities.

Set acceptance criteria for pull-down and temperature maintenance under representative conditions with a qualified refrigeration supplier and cargo owner. Consider loading procedures, partitions, door alarms, cleaning, drainage, airflow and pallet arrangement. Avoid precise temperature-performance claims unless they are specified and verified for the completed vehicle.

Operational discipline can reduce avoidable heat ingress: stage deliveries, minimize open-door dwell, coordinate dock appointments and train drivers on checks. These steps do not replace correct equipment sizing. Record late loading, repeated door openings and idle time so dispatch can separate route energy from process variability.

Fit charging to the cold-chain schedule

Map when the vehicle can connect: after return, during cleaning, loading, pre-cooling or a break. Confirm whether vehicle and refrigeration systems may operate in the required mode while charging and whether the site can supply both simultaneously. Obtain the ordered truck's charge curve, connector and protocol, charger output and reefer electrical interface.

Survey the depot with qualified electrical professionals. Check service capacity, transformer, protection, cable routing, bay placement, drainage and cleaning procedures. If several vehicles charge together, model arrival peaks and the energy needed before next dispatch. Define a contingency for delayed return or unavailable equipment.

Do not calculate guaranteed charge duration from nominal battery capacity. Charging depends on vehicle limits, charger, SOC, temperature and site conditions. If cargo must stay in its temperature band while parked, confirm the approved stationary power arrangement instead of assuming the traction battery powers refrigeration while plugged in.

Validate the complete cold-chain route

Run a representative pilot with the intended body, refrigeration unit, cargo profile, route, delivery sequence and charging site. Agree temperature measurement points and handling procedures with the cargo owner and refrigeration provider. Capture temperatures, door events, dwell, ambient conditions, energy, SOC, charging time, route completion and quality exceptions.

Test a demanding routine day, not only a low-stop demonstration. Keep actual event data separate from simulated late-arrival cases. Review whether the vehicle returns with the agreed reserve, cargo processes meet requirements and charging supports the next shift. Revise body, route or schedule assumptions before scaling if the evidence does not support them.

Electric refrigerated truck checklist

• Cargo temperature band, loading temperature, transit time and stop sequence.
• Body dimensions, insulation, compartments, doors and refrigeration specification.
• Written reefer power source for driving, loading, parking and charging.
• Completed mass, axle loads, payload calculation, drawings and market approval.
• Traction and auxiliary energy measured separately on representative shifts.
• Usable battery energy, reserve, charge curve, connector and charger fit.
• Depot survey, simultaneous fleet demand, cleaning and outage plan.
• Temperature monitoring, training, service roles and acceptance criteria.

Share cargo requirements, route, body drawing, door schedule, daily distance, payload, site power and charging window through the configuration enquiry page. DOE fleet planning guidance recommends considering routes, weather, auxiliary loads and charging access.

Frequently asked questions