#3200 · AI & Technology Tool

Delivery Robot Battery Runtime Calculator

Estimate a delivery robot's usable battery runtime and practical route range. Enter battery energy, reserve level, system efficiency, average power draw, travel speed, moving-time share, and charger specifications. Results include runtime, moving time, approximate travel distance, and recharge time for route and shift planning.

Calculator

Planning inputs
Wh
%
%
W
km/h
%
W
%

How to use this calculator

  1. Enter rated or measured battery energy in watt-hours.
  2. Choose a reserve state of charge and system efficiency.
  3. Add average total power draw during the representative duty cycle.
  4. Enter travel speed and the share of runtime spent moving.
  5. Add effective charger power and charging efficiency.

Formula

Usable energy = capacity × (1 − reserve) × system efficiency. Runtime = usable Wh ÷ average W. Moving time = runtime × moving share. Distance = moving time × average speed. Recharge time = usable Wh ÷ (charger W × charge efficiency).

What the result means

Runtime represents operation from full charge to the selected reserve under a constant average duty-cycle load. Distance is a route-planning estimate, not guaranteed geographic range.

Weather, gradients, stops, payload, wireless equipment, heating or cooling, and battery aging can materially change power use.

Example calculation

A 1,800 Wh battery with 20% reserve and 90% system efficiency provides 1,296 Wh. At 280 W average draw, runtime is 4.63 hours. With 70% moving time at 5 km/h, estimated distance is 16.2 km, and recharge takes 2.45 hours on a 600 W charger at 88% efficiency.

Tips for better results

  • Measure average draw on representative routes and weather conditions.
  • Include compute, sensors, communications, and cargo climate control in power demand.
  • Keep enough reserve for rerouting and safe return.
  • Reduce usable capacity to reflect battery aging.
  • Plan charging around route waves and limited dock availability.

Frequently asked questions

Why is travel distance lower than speed multiplied by total runtime?

The moving-share input removes time spent loading, waiting, handing off orders, stopped at crossings, or receiving remote assistance.

Should I enter nominal or usable battery capacity?

Use measured usable capacity when available. If you enter nominal capacity, reserve and efficiency adjustments estimate usable energy.

Does the recharge time include charging taper?

Only if the effective charger power already reflects taper and other losses. Use an observed average charging rate for better planning.

How does cold weather affect runtime?

Cold conditions can reduce available battery energy and raise heating or traction demand; reflect that with lower capacity or higher average power.

Can the distance result be used as a delivery radius?

Not directly. The distance is total travel, while a delivery radius must also account for return travel, route shape, stops, and service boundaries.

Inputs and units

InputUnitRole
Battery capacityWhUser-provided planning input.
Reserve charge%User-provided planning input.
System efficiency%User-provided planning input.
Average power drawWUser-provided planning input.
Average travel speedkm/hUser-provided planning input.
Moving share of runtime%User-provided planning input.
Charger powerWUser-provided planning input.
Charging efficiency%User-provided planning input.

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