AMR, AGV & Intralogistics Automation worked example

AMR Battery Charge Capacity Calculator at 68% charger uptime: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop charger uptime to 68%, then walk the calculation through step by step. Estimate available charged robot-hours from runtime per charge cycle, charge cycles, charger uptime, and battery health factor.

The inputs for this scenario

  • Robot runtime per charge cycle: 7.5 robot hr/cycle (held at the documented default)
  • Available charge cycles per day: 48 cycles/day (held at the documented default)
  • Charger uptime: 68 % (the input this scenario stresses; the baseline uses 95)
  • Battery health or charge acceptance: 92 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross charged robot-hours = robot runtime per charge cycle × available charge cycles.
  • Usable charged robot-hours works out to 225 robot hr/day at these inputs, and this is the headline figure for the scenario.
  • Gross charged robot-hours works out to 360 robot hr/day at these inputs.
  • Robot-hours lost to charger downtime works out to 115 robot hr/day at these inputs.
  • Robot-hours lost to battery derate works out to 19.58 robot hr/day at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where charger uptime sits at 95% and the headline result is 315 robot hr/day, this scenario comes in 28.42% below the baseline at 225 robot hr/day.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to charger uptime, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes charge cycles are evenly available and does not model queueing at shared chargers or temperature effects that vary battery acceptance hour to hour.

Results at a glance

  • Usable charged robot-hours: 225 robot hr/day (headline result)
  • Gross charged robot-hours: 360 robot hr/day
  • Robot-hours lost to charger downtime: 115 robot hr/day
  • Robot-hours lost to battery derate: 19.58 robot hr/day

Run it with your numbers

  • To rerun this with your own numbers, open the live AMR Battery Charge Capacity Calculator calculator, set charger uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.