Payment Terminal & Retail Hardware worked example

Battery Runtime with terminal charging and test connected load of 30 kW: a worked example in payment terminal & retail hardware

Push terminal charging and test connected load up to 30 kW and the picture changes. This example computes every intermediate figure at that operating point. Use it when battery runtime in payment terminal and retail hardware is being quoted and energy is a real chunk of the payment terminal and retail hardware cost stack.

The inputs for this scenario

  • Terminal charging/test connected load: 30 kW (raised for this scenario; the documented default is 12)
  • Battery test runtime: 8 hr (unchanged)
  • Blended electricity rate: 0.12 $ / kWh (unchanged)
  • Terminals processed during runtime: 1,000 units (unchanged)

Working through the calculation

  • Applying the documented formula (Total battery runtime energy cost = battery runtime connected load × battery runtime runtime × blended electricity rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 240 kWh for battery runtime energy used, the number this scenario is built around.
  • At this operating point the engine returns 28.8 $ for total battery runtime energy cost.
  • At this operating point the engine returns 0.03 $ / piece for energy cost per kwh.
  • At this operating point the engine returns 3.6 $ / hr for hourly battery runtime energy cost.

How this compares with the baseline

  • Against the tool's baseline example, where terminal charging and test connected load sits at 12 kW and the headline result is 96 kWh, this scenario comes in 150% above the baseline at 240 kWh.
  • It computes energy used (kWh), total energy cost, cost per unit processed, and hourly energy cost from connected load, runtime, rate, and unit count. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Battery runtime energy used: 240 kWh (headline result)
  • Total battery runtime energy cost: 28.8 $
  • Energy cost per kWh: 0.03 $ / piece
  • Hourly battery runtime energy cost: 3.6 $ / hr

Run it with your numbers

  • Every input above is editable in the live Battery Runtime calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.