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Generator vs power station selector

Choose customer power, a portable power station, an inverter generator or a split-load plan from your real mobile-detailing load and working constraints.

Model the equipment that runs at the same time, its largest extra start-up demand and the time it is actually powered. This chooses an operating direction; it does not approve a source or exact machine combination.

Operating constraints

Power-source weight, fuel and safe separation must fit the complete rig.
Count only permissioned supplies that are suitable for the actual load and environment.
Consider neighbours, early starts, indoor work and each customer site.
A running generator cannot stay in a vehicle or other enclosed or partly enclosed space.
Use the time and input power the exact battery can genuinely accept.

Measured load

W
Add only data-plate loads that may run together.
W
Enter the extra watts above running load for the most demanding start.
hours
Use actual trigger or powered time, not the full time spent at jobs.
%
A transparent allowance for comparison—not a manufacturer or safety rule.

Power plan

Inverter-generator shortlist

Ready for source-level comparison

The daily energy, output demand or limited recharge access makes fuelled generation the more realistic single-source direction—only because safe outdoor operation has been confirmed and quiet operation is not absolute.

Planning continuous output2,160 W
Planning peak output3,240 W
Modelled daily AC energy2,700 Wh
Planning usable battery energy3,240 Wh
The figures screen a category; they are not product approval. Confirm the exact source's continuous and peak ratings, usable energy, sockets, recharge limits, earthing arrangements, environment and every connected machine's instructions.
  1. 01

    Shortlist sources with at least 2160 W continuous output and 3240 W for the entered running-plus-start-up model. Then verify each appliance and source manual; the reserve is a planning allowance, not a standard.

  2. 02

    The load model uses 2700 Wh per working day before reserve. For batteries, compare usable AC energy—not only advertised capacity—and confirm that the planned recharge window can replace it.

  3. 03

    Write down which jobs genuinely have approved customer power and keep the independent plan workable without assuming a socket will be available.

  4. 04

    Any fuel-powered generator must operate outdoors, away from vehicles, doors, windows, vents and air intakes, with exhaust, fuel, weather, noise and manufacturer instructions controlled.

  5. 05

    Add source weight, cables, weather protection and secure transport to the payload and layout plan before buying.

Compare inverter generators on Amazon UKCompare outdoor power leads on Amazon UKSize the exact running and start-up load Test a battery's output and runtime
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. The price is unchanged for you. Search results are not endorsements or evidence that every item is suitable. Outside the UK, use the same specification checks with an appropriate local retailer.

Four separate limits

Power is more than one watt number.

A source can have enough stored energy and still trip when a motor starts. It can also carry the peak briefly but lack the continuous rating or daily energy needed to finish the route. Check each constraint separately.

  1. 01
    Simultaneous running watts

    Add only machines that operate together during the same service stage.

  2. 02
    Start-up demand

    Use the highest verified running-plus-start requirement, not a guessed universal multiplier.

  3. 03
    Daily watt-hours

    Multiply actual powered time by the working load before allowing for usable capacity and conversion losses.

  4. 04
    Recharge or refuel workflow

    The next working day depends on restoring the energy safely and predictably.

The operating site decides

Do not buy around an unsafe assumption.

  • Customer mains: permission, circuit capacity, RCD protection, plugs, leads and the wet-work environment all need checking.
  • Battery system: compare continuous output, peak output, usable watt-hours, recharge input, temperature limits and transport weight.
  • Generator: operate outdoors and away from vehicles, openings and air intakes; plan exhaust, fuel, weather, security and noise before purchase.
  • Split load: separate stages and sources deliberately. Never combine supplies unless the exact equipment and a competent design permit it.

Use the generator sizing calculator for the complete load list, then test a candidate battery in the power-station runtime calculator.

Primary references and specification examplesHSE — electrically powered work equipment HSE — RCD and outdoor or wet-work guidance CDC/NIOSH — carbon-monoxide hazards at work Honda — rated versus maximum generator output EcoFlow — capacity, continuous output and surge example
Battery station is the working direction?

Move from the category decision to six exact UK models, preserving normal output, special-mode wording, nameplate energy, weight and recharge as separate checks.

Compare six exact power stations