Calculation methodology
Transparent calculations, separate compatibility decisions.
A large battery can still be incompatible with an appliance. Runtime is calculated only after output, surge, voltage, current, and connector requirements are checked.
Runtime estimate
average load W = running W × duty cycle + standby W × off-cycle share
AC runtime hours = usable Wh × inverter efficiency ÷ average load W
DC and USB estimates omit AC inverter efficiency and apply the documented conversion-path efficiency when known. Unknown factors use a disclosed default and are never presented as measured results.
Compatibility sequence
Continuous output
Pass when the station output at the required connector and voltage meets or exceeds the appliance running load.
Starting surge
Pass when documented surge output and allowed duration meet the appliance starting demand and duration.
Energy capacity
Estimate runtime from usable energy after conversion and environmental losses, divided by average load.
Connector fit
Confirm AC, regulated DC, USB-C, USB-A, or vehicle output plus voltage and current requirements.
Solar recharge
Cap expected array production at the station input voltage, current, and watt limits before charging losses.
Result labels
- Manufacturer claim
- A value reproduced from an official page or manual.
- Calculated estimate
- A result generated from visible inputs and assumptions.
- Measured result
- A documented test with equipment, conditions, and procedure.