Portable Power Station Runtime & Appliance Calculator

Power station

Enter the ratings printed in the manual or on the unit.

Battery Capacity

Total AC Continuous Output

Total AC Surge / Peak

Voltage Support

120V Continuous Limit

120V Surge Limit

Estimated AC Efficiency

Battery Reserve

Planning assumptions: 85% AC efficiency is not universal. A 120/240V rating also does not guarantee connector or appliance compatibility; systems may have per-leg, outlet, neutral, connector, or manufacturer-specific limits.

Appliances

Use measured energy when available for cycling or variable loads.

01Appliance name

VoltageRunning

Startup / Surge

Blank = running wattsHours Needed

Duty Cycle

Measured Energy

Overrides calculated energy

02Appliance name

VoltageRunning

Startup / Surge

Blank = running wattsHours Needed

Duty Cycle

Measured Energy

Overrides calculated energy

03Appliance name

VoltageRunning

Startup / Surge

Blank = running wattsHours Needed

Duty Cycle

Measured Energy

Overrides calculated energy

Measured Wh: especially useful for refrigerators, freezers, cycling appliances, and variable loads. It replaces Running Watts × Hours × Duty Cycle.

Solar replenishment

Estimate idealized energy recovery using peak-sun hours.

Solar Array Nameplate

Station Max Solar Input

Peak Sun Hours / Day

Solar-to-Battery Efficiency

YOUR POWER PLAN

Results

Electrical CompatibilityCompatible

Entered loads are within the listed voltage and inverter limits.

Battery PlanInsufficient battery for requested runtime

Your battery covers about 45.2% of the requested energy.

Total Running Load185 W

Estimated One-Appliance Startup Load935 WOne motor starts while other loads run

Estimated Usable Battery696 Wh

Energy Requested1,540 Wh1.54 kWh

Recommended Nominal Battery2,265 Wh2.26 kWh

Battery Plan Coverage45.2%

Runtime If All Loads Stay On Continuously3.8 hr

Continuous Output Headroom89.7%

Effective Solar Input400 W

Estimated Solar Energy Per Day1,280 Wh

Peak-Sun Hours to Replace Planned Usage5.7 hr

Peak-Sun Hours for Full Battery Recharge3.2 hr

Startup estimate: This assumes one motor or compressor starts while the other selected appliances are already running. Two motors starting simultaneously may require more surge capacity.

120V: 185W running / 935W startup240V: 0W running / 0W startup

Appliance	Status	Energy needed	Explanation
Refrigerator	Compatible	1,260 Wh	Within entered voltage and inverter limits.
Wi-Fi Router	Compatible	180 Wh	Within entered voltage and inverter limits.
LED Lights	Compatible	100 Wh	Within entered voltage and inverter limits.

Peak-sun hours describe equivalent full-strength solar production, not clock hours. Weather, shade, panel angle, temperature, and charge behavior affect actual recovery time.