Portable Power Station Calculators
Calculate your backup power before you buy. Use these free portable power station calculators to estimate runtime, battery capacity, solar recharge time and backup power needs before choosing a solar generator or battery backup system.
These calculators are designed for planning. Results are estimates based on typical device wattage, published specifications and simple efficiency assumptions. Actual results may vary based on device behavior, battery age, temperature, inverter losses, solar conditions and manufacturer limits.
Portable Power Station Runtime Calculator
Estimate how long a power station may run phones, laptops, routers, TVs, fans, CPAP machines and other devices.
Calculate runtime →CPAP Battery Runtime Calculator
Estimate CPAP backup time and nights of use from battery capacity, CPAP wattage and output efficiency.
Calculate CPAP backup →Refrigerator Backup Time Calculator
Estimate refrigerator or freezer backup time using battery capacity, running watts, duty cycle and startup surge planning.
Calculate fridge backup →Solar Charging Time Calculator
Estimate solar recharge time from battery size, panel wattage, real-world efficiency and peak sun hours.
Calculate solar charging →Watts to Watt-Hours Calculator
Convert watts and hours into watt-hours, or estimate battery runtime from power station capacity.
Convert watts to Wh →Which Calculator Should You Use?
| Question | Best calculator |
|---|---|
| How long will a power station run my device? | Portable Power Station Runtime Calculator |
| How long can a battery run my CPAP? | CPAP Battery Runtime Calculator |
| Can a power station run my refrigerator? | Refrigerator Backup Time Calculator |
| How long will solar panels take to recharge my battery? | Solar Charging Time Calculator |
| How many watt-hours does a device use? | Watts to Watt-Hours Calculator |
How to Plan Backup Power
Start with your essential devices. Find their typical wattage, estimate how many hours you need them to run and calculate total watt-hours. Then account for efficiency losses, startup surge and reserve capacity. A good backup power plan usually has a safety margin instead of relying on perfect conditions.
- Step 1: List the devices you need during an outage or trip.
- Step 2: Estimate wattage for each device.
- Step 3: Multiply watts by hours to estimate watt-hours.
- Step 4: Check inverter losses, solar input limits and startup surge.
- Step 5: Choose a power station with enough capacity and output rating.
Important Planning Notes
PowerStationCalc.com calculators provide educational estimates. They do not guarantee runtime or safety. For medical devices, follow manufacturer guidance and qualified professional advice. For refrigerators and freezers, use appliance thermometers and follow official food-safety guidance. For solar charging, always check the voltage, current and connector limits of your power station before connecting panels.
FAQ
Are these calculator results exact?
No. They are estimates for planning. Actual runtime and charging results may vary based on device wattage, battery condition, temperature, inverter losses, solar conditions and published specifications.
What information do I need before using the calculators?
The most useful numbers are battery capacity in watt-hours, device wattage, expected runtime hours, solar panel wattage and the power station’s maximum input and output ratings.
Can these calculators help before buying a power station?
Yes. They are designed to help estimate your backup power needs before buying, so you can compare battery capacity, output ratings and solar recharge expectations more realistically.
PowerStationCalc.com provides planning calculators and educational content. Actual results may vary.