Power station runtime calculator
Power station runtime calculator – find out how long your devices will run
Looking for a quick and accurate way to find out how long Power station will power your devices? Use our free power-station runtime calculator, which estimates in seconds how long devices will run from an energy-storage unit (power station).
Energy-storage device runtime calculator
How does the power-station runtime calculator work?
Our calculator analyses three key inputs:
Energy-storage capacity (in Wh – watt-hours),
Continuous power of the station (how many watts it can supply continuously),
Device power, that you want to power (e.g. a fridge, TV, laptop, fan, etc.).
On this basis, we calculate real-world device runtime, accounting for typical energy losses (e.g. inverter and heat – approximately 10%).
Why should you know a power station’s runtime?
Understanding power-station runtime is essential for informed, safe use of electrical devices when the grid is unavailable. With this knowledge, you can:
Prevent device overload
Every power station has a specified continuous output that must not be exceeded. Knowing its capacity helps ensure that connected equipment does not overload the system or cause a failure. This is especially important for higher-demand appliances such as fridges, kettles and power tools.
better plan its use outdoors, at a campsite or during a power cut
Knowing how many hours devices can run on one full battery helps you plan the day effectively – outdoors and during a home power cut. This improves safety and comfort because a sudden lack of energy will not catch you out.
Select the right power station for your individual needs
Do you need a station for remote work, garden lighting or emergency power for a fridge? Understanding actual demand and device runtime helps you choose an energy store with the right capacity and output. This in turn delivers savings and better energy efficiency.
With our calculator, there is no need to perform complex calculations yourself. Simply enter the data and the tool will show a precise, practical runtime for your devices.
Frequently asked questions (FAQ):
1. What power-station capacity should you choose?
The right capacity depends on the number and type of devices you want to power.
For small devices (chargers, smartphones, LED lights), you only need a station with a capacity of 200–500Wh.
For household devices such as laptops, routers and televisions, consider 500–1000 Wh.
If you plan to power a fridge, pump or power tools, or need energy for longer periods, look for 1000–2000Wh or more.
A good starting point is to add up the power of all devices and multiply it by their operating time. Our power-station runtime calculator was created for exactly this purpose.
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2. Whether Power station power a device whose demand exceeds its continuous output?
No. Continuous power (continuous power) specifies the maximum load the station can sustain over an extended period.
If a device draws more power than the station can provide, the protection system will cut the power, to prevent damage.
Always check the rated power of your equipment and compare it with the station’s specifications.
3. What is surge power (peak power), and should I use it as a guide?
Surge (peak) power is the maximum power the station can deliver for a very short time (usually 1–5 seconds), for example when starting a fridge, pump or motor-driven tool.
Do not confuse it with continuous power – the station cannot sustain this output for long. Therefore the most important parameter when estimating runtime is continuous power.
4. Does the Wh calculator account for energy losses?
Yes, the calculator assumes a default an energy-conversion loss of approximately 10%, reflecting real-world operating conditions.
These losses arise from inverter operation, temperature increases and losses during cell charging and discharging.
This makes the result closer to the actual runtime.
5. Can I charge the station and power devices simultaneously (pass-through charging)?
It depends on the specific power-station model.
Many modern power stations offer a simultaneous charging and discharging (pass-through), but not all of them.
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6. Does the energy-storage runtime calculator also work for solar panels?
Not directly – the calculator does not account for the process of charging the power station from solar panels, only its capacity and consumption by connected devices.
To estimate solar charging, consider sunlight conditions, panel power (W), charger efficiency and operating time.