By using BackupCalc you agree to these terms.
Estimates only
Our calculators and guides give estimates for planning. Real results depend on your specific equipment, its age and condition, temperature and how you use it. Appliance and power station figures are typical values or manufacturers' published specifications, which can change without notice. Always check your equipment's labels and manuals before relying on a result.
Not professional advice
- Electrical work: nothing on this site is a substitute for a licensed electrician. Never connect a power station, battery or generator to home wiring through an outlet ("backfeeding"). It can kill utility workers and start fires. Use a properly installed transfer switch or inlet.
- Medical devices: if you rely on powered medical equipment, plan your backup power with your doctor or equipment supplier. Do not rely solely on our estimates.
- Safety: never run fuel-burning generators or heaters indoors.
No warranty
The site is provided "as is", without warranties of any kind. To the extent permitted by law, BackupCalc is not liable for any loss or damage arising from use of the site or reliance on its results.
Advertising and links
The site may show ads and link to other websites. We are not responsible for their content. If we ever use affiliate links, we'll label them clearly; they never change our calculations.
Trademarks
Brand and product names (such as EcoFlow, Jackery, Anker and Bluetti) belong to their owners and are used only to identify products. BackupCalc is independent and not affiliated with or endorsed by any manufacturer.
Changes
We may update these terms. The date at the top shows when they last changed.