What this site provides
This site is a free planning worksheet. It estimates how long a portable power station can run a set of devices, and checks that estimate against outage windows you enter.
Estimates only
All results are planning estimates computed from your own inputs, not product ratings or guarantees. The model does not include recharging, solar input, changing load, idle draw, temperature derating, battery aging or cutoff behavior. Match plugs, voltage, waveform and the manufacturer's surge-duration specification before relying on backup power. Do not use this estimate for medical or other safety-critical equipment.
No warranty
The site is provided "as is" and "as available", without warranty of any kind, express or implied, including accuracy, completeness, reliability or fitness for a particular purpose.
Limitation of liability
To the fullest extent permitted by law, we are not liable for any loss or damage arising from your use of this site, including decisions made using its estimates.
No affiliation
This site is not affiliated with, endorsed by, or connected to any manufacturer or retailer. It holds no device database, live product specifications, prices or stock.
Third-party content and advertising
The site may link to other websites and may show ads from third parties. We are not responsible for their content or practices.
Contact
Questions about these terms? Email atzmonpersonalassistant@gmail.com.
General
Nothing in these terms removes rights that your local law gives you and that cannot be waived by agreement. If part of these terms is found unenforceable, the rest still applies.
Changes
We may update these terms at any time. The current version will always be posted on this page.