Terms of use
Updated
Portable Power Calculator provides educational planning tools and source-linked product information. Please use the results within the limits described here.
Planning estimates
Results depend on the values you enter and the assumptions shown by the tool. Efficiency, battery condition, temperature, controls, and changing loads can cause actual performance to differ. An illustrative preset is a way to learn the calculator, not a measurement of your equipment.
A capacity estimate does not by itself establish continuous output, startup support, or connection compatibility. Read the result messages and the methodology before treating an estimate as a purchase requirement.
Use the equipment manufacturer's instructions
Verify the exact product variant, operating limits, voltage, frequency, ports, protocols, and cables against the relevant manuals. The website does not approve an electrical installation or replace manufacturer instructions or qualified professional advice.
Do not rely on these tools as the sole basis for medical or life-support power, guaranteed outage coverage, food storage temperatures, building wiring, transfer-switch work, or solar-array wiring. Those needs involve requirements beyond this model.
Product information and external links
Profiles describe specifications from the sources and dates shown. They are not hands-on reviews, offers for sale, or promises of availability. Specifications, product variants, included accessories, prices, and warranty terms can change; confirm the current terms with the manufacturer or seller.
The site does not process purchases or provide a seller's returns, warranty, or customer-support service. An external link does not make the calculator's estimate a performance guarantee for that product.
Your plans and shared information
You choose the inputs, assumptions, and information included in a saved or shared plan. Keep a separate copy of anything important: browser storage can be cleared or unavailable, and the site does not provide a cloud backup. Shared links contain readable plan data and should not include sensitive information. See the privacy notice.
Availability and corrections
The site may be updated, changed, or temporarily unavailable. Calculator changes can cause a previously shared set of inputs to produce a different estimate; shared links are recalculated using the current method. We do not promise uninterrupted access, error-free information, or a particular real-world result.
Report a reproducible error or a sourced correction through the contact page. These terms do not attempt to exclude rights or protections that applicable law does not allow to be excluded.