Build your own energy budget

What size battery does your trip need?

Add your devices and the time between recharges. Start with the illustrative defaults, then replace them with your measured or manufacturer-supported values.

This estimates energy capacity only. It does not validate output limits, startup surges or device compatibility.

Defaults are illustrative assumptions, not device specifications.
Device	Average load (W)	Daily use (hours)
Device 1	Average watts	Hours per day
Device 2	Average watts	Hours per day
Device 3	Average watts	Hours per day
Device 4	Average watts	Hours per day

Days between full rechargesAssumed usable energy (%)Chosen planning buffer (%)

Turn the result into a shortlist

Use the nominal capacity estimate as a starting point, then check simultaneous watts, startup needs, voltage and connectors. The defaults do not promise enough energy for every trip. A cycling refrigerator needs a credible average or measured daily energy; its startup draw must also be checked separately.

If your result is well above the capacities on our shortlist, investigate larger or supported expansion options. Do not assume a higher watt rating means a larger energy store.

Compare station capacities →Read the camping guide

Inputs remain in your browser. With optional analytics accepted, we record that the planner was used, not the names or numbers entered.