How Long Will a Goal Zero Yeti 300 Run a Pellet Stove

The checks behind this answer

Stored energy is the final check, not the first. Voltage, continuous output, and startup demand must clear before runtime means anything. Missing published evidence stays marked unverified instead of being treated as a pass.

How the number is built

A battery holds back some of its rated capacity, and converting to household AC costs more on top. Of the 296.96Wh rated here, roughly 235Wh reaches the outlet under a conservative planning model.

That energy meets an average load of 121W, which applies a 80% duty cycle to a 150W running draw. Holding back a 20% reserve for battery age, cold, and a longer outage leaves 1.6 hours. These are calculations, not measurements from a test.

What we could not verify

These gaps are in the published evidence, not in the arithmetic. Each one is a reason to check before you depend on this pairing.

• Neither manufacturer publishes how long the surge is held, so the margin above continuous output cannot be verified against a duration.

Before you rely on this

These limits decide whether this appliance belongs on a portable battery at all.

• A pellet stove needs power to stop safely, not only to keep producing heat. The combustion blower must keep moving exhaust while the fire dies down.
• Follow the backup method your stove manufacturer approves. Some manufacturers treat a standard UPS as a safe-shutdown device only, not a way to keep heating.
• Most pellet stove control boards require a pure sine wave supply.

Replace our assumptions with your own

The ignition cycle is short but it is the highest load the stove presents. Sizing from the steady blower draw alone will underestimate what the stove needs at the moment it lights.

Meter a complete cycle from cold ignition through steady heating, if your stove manufacturer permits metering. Record the peak as well as the average.