News

Starlink adds a Test Max Power button to check a power setup at full draw

• Firmware and app
• Primary source
• Background
• Independent, not affiliated with SpaceX

Event date

Jun 3, 2025

Effective

Not stated by Starlink

Published

Oct 6, 2026

Last updated

Oct 6, 2026

Background. This event is more than 90 days old. We keep it for reference; it is not current news.

What changed at a glance

What changed

Starlink published a support article titled “What is the Test Max Power button?” Starlink’s support system records its creation date as June 3, 2025. The article describes a mode that pushes a Starlink to its highest power draw on purpose, so you can see whether the power system feeding it holds up. In Starlink’s words:

“Test Max Power mode elevates your Starlink to its highest power consumption setting.”

According to the article, the mode is “primarily used to verify proper installation and assess the impact on power supplies.” Starlink says it is especially useful for aviation customers after installing a terminal on an aircraft, to find problems in the aircraft’s power system by temporarily maximizing the draw. The button is located on the service line page, and Starlink says it lets customers run these tests themselves.

Who it affects

Starlink’s article is written with aviation customers in mind, but the problem it solves is the one battery, 12 V and solar users have: a setup that works at idle and fails when the dish works hard. Typical failure points are a thin or long 12 V cable that sags under load, a power bank or USB-C cable that can’t hold its rated output, a small inverter, or a car accessory socket on a low fuse.

The article doesn’t say which Starlink kits or plans show the button, or whether it appears for consumer accounts with a Mini. If you don’t see it on your service line page, it may not be offered for your kit or account type. We haven’t been able to confirm either way.

What it means for your power setup

Peak draw is what sizes a power path. Starlink’s spec sheet rates the Mini’s input at 60 W maximum, with average consumption of up to 40 W; those values render from our data file below, with their sources. Owners’ reports show short higher draws at boot. A power source that’s marginal at the peak is the classic cause of a Mini that reboots, drops out in cold weather when snow melt kicks in, or won’t start from a battery at all.

If the button is available to you, it gives a controlled way to test the worst case while you’re watching, instead of discovering it on a trip. Use it with the same cable, adapter and battery you’ll actually use in the field. Our watts table lists Starlink’s official ranges and dated community readings; the 12 V guide covers wire gauge and voltage drop; and the calculator shows runtime at the high end of the range.

What to do

1. Look on your service line page in your Starlink account for a “Test Max Power” button. The article names the location as the service line page.
2. If it’s there, connect the dish through your real field setup (battery, cable, adapter) and run the test while watching for reboots, low-voltage alerts or a hot adapter.
3. If the setup fails, fix the weakest link first: a shorter or thicker cable, a higher input voltage, or a source with more headroom. Starlink’s own Mini setup guide gives the same advice for 12 V problems.
4. Don’t leave the dish in a maximum-power state on a small battery longer than the test needs.

What stays the same

• Starlink’s published power ranges for the Mini and Standard dish: unchanged by this article.
• Our runtime and sizing math: unchanged.

What we don’t know yet

• Which kits, plans and account types show the button. The article doesn’t say.
• How long the test runs and what the dish draws during it. Starlink doesn’t publish a figure, so we don’t give one.
• Whether the mode is in the Starlink app as well as on the website. The article mentions only the service line page.