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When the grid drops, the fibre box and the cell tower down the road often go with it. A Starlink Mini can keep a household online during an outage, but only if its power never blinks. The Mini restarts whenever its supply is interrupted, and a restart costs you a few minutes of searching for satellites. This guide shows how to build a simple uninterruptible setup for a Mini at home, how much battery you need for a typical outage, and which switchover traps to avoid.
Why a short blink matters
Most home electronics shrug off a half-second dip. The Mini does not. If its input drops out, even briefly, it reboots, re-acquires satellites and rebuilds its Wi-Fi network. Owners typically see a few minutes of downtime each time. During a storm with repeated flickers, that can mean almost no usable connection, even though the dish itself is fine. The goal of a backup setup is therefore not just stored energy but a seamless handover.
Three ways to bridge an outage
| Approach | How it works | Efficiency | Watch out for |
|---|---|---|---|
| Computer-style UPS | Wall supply plugs into an AC UPS; UPS battery takes over on outage | Lower: DC battery to AC to the Mini's adapter back to DC | Small UPS units may only last minutes; fan and beeping |
| DC battery with pass-through | Wall charger feeds a battery; the battery powers the Mini continuously | Better: no AC inversion | Some packs briefly cut output when the charger is unplugged or reconnected |
| Portable power station | Station sits on mains and feeds the Mini over 12V or 100W USB-C | Good, plus large capacity | Check the station's stated switchover time and whether it is a true UPS mode |
For most Mini owners the second or third option wins. The dish already runs on DC, so feeding it from a battery avoids two conversion steps. A small computer UPS is fine if you already own one and outages are short.
How much battery do you need?
Starlink lists the Mini's average power use as 25 to 40W. Your router is built in, so that figure covers the whole internet setup, not just the dish. Add any extra devices you want to keep running, such as a mesh node or a laptop charger, then multiply by the hours you want to cover.
| Outage length | Energy at 25W | Energy at 40W | Battery class that covers it |
|---|---|---|---|
| 1 hour | 25Wh | 40Wh | Any Mini-capable 99Wh pack |
| 3 hours | 75Wh | 120Wh | 99Wh pack for light use; small power station for calls |
| 8 hours | 200Wh | 320Wh | Power station of roughly 300 to 500Wh |
| 24 hours | 600Wh | 960Wh | Large station, or a station plus solar |
Plan to get about 80 to 90 percent of a battery's rated capacity as usable energy, because conversion losses eat the rest. Our power bank runtime guide walks through that maths in more detail.
Batteries that suit a desk-side backup
For short outages, a battery built for the Mini is the tidiest option. All three below are 99Wh packs that state pass-through support on their listings. Pass-through means the pack can charge and power the Mini at the same time, which is what a backup role needs. None of the listings promises a zero-gap handover, so test yours.
| Product | Key specs | Link |
|---|---|---|
| PeakDo LinkPower 2 Starlink Mini Battery Pack (99Wh) | 99Wh (27,500mAh); listing claims up to 5 h at a 20W load; recharges via DC, magnetic DC or USB-C (up to 100W via software); USB-C output; pass-through and bypass power; app monitoring; partly metal housing; IP65; 1/4 in. tripod mount | Check price on Amazon (opens in a new tab) |
| BigBlue POWAFREE 3 Starlink Mini Battery Pack (99Wh) | 99Wh (18V, 5,500mAh; eq. 27,500mAh at 3.6V); listing says over 4 h for Starlink Mini; USB-C up to 100W output and 65W input; recharge via USB-C or DC5521 including 15-30V solar; pass-through; built-in kickstand; LCD with runtime estimate; 1.47 lb (668 g); 18-month warranty | Check price on Amazon (opens in a new tab) |
| PeakDo LinkPower 1 Starlink Mini Battery Pack (99Wh) | 99Wh (27,500mAh); snap-on fit for Starlink Mini only; listing claims up to 4.5 h runtime; USB-C PD input up to 100W (65W by default, 100W via app), 65W USB-C output; pass-through charging; LCD and app; IP65; 1/4 in. tripod hole; 1.42 lb; includes short DC cable and USB-C cable | Check price on Amazon (opens in a new tab) |
Specs are from manufacturer and retailer listings and can change between versions; check the listing before you buy. We don't show prices because they change often; the button shows the current price on Amazon.
PeakDo LinkPower 2 Starlink Mini Battery Pack (99Wh)
99Wh (27,500mAh); listing claims up to 5 h at a 20W load; recharges via DC, magnetic DC or USB-C (up to 100W via software); USB-C output; pass-through and bypass power; app monitoring; partly metal housing; IP65; 1/4 in. tripod mount
Pros
- Three ways to recharge, including magnetic DC for vehicles
- Bypass mode can feed the Mini directly from external power
- Metal heat-sink housing
Cons
- USB-C input is limited to 28V; PeakDo warns not to use the 30V Starlink Mini adapter through a DC-to-USB-C adapter
- Runtime claim is at a light 20W load
The LinkPower 2 stands out for backup duty because PeakDo describes a bypass mode that feeds the Mini directly from external power. In principle that keeps the battery as a reserve rather than cycling it constantly. Note PeakDo's own warning about the 28V limit on its USB-C input.
BigBlue POWAFREE 3 Starlink Mini Battery Pack (99Wh)
99Wh (18V, 5,500mAh; eq. 27,500mAh at 3.6V); listing says over 4 h for Starlink Mini; USB-C up to 100W output and 65W input; recharge via USB-C or DC5521 including 15-30V solar; pass-through; built-in kickstand; LCD with runtime estimate; 1.47 lb (668 g); 18-month warranty
Pros
- Accepts 15-30V solar input directly
- Built-in kickstand stands the Mini upright
- Display shows estimated remaining runtime
Cons
- USB-C input is 65W, slower than 100W rivals
- Designed around the Mini, less useful as a general power bank
The POWAFREE 3's runtime readout is useful during an outage, because you can see roughly how long you have left rather than guessing from a percentage.
PeakDo LinkPower 1 Starlink Mini Battery Pack (99Wh)
99Wh (27,500mAh); snap-on fit for Starlink Mini only; listing claims up to 4.5 h runtime; USB-C PD input up to 100W (65W by default, 100W via app), 65W USB-C output; pass-through charging; LCD and app; IP65; 1/4 in. tripod hole; 1.42 lb; includes short DC cable and USB-C cable
Pros
- Clips onto the Mini, no loose cables
- Powers the Mini over its DC lead, so no 100W USB-C needed
- 99Wh stays under the common 100Wh airline limit
Cons
- Fits Starlink Mini only
- 100W USB-C input must be enabled in the app
Setting it up step by step
- Pick the spot. The Mini still needs a clear view of the sky. A backup battery is pointless if the dish is in a spot that loses signal in storms. A window ledge or balcony rail that already works is ideal.
- Put the battery in the path permanently. Wall supply into the battery, battery into the Mini. Do not plan to plug the battery in after the lights go out; the reboot happens at the moment of the cut.
- Use the right ports. If the battery feeds the Mini over USB-C, the port must deliver 100W at 20V/5A. Starlink says 65W or less will not work. A DC barrel output avoids that requirement.
- Simulate an outage. Switch off the wall socket while you watch the Starlink app. If the connection survives, you have a working setup. If the dish restarts, the pack is not switching seamlessly.
- Keep the router side alive too. If you run a separate mesh system or switch from the Mini's Ethernet port, it needs backup power as well, or the household loses Wi-Fi even though the dish stays up.
When a computer UPS makes sense
An AC UPS is the right choice if you want one box to protect several things at once, for example the Mini's power supply, a modem for a backup line, and a small network switch. The trade-off is efficiency. A UPS battery stores DC, inverts it to AC for the Mini's wall adapter, and the adapter converts it back to DC. Each step wastes energy, so a UPS with a given capacity runs the Mini for noticeably less time than a DC battery of the same size. Many small UPS units are designed to give a desktop computer a few minutes to shut down, not hours of runtime, so read the runtime chart for a 30 to 40W load before you rely on one.
Longer outages and solar
If your outages last a day or more, the battery has to be refilled. A power station with a solar input can be topped up from a folding panel on a balcony or in the yard. Our Starlink Mini solar setup guide covers how big a panel needs to be and how to wire it safely. A car can also refill a station while you drive, which is useful during multi-day storm recovery.
Safety in a home setting
Do not daisy-chain several power banks, or feed a pack from a charger rated above what the maker allows. Keep the Mini's original wall supply indoors; Starlink rates its power supply and router for indoor temperatures only.
FAQ
Will a Starlink Mini reboot when the power goes out?
Yes, if it is plugged straight into the wall. Any interruption to its supply causes a restart. Putting a battery with pass-through between the wall and the dish avoids that.
Can I use any UPS with a Starlink Mini?
Any UPS that can supply the Mini's wall adapter will work in principle, but runtime varies a lot. Check the maker's runtime chart at roughly 40W, and expect lower runtime than a DC battery of similar capacity.
How long will a 99Wh battery keep the internet on?
Roughly two to three and a half hours, depending on how hard you use the connection. Light browsing sits near the lower draw figure, video calls near the higher one.
Is it safe to leave a power bank plugged in permanently?
Some packs are designed for it and some are not. Read the maker's manual. If it does not mention continuous pass-through use, assume it is not designed for months on a charger.
Does the Mini need its own backup if my router has one?
Yes. The Mini has its router built in, so the dish is the internet connection. Backing up only a separate mesh system leaves you with Wi-Fi but no internet.