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Solar panel listings shout their wattage: 100W, 200W, 400W. But a 100W panel rarely produces 100W, and the Starlink Mini needs energy around the clock, not just at noon. Choosing the right panel size means working out how much energy you use per day, how much sun you get where you are, and how much a real panel delivers. This guide gives you a simple method and worked examples for typical Mini usage, so you buy enough panel without hauling more than you need.
Step 1: daily energy
Multiply the Mini's draw by the hours you use it. Starlink's figure is 25 to 40W on average. Add any other devices you will charge from the same system, such as laptops and phones.
| Use per day | Mini at 30W | Mini at 40W |
|---|---|---|
| 4 hours | 120Wh | 160Wh |
| 8 hours | 240Wh | 320Wh |
| 12 hours | 360Wh | 480Wh |
| 24 hours | 720Wh | 960Wh |
See our power consumption guide for what makes the Mini draw more or less.
Step 2: peak sun hours
Peak sun hours are the equivalent number of hours of full-strength sunlight your location gets in a day. They vary by latitude, season and weather. Sunny regions in summer can see six or more; northern winters can be two or less. Free solar resource maps from national renewable energy agencies give monthly figures for your location. Always size for the worst month you plan to use the system.
Step 3: real-world losses
A panel's rating is measured in lab conditions. In the field, heat, angle, dust, wiring and charge controller losses reduce output. Portable folding panels lying flat on the ground lose more than a well-angled rigid panel. A practical rule is to expect around 60 to 75 percent of the rated output during peak sun hours.
Step 4: the calculation
Panel watts needed = daily Wh ÷ peak sun hours ÷ efficiency factor.
| Daily use | Daily Wh (40W) | 5 sun hours, 70% | 3 sun hours, 70% |
|---|---|---|---|
| 4 hours | 160Wh | About 46W | About 76W |
| 8 hours | 320Wh | About 91W | About 152W |
| 12 hours | 480Wh | About 137W | About 229W |
| 24 hours | 960Wh | About 274W | About 457W |
Round up to the next common panel size. These are planning estimates; local weather and shading will change them.
Panel sizes in practice
- 60 to 100W: part-day use in good sun, or topping up a Mini battery during the day.
- 100 to 200W: a working day of use in good sun, with a battery for the evening.
- 200 to 400W: full-day use or poorer sun.
- 400W and up: 24-hour use or winter off-grid sites.
Matching the panel to your battery
A panel is only useful if your battery can accept its output. Small Mini packs have limited solar inputs; larger power stations accept more. Check the input voltage range as well as the wattage.
| Product | Key specs | Link |
|---|---|---|
| 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 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) |
| 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.
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
BigBlue states a DC input of 15 to 30V that accepts solar, which suits a single small 12V-class panel whose open-circuit voltage falls within that range. Check your panel's open-circuit voltage first.
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 recharges from DC, magnetic DC or USB-C. For solar, a panel with a 100W USB-C PD output is one route; check PeakDo's input limits before connecting a raw panel.
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
Recharges over USB-C PD, up to 100W when enabled in the app. Pair it with a panel or controller that has a USB-C PD output.
For a station-based system, see our complete solar setup guide.
Battery size alongside the panel
Solar only works in daylight, so for evening and night use you need storage. A simple rule is to carry enough battery for the hours of use after sunset, plus a day's reserve for cloud. Our power station runtime guide helps you size it. Running without a battery is possible in some cases; see our direct solar guide for the trade-offs.
Portable or fixed panels?
| Type | Pros | Cons |
|---|---|---|
| Folding portable | Packs small, can be angled at the sun | Lower output per watt rated; must be set up |
| Rigid on roof | Always ready, durable | Fixed angle, adds weight and height |
| Flexible on roof | Low profile, light | Runs hot, often shorter lifespan |
A folding panel moved to follow the sun two or three times a day can gain noticeably over one left flat, which lets you carry a smaller panel.
Seasons and latitude
A setup that runs the Mini all day in July may manage only a few hours in December. If you will use the Mini year-round, size for winter or plan a backup charging source such as the vehicle alternator or a mains hookup. Cold also reduces battery capacity, so winter needs more of both. Our cold weather guide explains why.
FAQ
Can a 100W solar panel run a Starlink Mini?
During good sun, a 100W panel can often cover the Mini's draw. To run it into the evening, you also need a battery.
What size panel for 24/7 Starlink Mini use?
Usually 300W or more, plus a battery of several hundred watt-hours, depending on your sun.
Do I need a charge controller?
Most power stations and some Mini packs have one built in. Separate batteries need one.
Are folding panels as good as rigid ones?
Watt for watt they often produce a little less, but they can be aimed at the sun.
Does winter need a bigger panel?
Yes, fewer sun hours and a lower sun angle mean you need more panel for the same energy.