EcoFlow’s RAPID Pro X and Anker’s Prime Power Bank (26K, 300W) are both aimed at the same buyer: someone who wants laptop-class power in a bag-sized battery that still goes on a plane. Each is rated for 300W total output and two-way 140W USB-C, and each sits just under the 100Wh carry-on line. EcoFlow lists 99.54Wh and Anker 99.75Wh. The differences show up in recharge speed, port layout, extras and price. I compared both makers’ spec sheets and FAQs to see where each one comes out ahead.
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Which one fits you
| You want… | Better pick |
|---|---|
| The fastest possible recharge | EcoFlow RAPID Pro X (0–80% in 20 min on its 320W station) |
| Fastest recharge from standard USB-C chargers | Close: EcoFlow lists 80% in 26 min at 280W; Anker lists 80% in 40 min at 250W |
| A USB-A port | Anker Prime 26K |
| A built-in cable | EcoFlow RAPID Pro X (included 60 cm retractable 140W magnetic block) |
| Lighter and slimmer | Anker Prime 26K (600 g vs 700 g) |
| Lower price on the maker’s store | Anker Prime 26K ($229.99 vs $249.99, Oct. 17, 2026) |
| Bigger screen | EcoFlow RAPID Pro X (3.9-inch LCD) |
EcoFlow RAPID Pro X on Amazon | Anker Prime 26K 300W on Amazon
Spec sheet, side by side
EcoFlow’s figures come from its U.S. product page and spec table, plus its official Amazon listing where noted. Anker’s come from its Prime 26K product page, which I covered in my Anker Prime 26K 300W review.
| Spec | EcoFlow RAPID Pro X | Anker Prime 26K 300W |
|---|---|---|
| Capacity | 27,650mAh (99.54Wh) | 26,250mAh (99.75Wh) |
| Total output | 300W | 300W |
| USB-C outputs | C1 140W; C2/C3 65W each | 2 x 140W |
| Extra port | Magnetic block with 60 cm retractable 140W USB-C cable (included) | USB-A 22.5W |
| Devices at once | 4 | 3 |
| Max input | 320W (with RAPID Pro 320W station); 280W over USB | 250W over two USB-C ports; 150W charging base |
| Recharge claim | 0–80% in 20 min (320W station); 80% in 26 min at 280W multi-port, 40 min at 140W (Amazon listing) | 50% in 13 min, 80% in 40 min (250W dual-port) |
| Screen | 3.9-inch LCD | Smart display |
| App | Yes (Wi-Fi 2.4GHz and Bluetooth) | Yes (Bluetooth) |
| Size | 56.51 x 63.95 x 151.98 mm | 159.9 x 38 x 62.7 mm |
| Weight | 700 g | 600 g |
| Cycle life | 300 cycles to 80% | n/a on spec sheet |
| Warranty | 24 months | See Anker’s listing |
| Price, maker store (Oct. 17, 2026) | $249.99 (regular $289) | $229.99 (listed with $30 off) |
Ports: four devices vs three
The two banks split their 300W differently.
EcoFlow has one 140W USB-C port and two 65W USB-C ports. The included magnetic block snaps on and adds a 60 cm retractable USB-C cable. That cable also supports 140W in both directions, so you can charge four devices at once without carrying a cable.
Anker gives you two full 140W USB-C ports plus a 22.5W USB-A port.
In practice:
- Two big laptops at full speed: The Anker can run both 140W ports at once. On the EcoFlow, the second laptop runs from the retractable 140W cable.
- Laptop, phone, earbuds and watch: The EcoFlow’s four USB-C outputs handle this more neatly.
- Older USB-A gear: Only the Anker has a USB-A port.
Both support PD 3.1. EcoFlow’s FAQ lists PD 3.0 PPS, QC3.0, AFC, Apple 2.4A, BC1.2, SCP, FCP and UFCS on output. For full 140W into a MacBook Pro, use a cable rated for 240W (5A).
Recharge speed
This is the biggest difference between them.
EcoFlow’s headline figure is 0–80% in 20 minutes, using its own RAPID Pro 320W charging station through the pogo pins. Over regular USB-C, EcoFlow’s Amazon listing gives 80% in 26 minutes at 280W (multi-port) and 80% in 40 minutes from a single 140W port.
Anker quotes 50% in 13 minutes and 80% in 40 minutes using both USB-C ports at 250W. Its 150W charging base is an option if you want a desk dock.
If you already own a high-wattage multi-port GaN charger, the EcoFlow refills faster. If you’ll charge from one 140W brick, the two are about even, at roughly 40 minutes to 80% per each maker.
EcoFlow adds that pass-through charging needs a charger of at least 20W, and input has to exceed output for connected devices to run at full load.
Screen and app
EcoFlow’s 3.9-inch LCD shows charge status and per-port power, and you can customize the standby graphic. A clock screensaver can be turned on in the app; it’s off by default.
The EcoFlow app connects over 2.4GHz Wi-Fi or Bluetooth. It covers power monitoring, firmware updates, themes and charging strategy, including a battery optimization mode. Anker’s Prime has its own smart display and Bluetooth app with output controls.
Both banks work fine without the app.
Modular add-ons and safety features
EcoFlow designed the RAPID Pro X around snap-on modules. EcoFlow’s European spec sheet lists two:
- Retractable cable module (included in the U.S. kit): 92.2 g, about 23.5 x 55.7 x 64 mm.
- Wireless charging module (sold separately): 85.4 g.
EcoFlow also sells a magnetic block with an Apple Watch charger, plus limited-edition cases, including a glow-in-the-dark one. Its FAQ confirms the watch module and special cases aren’t in the standard box.
On safety, EcoFlow’s Amazon listing describes “X-Guard” protection. It uses what EcoFlow calls UAV-grade cells and smart temperature control, which EcoFlow says lowers peak temperature by 46.4°F, along with an eco mode and charging protection. EcoFlow’s Estonian store spec sheet adds a V0 flame-retardant shell and 1 m drop resistance.
Anker’s equivalent is ActiveShield 4.0, which Anker says checks temperature 120 times per second.
Pairing the EcoFlow with its app
EcoFlow’s FAQ gives the steps:
- On the bank’s screen, go to Settings, then “Wi-Fi & BLE,” and switch it on.
- Make sure Bluetooth is on for your phone, then tap “+” on the EcoFlow app home screen.
- Pick a 2.4GHz Wi-Fi network and enter the password. Or tap “Set up later” to stay on Bluetooth only.
- When the device page opens, look for the Wi-Fi or Bluetooth icon at the top to confirm it’s connected.
Once it’s paired, update the firmware. EcoFlow recommends this even though the bank works straight out of the box.
Running a laptop and Starlink Mini
Both meet Starlink’s requirement for powering the Mini over USB-C: 100W USB PD at 20V/5A minimum, with Starlink’s USB-C to barrel jack cable. Starlink lists average draw at 25–40W.
Energy losses mean neither bank delivers its full ~99.6Wh. EcoFlow’s FAQ attributes the shortfall to losses in the battery and conversion circuits. Here are my estimates with about 55–70Wh actually delivered:
| Load | Either bank (estimate) |
|---|---|
| Starlink Mini alone (25–40W) | ~1.4–2.8 hours |
| 13-inch MacBook Air (M2, 52.6Wh battery) | ~1–1.3 charges (EcoFlow’s Amazon listing says up to 1.3) |
| iPhone 16 | Up to 4.5 charges (EcoFlow’s claim) |
| Steam Deck | Up to 1.4 charges (EcoFlow’s claim) |
For a full day of Starlink, a DC bank like the XTAR MP158 or a small power station lasts longer. See my Starlink Mini USB-C power guide for cables, or the STARGEAR 140W retractable cable.
Travel and care
Both come in under 100Wh, the standard carry-on threshold. EcoFlow notes that airline rules vary, so check with your carrier.
EcoFlow says the RAPID Pro X keeps over 80% of its capacity after 300 cycles. It should be charged and used between 0°C and 40°C, below 3,000 m altitude, stored between -20°C and 40°C, and recharged at least every three months.
Comparing other carry-on banks? See my best power banks for travel. For a cheaper 140W option, my Anker 737 review covers the older 24K model.
Who should buy which
EcoFlow RAPID Pro X
- You want the fastest top-up during a layover, or you’ll use EcoFlow’s 320W station at your desk.
- You like a built-in retractable cable and charging four USB-C devices at once.
- You want a big, customizable screen and Wi-Fi app access.
Anker Prime 26K 300W
- You run two 140W laptops from fixed ports at the same time.
- You still have USB-A gear.
- You want the lighter, slimmer bank for $20 less on the maker store.
FAQ
Can both go on a plane?
Yes. At 99.54Wh (EcoFlow) and 99.75Wh (Anker), both are under the 100Wh carry-on limit most airlines use. Confirm with your airline.
Which recharges faster?
The EcoFlow: 80% in 20 minutes on its 320W station, or 26 minutes at 280W over USB-C, according to EcoFlow. Anker lists 80% in 40 minutes at 250W.
Do they support pass-through charging?
EcoFlow says yes, with a charger of 20W or more. Anker’s details are in my Prime 26K review.
Does the RAPID Pro X need the app?
No. EcoFlow says it’s plug-and-play, but recommends connecting once to update the firmware.
Which is lighter?
Anker’s Prime 26K at 600 g. EcoFlow lists 700 g for the RAPID Pro X body.
Bottom line
These are two of the strongest carry-on power banks available. The EcoFlow RAPID Pro X is the one to pick if recharge speed and a four-device, cable-included setup matter most. The Anker Prime 26K 300W is lighter and slimmer, costs a little less, and has two fixed 140W ports plus USB-A. Either one will keep a laptop, phone and even a Starlink Mini running on the move.