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The UGREEN Nexode PB721 is the strongest overall balance of 20,000mAh / 72Wh capacity, up to 130W multi-port output, three ports, and a TFT display. Choose the Anker 737 for the largest capacity and highest maximum output in this shortlist, the Anker Nano A1259 for compact built-in-cable convenience, or the Belkin BoostCharge for a simpler lower-output value option.
Heavier than the two 10,000mAh options
At 22.22 oz, it is the heaviest pick
Lower capacity and output than the larger models
15W shared output is modest for larger devices
| Criterion | UGREEN Nexode PB721 | Anker 737 A1289 | Anker Nano A1259 | Belkin BoostCharge BPB011 |
|---|---|---|---|---|
| Capacity | 20,000mAh / 72Wh | 24,000mAh | 10,000mAh | 10,000mAh |
| Maximum output | 130W total | 140W | 30W USB-C | 15W shared |
| Ports | 2 USB-C + 1 USB-A | 2 USB-C + 1 USB-A | 1 USB-C + 1 USB-A, plus integrated cable | 1 USB-C + 2 USB-A |
| Built-in cable | No | No | Yes, USB-C | No |
| Display | TFT smart display | Smart digital display | Color display | LED indicator |
| Best fit | Best overall | High-capacity use | Compact everyday carry | Simple value option |
| Where to buy | Check price on Amazon | Check price on Amazon | Check price on Amazon | Check price on Amazon |
Higher-output USB-C can support compatible laptops and faster-charging devices, while phones and accessories may need less. Actual charging depends on the device, cable, protocol, and power sharing.
More advertised capacity generally means more stored energy but also more size and weight. Manufacturer capacity is not the same as measured usable output after conversion losses.
A built-in cable can reduce what you carry, while multiple USB-C and USB-A ports improve compatibility. When several devices are connected, total power may be shared.
Percentage or TFT displays provide more detail than basic LEDs. Documented warranty length also matters when comparing otherwise similar hardware.
UGREEN documents 20,000mAh / 72Wh capacity, up to 130W total output, a 100W USB-C1 output, three ports, and a TFT display.
It combines laptop-class USB-C output, mid-high capacity, and a detailed display without reaching the Anker 737’s weight.
Its 476 g weight is notably more than the compact 10,000mAh models.
Travelers and everyday users who want a strong balance of capacity, output, and port flexibility.
Anker documents 24,000mAh capacity, up to 140W output, two USB-C ports, one USB-A port, a smart display, and a two-year warranty.
It has the largest advertised capacity and highest maximum output in this four-product shortlist.
At 22.22 oz / 630 g, it is the heaviest option here.
Users prioritizing high capacity and high-output USB-C charging over minimum weight.
Anker documents 10,000mAh capacity, up to 30W USB-C output, a built-in bidirectional USB-C cable, USB-A support, and a color display.
The integrated cable and 4.09 × 2.06 × 1.02-inch body make it the most carry-focused option in this group.
Its capacity and maximum output are lower than the two larger models.
People who value compact size and built-in-cable convenience for phones and smaller devices.
Belkin documents 10,000mAh capacity, one USB-C and two USB-A ports, 15W shared maximum output, an LED indicator, and a two-year warranty.
It offers a straightforward three-port layout and includes a short USB-A-to-USB-C cable.
The 15W shared output is modest for power-hungry devices and simultaneous charging.
Budget-focused users who need basic phone and accessory charging rather than high-output laptop charging.
ChoiceCheckLab did not perform original hands-on or laboratory testing. We compared official manufacturer specifications, manuals, warranty information, and current Amazon US records for the exact models and ASINs listed. Recommendation labels reflect documented capacity, output, ports, dimensions, weight, display, and included accessories—not measured charging speed, efficiency, thermal behavior, durability, or usable capacity.
No verified numeric prices, Amazon ratings, or review counts were entered. Manufacturer-rated capacity does not equal measured usable output. Multi-port power sharing and device charging rates depend on connected devices, cables, protocols, and conditions. Airline policies vary; check the documented capacity or Wh rating against the traveler’s airline and current rules before travel.
The UGREEN Nexode PB721 is our best overall pick because it balances 20,000mAh / 72Wh capacity, up to 130W total output, three ports, and a TFT display.
The Anker 737 has the largest advertised capacity in this shortlist at 24,000mAh and supports up to 140W output.
No. The advertised figure describes internal battery capacity; real usable output is lower because power conversion and operating conditions introduce losses. We did not measure usable capacity.
The Anker Nano A1259 includes a built-in bidirectional USB-C cable. The other three picks rely on separate cables.
The UGREEN PB721 and Anker 737 officially support high-output USB-C suitable for compatible laptops. Results depend on the laptop, cable, charging protocol, and active port combination.
Do not assume automatic approval. Check each product’s documented capacity or Wh rating against the current rules of the specific airline and route.
Wireless charging is not a documented feature used for any of these four selections. They are compared as wired USB power banks.
Choose the UGREEN Nexode PB721 for the strongest overall balance of capacity, output, ports, and display. The Anker 737 is the better fit when maximum advertised capacity and high output matter more than weight. The Anker Nano A1259 is the compact choice with a built-in USB-C cable, while the Belkin BoostCharge is the simple value option for lower-power devices.