An attached cable saves a small but familiar hassle: remembering a separate lead. The compromise shows up in the bank itself. The 10K option keeps capacity and output modest; moving to laptop power means carrying a larger, heavier pack whether or not the cables are built in.
The cable-first pick is for a phone bag
The Anker Nano 10K’s USB-C lead retracts into the bank, so there is no loose cable to pack. Its cable or USB-C port can supply up to 45W when used alone; with more than one output in use, total output is capped at 22.5W. TechRadar’s reviewer found the cable and display practical, but also reported thermal throttling and reduced high-power performance in testing. Anker specifications TechRadar review
More output means a more substantial bank
The Anker Power Bank 20K adds a USB-C port and USB-A alongside its built-in USB-C cable. It reaches 65W from one USB-C connection and weighs about 431 g. That is a useful middle ground when laptop charging is part of the job; it is a lot of extra bank for someone who only wants a phone top-up. Anker specifications
The Anker Laptop Power Bank 25K goes further: two built-in USB-C cables, a separate USB-C port, USB-A, and up to 100W from one USB-C connection. At 595 g, it is a laptop battery that happens to spare you from packing two leads. Its 165W headline is shared output. Anker specifications Power allocation
For a laptop-first comparison of output and carry weight, see power banks for laptops.
Products covered
Anker / Accessories
Anker Power Bank 20,000mAh / 87W Total (A1383)
$69.99 US price checked Source: AmazonAmazon US: Black A1383; new, sold by AnkerDirect and shipped by Amazon. In stock when checked; price and availability may change.
Compare ↗Anker / Accessories
Anker Nano Power Bank (10K, 45W, Built-In Retractable USB-C Cable)
$59.99 US price checked Source: AnkerAnker US direct-store price for A1638, in stock; Amazon ASIN B0DGKWTQQC offer price may differ.
Compare ↗Anker / Accessories
Anker Laptop Power Bank (25K, 165W, Built-In and Retractable Cables)
$119.99 US price checked Source: AnkerAnker US direct-store price for Space Black, Power Bank only; Amazon affiliate destination price may differ.
Compare ↗Specifications
Facts before interpretation
Key hardware differences
Specifications refer to the variants shown. Battery capacity, claimed endurance, and independently measured runtime are different quantities.
On narrow screens, scroll the table horizontally.
| Characteristic | Anker Power Bank 20,000mAh / 87W Total (A1383) | Anker Nano Power Bank (10K, 45W, Built-In Retractable USB-C Cable) | Anker Laptop Power Bank (25K, 165W, Built-In and Retractable Cables) |
|---|---|---|---|
| Display | Not available | Light-sensitive TFT display shows battery status and USB-C/USB-A charging power flowAnkerAnker Support | Shows battery level, input/output power, and estimated recharge timeAnker |
| Weight | Approximately 431gAnker | 0.51 lbAnker | 595 g / 20.99 ozAnker Support |
| Battery | Not available | 10,000mAhAnker | 25,000mAh at 3.6V / 90Wh; usable output is lower after conversion lossesAnker SupportAnker |
| Built-in cables | Not available | Retractable USB-C, approximately 2.3 ftAnker | Retractable 27.6 in / 70 cm cable; 11.8 in / 30 cm cable doubles as a carrying loopAnker SupportAnker |
| Charging | Not available | Up to 45W from built-in cable or USB-C port when used aloneAnker | Each USB-C connection up to 100W alone; USB-A up to 33W aloneAnker SupportAnker Support |
| Ports / external display | Not available | Built-in USB-C cable, one USB-C port, one USB-A portAnker | Two built-in USB-C cables, one USB-C port, one USB-A port (3 USB-C connections plus USB-A)Anker Support |
| Dimensions | Not available | 3.21 × 1.99 × 1.42 inAnker | 157 x 54 x 49 mm / 6.18 x 2.13 x 1.93 inAnker Support |
| Cell capacity | 20,000mAh rated cell capacity; delivered energy variesAnker | Not available | Not available |
| Connections | One built-in USB-C cable, one USB-C port and one USB-A portAnker | Not available | Not available |
| USB-C input | Not available | Up to 30W via cable or portAnker | Up to 100W through a USB-C cable or port; Anker estimates about 2 hours with a 100W charger under stated conditionsAnker SupportAnker |
| Power limits | Up to 65W from one USB-C connection; up to 87W total across devicesAnker | Not available | Not available |
| Shared output | Not available | Cable + USB-C port: 22.5W max total; all three outputs: 22.5W max totalAnker | Two USB-C connections share up to 165W (each at most 100W); USB-C + USB-A up to 100W + 33W; three or four connections up to 130W total, with 100W priority and 30W shared across the rest. Anker says these allocations require at least 78% battery charge.Anker SupportAnker |
| US air travel | Not available | Not available | 90Wh is below the FAA 100Wh limit for a lithium-ion power bank; carry-on only, subject to airline restrictionsAnker SupportFederal Aviation Administration |
| US model and Amazon ASIN | Black A1383; Amazon US ASIN B0CXDXP8VRAnkerPartnerBoost | Not available | Not available |
Where to buy
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Sources & evidence (15)
Trace the evidence
Sources
Linked sources are the underlying evidence. Fit judgments and explanations marked “Our analysis” are our interpretation.
- Official specification
Anker · Anker A1383 specifications and user guides ↗
Accessed
- Independent measurement
Charge-Test · Anker A1383 review: 20,000mAh, 65W USB-C and integrated cable ↗
Accessed
- Official specification
Anker · Anker Nano Power Bank (10K, 45W, Built-In Retractable USB-C Cable) ↗
Accessed
- Reviewer observation
TechRadar · Anker Nano Power Bank 10K 45W Built-In Retractable USB-C Cable review ↗
Accessed
- Official specification
Anker Support · Specification of Anker Power Bank (25K, 165W, Built-In and Retractable Cables) ↗
Accessed
- Official specification
Anker Support · How Power is Distributed in Anker Power Bank (25K, 165W, Built-In and Retractable Cables) ↗
Accessed
- Official specification
Anker · Anker Power Bank (20K, 87W, Built-In USB-C Cable), US product page ↗
Accessed
- Official specification
PartnerBoost · Anker Power Bank 20,000mAh / 87W Total (A1383) Amazon US destination (B0CXDXP8VR) ↗
Accessed
- Official specification
Amazon · Anker Power Bank 20,000mAh / 87W Total (A1383): Amazon US price ↗
Accessed
- Official specification
Anker Support · Anker Nano Power Bank (10K, 45W, Built-In Retractable USB-C Cable) product description ↗
Accessed
- Official specification
Amazon · Anker Nano Power Bank A1638 Amazon US listing ↗
Accessed
- Official specification
Anker · Anker Laptop Power Bank (25K, 165W, Built-In and Retractable Cables) ↗
Accessed
- Official specification
Federal Aviation Administration · Airline Passengers and Batteries ↗
Accessed
- Reviewer observation
Expert Reviews · Anker Laptop Power Bank (A1695) review: Essential for travel ↗
Accessed
- Official specification
Amazon · Anker Laptop Power Bank Amazon US listing (B0DCBB2YTR) ↗
Accessed
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