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Anker 317 vs 523: Choose for Your Charging Setup

Choose the Anker 317 for one compatible USB-C device needing more than 45W, up to its 100W rating. Choose the Anker 523 for two compatible devices that fit its 27W + 20W allocation. The trade-off is single-device capacity versus a second direct connection.

Published by Pickoryx · Published 2026-10-09

Source checked 2026-10-09 04:34 UTC

Products compared

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The buying question

Which charger fits the power each device needs and how many must connect at once?

The 317 concentrates its capacity in one output; the 523 adds a second connection with a lower per-device power budget.

Quick verdict

When to skip: You need one charger to supply 45W to one device while also supplying 20W to another.
When the recommendation changes
  • If you need both a higher-demand device and a second device powered from one charger, look beyond this pair.
  • If you only connect one low-demand device, compare the complete offer and required cables rather than paying for unused capacity.

The differences that matter

Single Device Power Envelope

Anker 317 Charger (100W, A2672, Black)

Up to 100W through its USB-C output, including 20V/5A.[1, 2]

Anker 523 Charger (Nano 3, 47W, A2039, White)

Up to 45W from either USB-C port used alone, including 20V/2.25A.[4]

What this changes: For one compatible device requiring more than 45W and no more than 100W, choose the 317. Match the required voltage and protocol; its 100W rating requires a 5A cable and does not promise a charge time.[1, 5, 4]

The better fit depends on your priorities

Concurrent Device Connections

Anker 317 Charger (100W, A2672, Black)

One USB-C port for one directly connected device.[3]

Anker 523 Charger (Nano 3, 47W, A2039, White)

Two USB-C ports with a combined allocation of 27W + 20W.[4]

What this changes: Choose the 523 when two compatible, lower-demand devices need to stay connected together. You give up its single-port power ceiling when using both outputs; the 317 instead requires swapping devices or a second charger.[3, 4]

The better fit depends on your priorities

Best for your routine

One compatible 20V device whose supply requirement is above 45W

Best fit: Anker 317 Charger (100W, A2672, Black)

Based on listed features, not comparative testing.

The 317 has the applicable higher output envelope, provided the requirement stays within its rating and you use a suitable cable. The compromise is having no second output.

View Anker 317 Charger (100W, A2672, Black) on AmazonPaid link

Two compatible low-demand devices used together

Best fit: Anker 523 Charger (Nano 3, 47W, A2039, White)

Based on listed features, not comparative testing.

The 523 provides both connections. Check each device against the simultaneous allocation rather than treating the charger’s total as either port’s allowance.

View Anker 523 Charger (Nano 3, 47W, A2039, White) on AmazonPaid link

Value and trade-offs

One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.

Pay extra only for capacity or a second connection that your setup needs. Include any required cables when comparing complete offers.

There is insufficient verified price history for a purchase-timing recommendation.

Limitations

  • These are manufacturer-rated configurations, not Pickoryx charging tests. No charging-speed, sustained-output, reliability or safety winner is established.
  • The 317 manual warns that high-load output may fluctuate at 26–35°C ambient temperature. Its maximum is conditional on the device and cable as well as the charging conditions.
  • A USB-C connector alone does not establish compatibility. Match your device’s required protocol, voltage and current; use a 5A-rated USB-C cable for the 317’s 100W maximum.
  • The selected US offers’ exact cable contents have not been verified. Confirm what is included and the cable ratings before comparing the total purchase cost; overseas packages do not establish US contents.

Questions shoppers ask

Why is the 523 called 47W if one device gets at most 45W?

47W names its combined two-port maximum. Anker’s US specifications give 45W for a single port and 27W + 20W for simultaneous use. Do not budget 47W for one device or 45W for each.

What if my device only needs 20W?

The 317’s larger maximum is not a reason by itself to expect a faster charge. Check compatibility first, then decide whether you need the 523’s second connection.

Methodology and sources

Compared the listed single-device output profiles and concurrent connection limits, keeping rated capacity separate from measured charging results.

AI assisted with source comparison and drafting. Pickoryx did not test either charger.

View 5 sources
  1. 1.Anker 317 Charger (100W): product descriptionAnker · Official specifications · Source checked 2026-10-09 04:31 UTC
    Evidence used on this page
    • Output; Charging Technology: Lists 100W maximum, including 20V/5A output.
  2. 2.Anker 317 Charger (100W): A2672 user manualAnker · Official specifications · Source checked 2026-10-09 04:31 UTC
    Evidence used on this page
    • Page 2, Specifications and temperature note: Model-specific electrical ratings and high-load ambient-temperature qualification; multilingual manual hosted by Anker Japan, not US package evidence.
  3. 3.Anker 317 Charger (100W): Canadian product pageAnker · Official specifications · Source checked 2026-10-09 04:31 UTC
    Evidence used on this page
    • Product description and product photographs: One USB-C output. Used only for the A2672 physical configuration, not Canadian pricing or US contents.
  4. 4.Anker 523 Charger (Nano 3, 47W): US product specificationsAnker · Official specifications · Source checked 2026-10-09 04:31 UTC
    Evidence used on this page
    • Specifications; Model Number A2039; One Charger, Two Devices: Two USB-C ports; 45W maximum alone and 27W+20W with both occupied.
  5. 5.Anker 317 Charger (100W Max): cable specificationAnker · Official specifications · Source checked 2026-10-09 04:32 UTC
    Evidence used on this page
    • Model Number A2672; Efficient Charging Experience: The UK model page describes a 5A/100W E-Marker cable; used for cable-rating context, not proof of the selected US package.