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Anker A2724 vs A2738 Car Charger: Which Setup Fits Your Devices?

Choose by how you connect devices and what their charging specifications require. The A2724 gives you two USB-C ports, each rated up to 20W (40W total); the A2738 pairs a built-in retractable USB-C cable with a separate USB-C port, with Anker listing up to 45W on the cable, 30W on the port, and 75W total. Those are published maxima, not guaranteed charging speeds or a promise that every device combination will negotiate both port ceilings at once.

Published by Pickoryx · Published 2026-10-19

Source checked 2026-10-19 05:39 UTC

Products compared

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The buying question

Do separate USB-C ports or an integrated retractable cable better fit the car's device and cable routine, and do the published output ratings fit those devices?

A2724 offers two USB-C ports with up-to-20W-per-port and 40W-total ratings. A2738 adds an integrated retractable cable and a second port, with higher listed maxima of 45W on the cable, 30W on the port, and 75W overall.

Quick verdict

Choose Anker PowerDrive III Duo USB-C Car Charger (A2724) if

  • You prefer two open USB-C ports and have your own cables arranged for the devices in the car.
  • The devices you plan to connect fit Anker's published 20W-per-port, 40W-total A2724 ratings; check the devices' own supported charging protocols and input requirements.
View Anker PowerDrive III Duo USB-C Car Charger (A2724) on AmazonPaid link

Choose Anker Nano 75W Car Charger (A2738) if

  • You want one cable built into the charger that pulls out for use and retracts for storage, plus a second USB-C port.
  • A device's documented USB-C input can make use of the A2738 cable's up-to-45W rating while your other device uses the additional port, after checking device and shared-output compatibility.
View Anker Nano 75W Car Charger (A2738) on AmazonPaid link
When to skip: Skip both if a device requires a USB-A output, more than two charging connections, or a vehicle power input outside the listed 12/24V DC range.
When the recommendation changes
  • A device's required input, cable, or charging protocol does not match the selected output.
  • Anker publishes a simultaneous-output table that changes the per-connection limits while both A2738 outputs are in use.

The differences that matter

Cable Connection And Stowage Workflow

Anker PowerDrive III Duo USB-C Car Charger (A2724)

Anker describes the A2724 as having two USB-C output ports.[1]

Anker Nano 75W Car Charger (A2738)

Anker describes the A2738 as having one built-in retractable USB-C cable and a separate USB-C port.[2, 4]

What this changes: A2724 lets the user choose the separate cables and their routing for either port. A2738 puts one USB-C cable on the charger and retracts it after use, while retaining a port for another cable. Pick the layout that matches how you want to reach and stow charging connections; this does not establish charging-speed superiority.[1, 2, 4]

The better fit depends on your priorities

Port Allocation And Device Mix

Anker PowerDrive III Duo USB-C Car Charger (A2724)

Anker lists two USB-C ports rated up to 20W each and 40W total for the A2724.[1]

Anker Nano 75W Car Charger (A2738)

Anker lists the A2738 at 75W total, with up to 45W for the retractable cable and up to 30W for its USB-C port.[3]

What this changes: Compare each device's documented input and supported charging protocol with the listed maximum for the connection it will use. Anker's opened specification record gives overall and individual maxima but does not provide a full simultaneous-device power table; do not assume that each connection will always deliver its ceiling or that a higher wattage rating guarantees a measured faster charge.[1, 3]

The better fit depends on your priorities

Best for your routine

A driver who wants to supply and route two separate USB-C cables

Best fit: Anker PowerDrive III Duo USB-C Car Charger (A2724)

Based on listed features, not comparative testing.

The A2724 is documented with two USB-C ports; the A2738 instead builds one retractable USB-C cable into the charger and provides one additional port.

View Anker PowerDrive III Duo USB-C Car Charger (A2724) on AmazonPaid link

A driver who values a cable integrated into the charger and retractable for storage

Best fit: Anker Nano 75W Car Charger (A2738)

Based on listed features, not comparative testing.

Anker documents a built-in retractable USB-C cable on the A2738. This is a layout recommendation, not a claim about charging performance.

View Anker Nano 75W Car Charger (A2738) on AmazonPaid link

Value and trade-offs

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

A higher current offer for the A2738 would need to be justified by the built-in retractable cable or by device requirements that fit its published output ratings. Compare current offers after verifying the exact model.

Price history was not assessed, so no purchase-timing recommendation is made.

Limitations

  • Anker's figures are output ratings and maxima, not independent measurements of charging speed or an estimate of time saved.
  • The A2738 specification source lists the total and each connection's maximum but does not provide a complete simultaneous-output distribution table. Device negotiation, supported protocols, cable, and shared output can affect the power delivered.
  • This comparison focuses on US hardware features and ratings; UK-specific offers, warranty terms, and package contents are outside its scope.
  • No current-stock guarantee, controlled charging test, vehicle-fit test, or device-compatibility test was performed. Confirm the vehicle's 12/24V supply and each device's charging requirements before purchase.

Questions shoppers ask

Does the A2724 have two USB-C outputs?

Yes. Anker lists twin USB-C ports for the PowerDrive III Duo A2724, each rated up to 20W, with a 40W total maximum.

Does the A2738 include a built-in USB-C cable?

Anker's A2738 product page and official product description identify a built-in retractable USB-C cable plus one separate USB-C port. The cited product description does not show a full two-device power-distribution table.

Will the A2738 charge a laptop faster than the A2724?

The specifications alone cannot answer that for every laptop. Anker lists up to 45W on the A2738 retractable cable and up to 20W per A2724 port, but the device must support the relevant input and protocol, and real charging speed was not tested here.

Methodology and sources

Compared Anker's published connector layouts and output ratings for exact models A2724 and A2738. Output figures are maxima and do not establish measured charging speed or every simultaneous-device allocation.

Research and drafting assistance; no charging or vehicle-fit testing was performed.

View 4 sources
  1. 1.Anker PowerDrive III Duo USB-C Car ChargerAnker US · Official support · Source checked 2026-10-19 05:39 UTC
    Evidence used on this page
    • Model number, twin USB-C ports, input/output specifications, and compatibility notes.: The official US page identifies model A2724 / PowerDrive III Duo; it lists two USB-C ports, up to 20W per port, 40W total, and a 12/24V input. It is used for published design and rating facts, not as a test of charge speed or universal compatibility.
  2. 2.Anker Nano 75W Car ChargerAnker US · Official support · Source checked 2026-10-19 05:39 UTC
    Evidence used on this page
    • Official US product page and product images/features for the 75W Nano car charger with dual-device and retractable-cable features; URL product path is /a2738.: The official US Anker page names the Nano 75W Car Charger, advertises dual-device charging and pull/charge/store, and its product imagery identifies the integrated retractable USB-C cable. Its rendered text omits the A2738 model string and the detailed output table; those limits are cross-checked against the official support record and exact A2738 model page.
  3. 3.Anker Nano Car Charger (75W, USB-C Port, Built-In Retractable USB-C Cable)Anker Support · Official support · Source checked 2026-10-19 05:39 UTC
    Evidence used on this page
    • Total Output, USB-C Cable, and USB-C Port specification sections.: The official Anker support product-description page for the 75W Nano car charger lists 75W total output, up to 45W on the built-in USB-C cable, and up to 30W on the USB-C port. It does not state the complete simultaneous-device power profile or print the A2738 model number in the rendered text.
  4. 4.Anker USB-C Car Charger (75W Max Ultra-Compact Type-C Fast Car Charger with Built-In Retractable Cable)Anker UK · Official support · Source checked 2026-10-19 05:39 UTC
    Evidence used on this page
    • Model Number A2738 and model-feature description for built-in retractable cable and second USB-C port.: Anker's official UK product page explicitly identifies model number A2738 and describes the 75W Nano car charger with built-in retractable USB-C cable plus a USB-C port. Used only to strengthen the exact model-number link; no UK price, warranty, box contents, or regional commercial term is applied to the US product.

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