What's the maximum charging speed for the Google Pixel 7a with the Anker Prime 100W Charger?

Up to 18W via USB PD, assuming you're using an adequately rated cable.

Do I need a special cable for this combination?

Any standard USB-C cable rated 3A or higher works fine — no special "e-marked" cable needed at 18W.

Not among the chargers we recommend for it — the Anker Prime 100W Charger already delivers the Google Pixel 7a's full 18W ceiling.

Yes — this combination fast-charges at up to 18W via USB PD.

Both sides speak USB PD, and the Anker Prime 100W Charger delivers enough power for the Google Pixel 7a to hit its full 18W ceiling.

Device	Google Pixel 7a
Charger	Anker Prime 100W Charger (2-Port USB-C, 1-Port USB-A)
Negotiated wattage	18W
Protocol	USB PD
Match quality	Full speed

The wattage above assumes an adequately rated cable. Here's what actually happens with three common cable situations:

Cable	Real wattage	Cable-limited?
Standard 60W-rated cable (3A, not e-marked)	18W	Not the bottleneck
100W / 5A e-marked cable	18W	Not the bottleneck
Unrated / unknown cable (assume worst case)	18W	Cable-limited

What's the maximum charging speed for the Google Pixel 7a with the Anker Prime 100W Charger?: Up to 18W via USB PD, assuming you're using an adequately rated cable.
Do I need a special cable for this combination?: Any standard USB-C cable rated 3A or higher works fine — no special "e-marked" cable needed at 18W.
Is there a faster charger for the Google Pixel 7a?: Not among the chargers we recommend for it — the Anker Prime 100W Charger already delivers the Google Pixel 7a's full 18W ceiling.

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