The Google Pixel 9a supports up to 23W wired charging, provided you use a compatible charger like Google's 45W USB-C wall charger[2][3]. While there isn't specific information on the exact time it takes to fully charge the Pixel 9a from 0 to 100%, we can estimate based on similar charging speeds.
For comparison, the Pixel 9 series, which charges at up to 27W, can fill its 4,700mAh battery in about 70 to 80 minutes[5]. Given that the Pixel 9a has a larger 5,100mAh battery and charges at a slightly lower speed of 23W, it would likely take longer than the Pixel 9 to fully charge.
Assuming a similar charging efficiency, the Pixel 9a might take around 90 to 110 minutes to fully charge from empty, depending on factors like the charger used and the phone's condition. However, this is an estimate and actual charging times may vary based on real-world conditions.
In addition to wired charging, the Pixel 9a also supports 7.5W wireless charging, which is slower and typically used for convenience rather than speed[1][3].
Citations:
[1] https://www.androidauthority.com/pixel-9a-big-battery-fast-charging-3536045/
[2] https://www.tomsguide.com/phones/google-pixel-phones/google-pixel-9a-specs
[3] https://www.androidcentral.com/phones/google/how-fast-is-the-google-pixel-9a-charging-speed
[4] https://www.phonearena.com/news/google-pixel-9a-battery_id167234
[5] https://www.androidpolice.com/google-pixel-9-supports-faster-wired-charging-catch/
[6] https://www.pcmag.com/comparisons/google-pixel-9a-vs-pixel-9-whats-the-difference
[7] https://thinborne.com/blogs/tips-how-tos-android-and-apple/all-ways-to-charge-the-google-pixel-9-pro-series
[8] https://www.forbes.com/sites/davidphelan/2025/03/19/google-launches-sleek-new-pixel-9a-with-best-battery-life-for-499/
[9] https://store.google.com/magazine/compare_pixel
[10] https://store.google.com/product/pixel_9_specs