Robert Triggs / Android Authority
The Pixel 6 launch in 2021 promised a significant boost to the charging speeds of Google’s phones, boasting a 30W charger requirement compared to the sluggish 18W from previous years. However, some sleuthing revealed that the company wasn’t entirely honest in its representation, with the Pixel 6 capped at 21W and the 6 Pro handing in 23W of peak power. The charging messaging for the Pixel 7 series is unchanged, with Google recommending its 30W charger for the new phones, which you must buy separately as the brand no longer includes a charger in the box. However, its fine print notes that real charging power requirements remain at 21W and 23W for the Pixel 7 and 7 Pro, respectively. Once again, the 30W plug requirement is seemingly overkill, and lower power alternatives will achieve the same results. We’ve taken Google’s two latest handsets down to our lab to get to grips with exactly what you need to fast charge the Pixel 7 series.
Google Pixel 7 charging test
Two things to note before looking at the numbers. First, the Pixel 7 series charges at its peak power levels when connected to a sufficiently powerful USB Power Delivery PPS plug, which Google’s official and many other third-party products support. Secondly, the handsets peak at a lower 18W-ish of power when connected to a standard USB Power Delivery charger (without PPS support), such as an older Pixel plug or the 30W Apple USB-C charger we’re using for this test. With that out of the way, let’s dive into some figures.
The data speaks for itself; there’s not much difference in full charge times between a PPS and a standard USB Power Delivery Plug. In fact, the Pixel 7 hits full in 100 minutes with USB PD PSS and 101 minutes with an older charger. Meanwhile, the Pixel 7 Pro hits full in 104 minutes with the Google charger and 111 minutes with the regular USB PD Apple model. We’re talking about a margin of error difference here. Astute readers will also note that the Pixel 7 charge times are a smidgen faster than last year’s models. We clocked the Pixel 6 Pro at 111 minutes to full, though some of this difference could be down to temperature variations at the time of testing.
Looking at key milestones, there’s not a huge amount in it either. Using the optimal charger, the regular Pixel 7 hits 25% in 15 minutes, 50% in 30 minutes, and 75% in 52 minutes. By comparison, using a non-PPS charger sees the Pixel 7 hit 25% in 17 minutes, 50% in 34 minutes, and 75% in 55 minutes. In other words, opting for an older charger costs you just a couple of minutes compared to the best-case scenario.
There’s a bigger discrepancy for the Pixel 7 Pro, owing to its higher charging rate and larger 5,000mAh battery versus the Pixel 7’s 4,355mAh cell. It hits 25% in 15 minutes, 50% in 30 minutes, and 75% in 55 minutes when using Google’s 30W plug, which follows the Pixel 7’s trajectory very closely. Switching to a non-PPS charger sees these times fall slightly to 25% in 18 minutes, 50% in 37 minutes, and 75% in 60 minutes. PPS is faster out of the case, but even in the worst case, a standard Power Delivery charger is only seven minutes behind Google’s official recommendation.
Although the Pro benefits more from a PPS charger than the regular model, we’re talking mere minutes. It seems pretty clear that stumping up for Google’s 30W charger is not necessarily worth the extra cash, especially for the standard Pixel 7 model.
Why does the Pixel 7 charge slowly?
The why as to the Google Pixel 7 series’ similarly slow charge times, regardless of the plug, can be seen by looking at the power level throughout the charging cycle. The graph below plots the amount of power the handset draws throughout an entire cycle for both of the 30W plugs used in the previous test.
As you can see, the Pixel 7 and 7 Pro hit 21W and 23W, respectively, for not quite half of their charge cycle when using a USB PD PPS plug. This explains why they’re quicker to charge to 25% and 50% via USB PD PSS than standard USB PD. However, after that initial 30-minute charge, both handsets fall back to a more limited power level below 18W. By comparison, a standard USB PD charger provides close to 19W of power quite consistently until the battery hits around 60% charge. While clearly slower, it’s only a few watts behind what you’ll obtain from a fancier PPS charger.
This explains the virtually identical charge times we saw with the regular Pixel 7. An extra 2W makes very little difference in the early stages of charging, while the regular USB PD charger actually sustains higher power for longer (