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New problem arises: Pixel 2 XL is slowly charging (proof)

Any day, a new problem, identified by the flagship smartphone Google Pixel 2 XL. This time it turned out that he uses rather strange algorithms, because of which he charges slowly with any charger, including a complete 18W. One of the owners of the smartphone discharged it to 15% and put it on charging, connecting to the device measuring the power of charging, the current and voltage of the battery, as well as the temperature of the smartphone. In total, it took him almost 2.5 hours to charge the smartphone, and the whole process can be divided into two stages.

Pixel 2 XL is slowly charging

For the first fifty minutes, the charging was rather brisk: the current strength was about 2.2 A (-2.2 million on the left scale of the upper graph), and the power was slightly more than 10 W (the left scale of the lower graph). At the same time, the power was periodically raised to 11-12 W, and the current strength jumped from 1 A to 2.5 A. As a result, the battery voltage reached its maximum value of 4.4 V (4400 on the right scale of the top graph), and the smartphone heated to 32.5 degrees (325 on the right scale of the lower chart).

Pixel 2 XL charging

After that, something went wrong. Over the next one and a half hours, the charging voltage was constantly falling, breaking the 5 W mark first (this is the level of the usual charge of 5 V and 1 A), and then 2 watts. This advantage was achieved due to a drop in the applied current, first to 1 A, and then to below 0.5 A. Such a weak charge caused the smartphone to cool down to room temperature, but it was charged for a very long time. Why Google suggested in the flagship smartphone is such a careful charging algorithm, it is unclear. Note that the tester tried to charge the smartphone and third-party charging, but each time he received a similar picture.

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