https://wccftech.com/galaxy-s22-plus-smaller-battery-than-galaxy-s21-plus/

At 4800mAh, the Galaxy S21 Plus battery capacity is only 200mAh smaller than the cell present in the Galaxy S21 Ultra. However, according to the latest info, Samsung might make that difference more pronounced when launching the Galaxy S22 Plus. In other words, we might see a smaller battery in the upcoming handset.

The Galaxy S22 Plus will apparently sport the model number SM-S906, with the battery part featuring the designation number EB-BS906ABY, according to GalaxyClub. The publication reports that the rated battery capacity will be 4370mAh, while the advertised capacity will be 4500mAh. These numbers reveal a downgrade for the Galaxy S22 Plus, and while lots of readers may not think of the difference as much, it can mean a lot depending on your daily usage.