Display Brightness and Refresh Rate Impact
Screen brightness greatly affects your playing time. Lowering from 100% to 50% brightness prolonged battery life by nearly 90 minutes on all test devices. Finnish winters mean lots of indoor play with lower ambient light, so you can easily lower that slider. If your phone has a 120Hz high refresh rate display, I recorded an extra 15–20% battery drain per hour. I advise locking to 60Hz before a long Pelikioski Casino session far from a charger.