Base Station Pro is not charging iPhone to 100% after charging overnight or is slow charging
Base Station Pro on the current firmware V1.2.0 takes 3 to 4 hours to charge 0-80% and can take anywhere from 3 to 8 hours to charge the last 80-100% battery depending on your device model.
All devices enter a slower charging mode once the battery level exceeds 80% due to battery chemistry limitations. This can be especially pronounced in Base Station Pro. Quicker charging may be achieved by disabling the “Optimized Battery Charging” setting on your iPhone.
The iPhone 12 and 13 series have been found to reduce wireless charging efficiency when charging on Base Station Pro, resulting in slower charging times. Best charging efficiency can be achieved when a single device is charging in vertical, or “portrait”, orientation on the wireless charging surface (placed at a 90º angle in relation to the wireless charging surface).