The Galaxy Z Flip 6 will have two batteries that could be promoted by Samsung as having a (typical) 4000mAh capacity
The 3887mAh capacity of the two batteries expected to power the Galaxy Z Flip 6 tops the capacity of the two cells used to keep the lights on the Galaxy Z Flip 5 by 296mAh or 8.3%. If we used the expected typical capacity of 4000mAh for the upcoming clamshell and compare it to the 3700mAh typical capacity promoted by Samsung for the Galaxy Z Flip 5, this year’s typical 300mAh improvement would work out to be an 8.1% hike.
The rated capacity of a battery is the amount of power (in milliamp hours or mAh) the manufacturer says the cell can store and deliver. The typical capacity takes into consdideration factors such as room temperature. Most manufacturers promote the battery in their devices using the typical capacity because it provides a figure based on the actual performance of the cell under real-world conditions.