Back at the start of this week details of the Samsung Galaxy S6 battery leaked out with a report suggesting it'll be reduced to a 2600mAh pack.
The Samsung Galaxy S5 had a 2800mAh battery, but if new pictures from the Weibo social networking site are to be believed the new battery will have a 2600mAh capacity and the model number EB-BG925ABE.
Samsung Galaxy S5 battery replacements come with model numbers such as EB-BG900BBC so it's looking likely these will be made directly for the Galaxy S6 or even the Galaxy S6 Edge.
It sounds like bad news for all fans of Samsung but there is a silver lining: the downgrade in size is likely to help it accommodate the long-sought-after metal uni-body design.
A slimmer handset?
Rumours also suggest the Exynos 7420 SoC chipset that is thought to feature in the Galaxy S6 goes lightly on the battery.
The Galaxy S6 is also said to have the same 5.1-inch Quad HD Super AMOLED display that previously featured on the Galaxy S5 LTE-A and battery testing on that phone shows it doesn't use much power, it actually uses as much as its 1080p counterpart.
That alongside some software and hardware optimisations may make for a better battery life even though it's packing a smaller capacity cell.