TL;DRRemove the old outdated battery indicator and use an updated battery indicator in the blank space above the armor slot.
What ?This change will remove the old battery indicator which stands out as eyesore against the new interface.
The new design of the battery that was shown in the images in Factorio Friday Facts #289 should be used for a consistent design throughout the interface.
The bare and unused gap above the armor slot should be used for the location of the new battery indicator. When no batteries are equipped in the power armor then it should either be left blank or a dull battery placeholder should be present. To avoid confusion with new players the area could be left as blank until the Personal Battery is unlocked in the tech tree.
Heres a quick and rough example I put together:
As of now the batteries used in the concept above and the battery found in this image from FFF #289 only has three bars which isn't very helpful compared to having multiple bars or how it is currently done with one single bar that grows or shrinks.
- Removing and old UI element that does not match the style anymore so the UI can look nice.
- Having consistency between similar elements throughout the interface.
- Making use of the wasted space left behind by the removed pickaxe.