In asc1, Melusine can charge only 30% (since the 100% battery changes her ascension to asc3). If Melusine starts with asc3, her battery is locked and only the npmod skill is available. If starting in asc1, Melusine can use her 100% battery and change ascensions to asc3, which functionally means the 100% charge is on asc3.
Super Aoko has 100% charge. However, she doesn't have a bordered thumbnail in the game, so normal Aoko's face is used instead.
Only on-demand battery are listed, charge-per-turn (like Cleopatra's) and conditional charges (like Summer Kiara's or Kingprotea's) are not included.