Pokemon sword, in-game text says " It boosts Attack if the holder is hit with an Electric-type attack. It can only be used once".
Everytime I get 'Cell Battery' to activate, it only boosts Sp.Attack. >:(
The flavour text is correct. As Robloxiansceptile said, lightning rod activates first. Pinchurchin had a cell battery. Aeigislash’s attack got boosted, not its SpA.