[The AAA battery label mentions only “TYP 820 mAh”.]
Think “fake” is used to refer to the inconsistency in the charged capacity and the process of charging. The final capacity should be within +–100 mAh for 4x AAA and charging should be finished within 30 min from the first to the 4th. The final charge capacities are far too apart and one final charging was still going on after more than 1 hour from the other 3.
Also ‘Pregulla’ gave a past BLF thread on the GP where the subject line mentions ‘fake’:
Good price on GP Recyko+ 4xAAA at FocalPrice @ 6.18$ [FAKE?]