Or does someone know when FP changed the battery capacity? The one on the picture has 3060 mAh, the FP shop specs state 3040mAh and another one I have has 3000 mAh.
Weird so the capacity seem to have really decreased and the specs are at least misleading if not incorrect. At the end I assume 60mAH more or less will not make a real noticable difference.
I know with some rechargeable AA batteries they state, for example, 1900mAh in one market, and 2000mAh in another market.
The first is the minimum capacity that they must meet or surpass, the second is the “typical” capacity for an average battery that might overstate in some cases, and understate in other cases.
Independent testing verifies that both different “models” have the same statistical distribution of capacities, and are thus from the same manufacturing lines.
I remember this prominently from “eneloop” batteries.
That is a long winded way to say that the FP3 batteries have not necessarily changed, but that the labelling convention has.
The only way to tell is to test a good sample size, but I just wanted to mention the possibility. I do think it is just as likely or more that they have indeed become slightly different.
Unlike standard AA batteries, i.e. sized the FP batteries are unique. The 60mA diff is likely to be a newer model hence the updated no. From F3AC to F3AC1
the production date is printed at the bottom right of the battery
the labelling changed from
3060mAh/11.78Wh/3.85V/F3AC to
3000mAh/11.55Wh/3.85V/F3AC1
the specs (3040mAh) show the typical capacity on average (actually this is stated “hidden” in the enlarged battery specs information of the FP3+ specs) and did not change