Hi Brian, Thanks for the real world tests.    I did a final test as promised on a brand new FujiFilm NP-50 from B&H and it tested out as 1.050 Ah (1050 mAh) which is within a few percent of the Lectro LB-50's and the previous year old (?) Fuji NP-50's directly from FujiFilm. One can assume all these batteries are OEM'd from Panasonic. I can say that you will get the best operating time possible from the LB-50 from Lectro or the Fuji NP-50 from B&H.  Different battery brand