Now that I actually clicked your links 
I can see it does list the eagletac as panasonic 3400. Probably panasonic ncr18650b. The eagletac is good if your light has trouble fitting protected batteries. I do blieve it may be the shortest button top protected panasonic 18650 available.
EagleTAC and Callieās Kustoms are both very good. Very good batteries inside and very good protection. If you donāt care to search around to save a few dollars go for them.
Mtnelectronics has good prices link 18650s. He is member āRMMā and has a sales thread on BLF.