Appearantly. Keep in mind that the Acebeam 5100mah 21700 is a high capacity cell, not a high drain. I’m not sure what it’s base cell is, but it’s safe to say it’s not rated for over 10A continous (it might be a Samsung INR21700-50E). The EC65 light it’s used in draws about 15A, but only for a minute or less at a time. The protection circuitry still adds a bit of extra resistance so the voltage sag is greater compared to an unprotected cell. Both of these reviews have interesting battery tests. Maukka’s EC65 review. Toobadorz EC65 review.
Note that the EC65 has single springs on each end while drawing 15A. This light could definitely use these Beryllium Copper springs!