EAGLETAC G25C2: one question about turbo

Hi, I have almost decided to choose EAGLETAC G25C2 and before buying it I’d like to ask a question about turbo mode output. Does also EAGLETAC G25C2, like a few oother flashlights, have some problems in turbo mode with one 18650 battery? I know a few other flashlights work better with two CR123A batteries; in turbo mode they dim a little bit the light with one 18650. For EAGLETAC G25C2 is the same? Thanks for your suggestions.