i just bought the M1x but i the turbo mode doesn't work . the high mode and turbo mode seem has same light level oo:oo:.
I use Trusfire 18650 2000mah battery .
Agree, had the same problem when I started out. Quality batteries are a must. Avoid xxxxfire
If it helps most companies now have branded batteries including olight. Xtar seem cheap and work well.