I am curious if anyone else has the same problem with there s1r. My light is carried in pocket no clip with other items. I put it on lock mode so I don’t accidentally drain battery. When I go to use it about75% of time it’s not on lock and acts like battery is dead. I unscrew the battery cover a little ways and tightened back down, hold power button then a second or 2 it comes on and works fine till I put back in pocket. I have 2 identical s1r and they both do this.