This is a public service annoucement.

If you get to the jetty with your fishing rod, squid jigs, head torch, and bucket, and your head torch gives 2 flashes and refuses to turn on, it is NOT out of batteries.

It is in travel mode.

As I learnt 2 hours later, when trying to charge an already charged head torch back at my desk.

If you find yourself with a torch that flashes twice and turns off...  HOLD THE BUTTON FOR TEN SECONDS.  it will flash again, you let go the button, and all is good again with the world.

Lesson learnt.

I hope this helps a future fishing expedition.