In my copy but the battery is not to be used. Was wondering already, that is loaded so quickly (estimated half an hour). But then the test even the nasty surprise: The lamp lasted only a few minutes.
OK, again loaded but the same game: At the lowest brightness (1 of 3 LEDs) the lights went out after exactly 5 minutes and 30 seconds.
Of course there is no point the greatest brightness. Possibly usable with handicraft and other batteries, but not my version. Obviously there here anyway large variations with regard to the battery capacity and, consequently, the burn time, when you read the other reviews.
