However, if there were lots of suspended particles in the water diving, then it is with this 100W burner about as if you drive with high beam in fog in the car .... so I use then for such murky circumstances a 50W burner.
But as I said:
This 100W burner here all times is worth the money!
How many hours the burner "by holding" can not say exactly. With the 100W burner of Accu keeps the diving lamp for about 1 hour. If I then, the lamp on the charger times longer have (trickle charge), I turn the lamp here and there sometimes without a dive to unload the Accu and after recharge.
I guess the last burner has held about 60 hours ..... for me at the price offered here is absolutely ok.