After 10 years my Cannister HLX Light get WET in Hemmoor at 35meters

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I did a long search in the www and then i buy a mb sub LED cave light. I did the first use at Blaustein See near Aachen. The Cannister is small one and comes with the webbing straps to mount it over the chestbelt. To charge the rechargeable Li Mg battries i must unsrew the end of the light head. In the inside i find a phono plug. This is the connection for the light and for my charge plug. The charger need 4 hours to charge the batteries completly. The LED have the same problem as the HID lights, in water with bad vis (i mean with many particles in the water) it seems you dive in milk. It is possible to dim the LED down to 75% light power. When i donīt use the head i use the parking psoition at my right shoulder D-Ring. Together with the secondary display.
The manufacturer said the following tech. data:
Burntime at 100% 6 hours / 75% 9 hours
21 Watt LED
9,6 AH Li Mg rechargable Batterie
More Infos at mb-sub.com
I have pay the normal price as shown on the Homepage. I have a long talk with M. Bienhaus and i get NOTHING from him for these text and the pics.