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Anyone know how to changea battery on a streamlight survivor flashlight div. 2, with the O ring bracket? - streamlight survivor led

I have already ordered the battery and remove the needle, but I will have a number of issues with the pedal I / O-ring brakcet. It looks red hexagon bolts are in place. I wonder if you are unable to overcome this, or I'm not only purchasing the right battery to know guide. I ordered the battery for the right model. The Division II with O-ring, but differs from the original battery.