Sofirn HS10 Runtime

I just got a HS10 (and a SC21) and love it everything except runtime. I get only 1 hour and 20 minutes in the medium mode (200 lumens). In comparison, my Coast XPH27R can do 4 hours with the same battery (EBL 750 mAh) in medium mode (155 lumens), which means about 3 hours if 200 lumens. So, Coast's runtime is double of the HS10.

I switched to ramping mode and adjusted the brightness to about the same as the Coast. It ran 2 hours this time, indeed, only half of the Coast. Very similar...

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