Hello, I have a fairly old D4v2 and have been using an array of different 18650 batteries. All from reputable brands. Mostly Samsung's. 30Q's and 25R's (25R's taken from dead Milwaukee battery) my light takes them from 4.2 volts to 3 in a matter of roughly an hour, sometimes even less. Sometimes it's killed the batteries so much they won't charge anymore so it took too much. My D4SV2 also does not last very long. I know I'm using an undersized battery for it but I would expect more life from it. Has anyone else experienced this? Any input would be great. Thank you!
by CommunityNecessary18
