To anyone using HG2's in their ArGo, did you notice is difference in performance compared to the stock battery?
Nope. Did the research and found Panasonic batteries were the ones to use.
Yup. You can use (almost) any 18650, the power demand is relatively small. However, no 18650 available today will run it longer. Arizer uses the top pick for the job.......as you'd expect them to?
Panasonic NCR 18650B.