by old4570...
https://budgetlightforum.com/t/-/4621?destination=node%2F5348&bc87_name=78
https://budgetlightforum.com/t/-/1108
A thread of tailcap amp measurements...
https://budgetlightforum.com/t/-/72495
I have this drop in wrapped in copper and inside a SolarForce L2P and love it.