From: Chris Zach via Elec-trak <elec-trak cosmos phy tufts edu> Date: Sat, 1 May 2021 20:03:41 -0400 Yes, but I am using Anderson 50 connectors on the battery extenders and those are the ones that are getting coated with copper sulfate. Odd. Are you using their boots and covers that are intended to protect against corrosion? Ken