Does anyone recognize the make/model of this charger? A sticker on top says 72v 6A. The open-circuit output is 89v, and I recall it going up to 86v max when connected to a pack. There are 3 pots on the board labeled VR1-3 and a blank spot for VR4. Maybe one is the max output voltage, one is the knee, and the other... ? Just wanted to check with the experts before I go screwing up the settings
Depending on how I configure the replacement pack, I may need the output to max out at 78v.
BTW - do any here by chance recognize this stretch of curvy-straighty funness?