Ridgid drill/driver kit with 2, 2.0AH batteries

[sternwake]

When i was using my 9.6v craftsman a lot on my GC-2s, which were also powering lights and fans, id notice if the leds were maxed out brightness wise, the drill would dim the leds noticeably as e pected, but they seem to flicker far brighter for a few MS, when letting abruptly off the trigger.

My craftsman drill makes a high pitchedx whine at low trigger/rpm levels. I had a snap on ferrite on the 12awg, and noticed it too , next to the battery 8 feet away, emanating that same high pitched whine , at the same volume, as which came from the drill itself.

I removed the snap on ferrite and decided to only use the craftsman drill on my 18 or.22 ah agm batteries with no other loads attached to them...

No other.loads seem any worse.off from being in parallel with the drill, but perhaps it is a.cumulative stressor.of magic bits on circuit Board.