OK, out of four of these 20A Sakers I ordered, two of them exhibited normal behavior and two were funky. That was bad news for me, but perhaps not as bad for the vendor. He says he hasn't had any other negative reports besides mine. That could mean I was just unlucky in getting the two bad ones, and the current supply might not all be affected. Of course, if people ordered these and connected them only to 3S or larger packs, they might never know that there was a problem with 2S packs.