By resetting do you mean restarting? Been seeing odd behavior for sure. Put an S3 running 6.1.1 on a charger at 65%. A few hours later it was at 15%. I don’t know how it lost it’s charge while charging but it did. Had to restart to sort it out. Watch is a replacement from Apple, less than 1 month old. Also get random rejections while charging along the line of “this accessory is not supported,” but it’s a genuine Apple cable. ¯\_(ツ)_/¯.