Got this charger on Friday. Looks great, works great and is easy to use. I didnt even read the manual. (i never do though!). Started to charge a freshly purchased 5S pack. 10 minutes later I was disturbed by the loudest warning buzzer known to man! It seems our family cat had thought the charger was a nice warm place to have a nap on top of. And accidently kicked the discharge leads out of the charger setting of the charge warning buzzer. An excellent and safe charger. Would recomend to anyone!