do not leave this shaver plugged in for more than hour [SEP] makes one wonder when they definitely tell you unplug the shaver and do not allow it to charge for greater than hour sounds like the old lithium ion safety problem strikes again pretty terrible outcome for forgetting to unplug the shaver one morning i guess i can go get a timer and plug it into that to make sure but for a top dollar device one would expect the engineers to design in the required charge termination cycle