It is said that in some of the ancient tribes of Africa, while her husband to go on a long journey, his pudendal suture needle his wife until after getting home apart … … So, how can you think you should differentiate between used and unused batteries?=========== Hello Kitty Samsung Note 3 caseXu Weimin from designers (sound, Weimin Xu) and others ideas.The battery design stems from a common trouble in your life – Hello Kitty Samsung Note 3 caseChanged battery, might casually throw drawer or put on the table,Come to think of it some day, but found no longer unable to tell, whether it is a new battery or batteries … …Designer's idea is simple,In battery's head with a plastic ring,In the new battery's State, which pull ring sticks to the head–this time and batteries without distinction of any kind,Then, when you use it,Handy "ring pull" opening, a movement, plays two roles:1, the battery has been used up; 2, when removed from the battery compartment, pull it open "ring pull" mentioned, battery out, don't pull the pull on the inside, maybe even hard painted nails pull is broken … …Very convenient, right?In fact, I write to you, love rare or have a better idea:Taking into account that "pulls" the battery has no effect, so a lot of people will forget to pull up pull-ring,So,Why not make this "ring" covers the entire head or tail?So, it can also become an insulating or leakage prevention measures,And "forced" to pull up when you use the "pull".Designer: Xu Weimin (sound, Weimin Xu), Xu Tao (sound, Tao Xu), Li Luanqi (sound, Luanqi Li), Cai Minghan (sound, Minghan Cai)[via]