flat round interface: charging is not divided into front and back(扁圆接口：充电不分正反面) trapezoidal interface: charging points front and back(梯形接口：充电分正反面)

fast charge [1 pack] length: 1 m(快充【1条装】长度：1米) fast charge [2 pack] length: 1 m(快充【2条装】长度：1米) fast charge [3 pack] length: 1 m(快充【3条装】长度：1米) fast charge [1 pack] length: 1.5 m(快充【1条装】长度：1.5米) fast charge [2 pack] length: 1.5 m(快充【2条装】长度：1.5米) fast charge [3 pack] length: 1.5 m(快充【3条装】长度：1.5米) fast charge [1 pack] length: 2 m(快充【1条装】长度：2米) fast charge [2 pack] length: 2 m(快充【2条装】长度：2米) fast charge [3 pack] length: 2 m(快充【3条装】长度：2米) fast charge [1 pack] length: 0.3 m(快充【1条装】长度：0.3米) mix and match [1 m +1.5 m] 2 pieces in total(混搭【1米＋1.5米】共2条) mix and match [1 m +2 m] 2 pieces in total(混搭【1米＋2米】共2条) mix and match [1.5 m +2 m] 2 pieces in total(混搭【1.5米＋2米】共2条)