Charge the battery with the charger or use a third-party charger does have other brands have their own dangers.
Maybe you are not too concerned with the use of charger artificial and felt no problems at gatget. But you know, if the voltage is out of the charger is not through the filtration process occurs with both the risk of diversion of high frequency energy. At a certain level (extreme) that can cause damaged smartphone. While common symptoms that may be experienced is a touch screen on gatget can not be operated when charging is in progress.
And if this continues without serious attention from you, then the effects that can be generated in poor touch screen is dead / damaged permanently can even explode while charging the battery with the charger is not original.