New battery, new smartphone charging frequently a day, drop 10 quickly, power off suddenly, run out off battery and so on. Tired of a dead phone or such problem you need a new battery. Bring life back to your old phone. New battery, new phone. Enjoy new journey. Important notes during removing battery form your phone, if the old adhesive is torn off accidentally, please dont puncture or bend the battery excessively, otherwise it will be easy catch a fire. Please heat the adhesive 2 minutes slightly by a fan to loose it or put in the refrigerator to deactivate the glue. Then carefully remove the battery. Dont keep charging battery for a long time, please dont forget to unplug charger once it is charged full. Overcharge of the battery, which causes a chemical reaction between the electrodes and the electrolyte, resulting in the release of heat and gases that expand inside the battery, causing the casing to swell or even to split open. The warranty does not cover the following wear and tear swollen battery due to overcharging physical damage incorrect application. Please use phone original charger and cable to charge the battery for optimal performance and safety use. And generally 3 to 4 hours to charge full, do not over charge it for long time.