Features & Details Made of grade a premium battery cells, long lasting and durable. Build-in microchip to prevent over-charging, over-discharging and over-heating, which will help lengthen battery life. Strict quality-control. Ce, rohs and ul certified. Long battery life cycle. This is a import unit and it comes without retail packaging, qc pass, professional needed for installation. Please drain all the power of the battery for the first 5 times before charging, and then take a full charge. Thus the battery can be reached the optimum effect of using. Please note that its full effect and longevity is only achieved after 3 to 5 complete charge and discharge cycles, because li-on battery become stable after few uses. Caution- do not open, crush, puncture. Short external contacts or dispose in fire or water. Risk of fire, explosion and burn. Do not open, crush, heat. We take full responsibility of our product we will send you a replacement within warranty period if the product is defective. 3 months warranty from the date of deliveries, pls contact us if you have any issue. Description 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, cau