Grade A+ battery,Brand new 0 Cycle. ISO9001/FCC/CE/MSDS/UL /un38.3 Certificated. This replacement battery has an integrated microchip to prevent overcharging and lengthens battery life. Best replacement battery with long-time standby and talk time. Light weight, high capacity and low impedance.For iPhone 7 Plus only, High Quality, 3 Year Wanrranty, Capacity: 2910mAh Voltage: 3.82V Working Temperature: -10~40? Limited Charge Voltage:4.35V Life Span: After 300 times cycle capacity retention= 80% Type: Internal Li-ion Polymer Battery Chemistry: Li-ion Weight: about 50g Size:110*49*3.4mm 1.Due to limitations on space, the instruction only provides some key steps,it is unable to describe vividly how to replace the battery. In order to replace the battery more easily, we strongly recommend you to watch more relevant video about replacing the battery on YouTube before you replaced. Especially pay attention to the details of removing adhesive strip. 2.Before you begin, discharge your battery below 20%. A charged lithium-ion battery can catch fire and/or explode if accidentally punctured. 3.If you are unable to turn your phone on after installed, please try to reconnect the battery connector and charge the phone. 4.At the first beginning, the battery will drain quickly, this issue is caused due to the li-ion of a new battery is unstable, it will become normal after long-term use. To use the battery longer, please use up all the energy of battery until your phone shuts down automatically, then charge it for up to 10 hours, repeat this 3-5 times, thus the battery can be reached the optimum effect of using.
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