*HIGH QUALITY GRADE AAA+ AND BRAND NEW FOR IPHONE X. *CAPACITY Non-removable Li-Ion 2716 mAh battery (10.35 Wh) Charging Fast battery charging 15W: 50% in 30 min USB Power Delivery 2.0 Qi wireless charging *DOUBLE IC WITH NTC PCB OFFER OVER DISCHARGED,OVER CURRENT AND SHORT CIRCUIT PROTECTION,MORE SAFEGUARD FOR USING,LONG STANDBY TIME,LONG TALKING AND LONG LIFE. *SAFELY AND STABLE HI TECH LITHIUM-ION BATTERY,UNDERGOES DROP TEST,SMASH TEST AND ACUPUNCTURE TEST TO ENSURE NO FIRE AND EXPLOSION IN BREAKING. *GLIDED CONNECTOR,BETTER CONDUCTIVE PROPERTIES,NOT EASY TO HAVE RUST PROBLEMS