[High Capacity iPhone X Battery] 3500mAh iPhone X Replacement Battery delivers about 30% longer battery life than original iPhone X battery (2716mAh). Advanced lithium-polymer technology delivers 1200+ charge cycles while maintaining stable voltage output. Stop low-battery anxiety and enjoy non-stop streaming, gaming, and multitasking without constant charging. [Complete DIY Installation Kit] Our long-lasting iPhone X Battery Kit Includes premium pry tools, screwdrivers, adhesive strips and step-by-step video guide (search the video on amazon). 97% customers successfully installed within 15 minutes. 100% compatible with all iPhone X models (A1865, A1901, A1902), it’s precision-engineered to match the original phone's design. [Fast & Safe Charging] Built-in UL/CE/FCC certified battery cell, this 3500mAh iPhone X battery is perfect with Over-voltage protection, Temperature control IC, Short-circuit prevention and Electrostatic discharge shield. No bulkiness, no overheating -- just a seamless fit and like-new performance! [Precision Compatibility] iPhone X extended battery is engineered specifically for iPhone X models A1865/A1901/A1902. 0.03mm ultra-thin battery flex cable ensures perfect fit. This certified iPhone X battery is NOT compatible with iPhone XS/XR/11 or later models. The exact model number can be found on the back of your phone. [Warranty & Customer Service] All iPhone X battery replacements are strictly QC double tested and 100% in good condition before shipping. Backed by a 12-month warranty and 24/7 support, it’s the smart, sustainable choice for eco-conscious users. Any question, please kindly contact us. X Compatible 3500mAh batteries have 29% more capacity than the original battery, storing more energy and providing longer standby time. This means that compatible batteries do not have to be recharged as often as before.