Features: Upgraded 4500mAh battery replacement ensures extended runtimes and full compatibility, featuring built in safety protections against overcharging and short circuits. Engineered with high grade composite component and multilayer safety mechanisms, this battery replacement set includes professional tools for secure installation while maintaining thermal stability during intensive usage. Perfect for phone repair technicians and enthusiasts requiring power solution for devices with aging batteries or sudden power failures. Restoring smartphone performances during daily commutes, or outdoor activities where consistent power is critical for device functionality. Tested through 500+ charging cycles, this OEM equivalent cell delivers 98% energy conversion efficiency and stable voltages output for prolonged operate of smartphones requiring battery replacements. Specifications: Capacity: 4500mAh Size: about. 9x7cm/3.54x2.76in Package Includes: 1 Set Phone Battery note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.