Bring Your iPhone 11 Pro Max Back to Life with SannXell Upgraded Battery Is your iPhone 11 Pro Max battery draining too fast? Does it shut down unexpectedly? It's time to replace it with our upgraded high-capacity battery. Designed specifically for the heavy user, this replacement brings flagship performance back to your device. Why Choose SannXell for iPhone 11 Pro Max? 1. Advanced Safety Technology: We prioritize your safety. Our battery features a Memory-Metal Dual-Fuse design that automatically recovers after short circuits. The upgraded 4-Way Current Diversion ensures balanced power distribution, while the connector interface is expanded by 20% to guarantee a secure and stable connection. 2. Higher Capacity, Longer Duration: With a capacity of 4500mAh, this battery exceeds the original specification (3969mAh). Enjoy extended talk time, video playback, and gaming without carrying a power bank everywhere. 3. Premium Quality: Built with high-density A+ Li-polymer cells and multi-layer aluminum foil for better heat dissipation. The Auto Power-Lock technology minimizes power loss when the phone is idle. Important Compatibility Note: This battery is ONLY compatible with iPhone 11 Pro Max (Model A2161 A2218 A2220). It will NOT fit iPhone 11 or iPhone 11 Pro. Please check your phone model before ordering. Tips for Optimal Performance: "Non-Genuine" Message: After installation, the phone may show a "non-genuine battery" message. This is normal for iPhone 11 Pro Max and does not affect function. Calibration: For best results, please calibrate the new battery: Drain it below 20%, then charge it uninterrupted to 100%, and repeat this for 3-5 cycles. What's in the Box: 1 x High Capacity Battery for iPhone 11 Pro Max 1 x Complete Repair Tool Kit (Screwdrivers, Spudger, Suction Cup, Plastic Triangular Pry Tool) 1 x Waterproof Adhesive Seal 1 x Instruction Manual