Here is the professional, SEO-optimized English product description for your Infinix Hot 12 Pro (BL-49GX) replacement battery:

Infinix Hot 12 Pro Replacement Battery (BL-49GX) – 100% Premium Quality

Is your Infinix Hot 12 Pro draining fast, dropping percentages unexpectedly, or failing to hold an all-day charge? Bring back its original factory-fresh stamina with our premium-grade BL-49GX replacement battery. Manufactured to match exact original performance benchmarks, this high-capacity battery provides the steady, efficient power supply your phone needs to handle daily multitasking, social scrolling, and media playback just like day one.

Key Features:

• Flawless Physical Fit: Tailored specifically for the Infinix Hot 12 Pro (Battery Model: BL-49GX / Model: X666), ensuring a perfect physical fit and tight connector alignment with your phone's internal logic board.

• True 5000mAh Power Capacity: Packs a full standard 5000mAh capacity to completely revive your smartphone's multi-day standby endurance and extended screen-on hours.

• Advanced Smart IC Protection: Features a built-in intelligent safety microchip that actively protects against over-charging, over-discharging, unexpected overheating, and short-circuits to secure your phone's hardware.

• High-Density Lithium Polymer Cells: Built using advanced Lithium-ion polymer technology for ultra-stable voltage output, entirely eliminating erratic percentage jumps and sudden unexpected power cuts.