Li3949T44P8h806459 5000mAh 3.89V Li-ion Replacement Battery for Nubia Z50 Z50S NX711J 80W Fast Charging

Description

Battery model: Li3949T44P8h806459
Capacity: 5000mAh
Rated voltage: 3.89V
Charge limit voltage: 4.48V
Battery type: Li-ion (Grade A cells)
Compatible with (this version): Nubia Z50 (NX711J), Nubia Z50S
Not compatible with: ZTE Axon 40 Ultra (uses same model number but different connector — see our other listing)
Package include: 1 x battery
Restore the flagship performance of your Nubia Z50 or Z50S with this Li3949T44P8h806459 5000mAh replacement battery. The Nubia Z50 series features a 6.67-inch 144Hz AMOLED display, Snapdragon 8 Gen 2 processor, and supports 80W fast charging — reaching 100% in approximately 30-40 minutes. This Li-ion battery delivers the rated 5000mAh capacity for all-day 5G connectivity, gaming, and photography. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE and RoHS certified for safety compliance.
⚠️ Critical – Check Your Connector Type Before Ordering: This battery model (Li3949T44P8h806459) comes in two different connector versions. One version fits Nubia Z50/Z50S (this listing). The other version fits ZTE Axon 40 Ultra. The connectors are NOT interchangeable. Please remove your old battery and compare the connector with our product images before purchasing. If your original battery connector does NOT match the picture, this battery is NOT compatible with your device. This is the only way to ensure correct fitment. If you have a ZTE Axon 40 Ultra, please check our other listing for the correct connector version.
Technical Details for Nubia Z50 Owners: The Li3949T44P8h806459 5000mAh battery replacement for Nubia Z50 maintains the original 4.48V charge termination voltage (3.89V nominal) and uses low-resistance cells to ensure stable power delivery during gaming and heavy use. Unlike lower-quality alternatives, this Nubia Z50 battery replacement supports the original 80W fast charging protocol. The built-in protection circuit module (PCM) guards against over-charge, over-discharge, short circuit, and over-current. For best longevity, avoid frequently draining the battery below 10% — lithium-ion cells prefer partial discharges between 20% and 80%.
Installation Guidance: The Nubia Z50 and Z50S have sealed designs with strong adhesive. Professional installation is strongly recommended. If you choose to replace the battery yourself: 1) Power off the device completely. 2) Heat the back cover to soften adhesive (use a heat gun at no more than 70°C). 3) Carefully pry open the back cover with a suction cup and plastic spudger. 4) Remove the cover screws and disconnect the battery connector by pulling the plug (not the wires). 5) Remove the old battery (lightly adhered), connect the new Li3949T44P8h806459 battery, then reassemble. 6) If the device doesn’t power on after replacement, leave it connected to the original 80W charger for 10-15 minutes to activate the protection circuit. Improper installation may damage the display.
Battery Care for Nubia Z50: For maximum lifespan, keep battery level between 20% and 80% for daily use. Use the original 80W charger and cable for optimal charging. If storing the device for more than 2 months, keep the battery at approximately 60% charge. Avoid leaving the phone in hot environments — heat accelerates battery degradation. Stop using immediately if the battery shows any swelling. For optimal Nubia Z50 battery replacement calibration, perform one full discharge-recharge cycle (drain until auto-shutoff, then charge uninterrupted to 100%) after installation to help the system calibrate battery level reporting.