Li3949T44P8h806459 5000mAh 3.89V Li-ion Replacement Battery for ZTE Axon 40 Ultra A2023P 80W Fast Charging

Description

Battery model: Li3949T44P8h806459
Capacity: 5000mAh
Rated voltage: 3.89V
Charge limit voltage: 4.45V
Battery type: Li-ion (Grade A cells)
Compatible with: ZTE Axon 40 Ultra (A2023P, A2023PG, A2023PH), Axon 40 Ultra Space Edition
Not compatible with: Nubia Z50 / Z50S (uses same model number but different connector — see our other listing)
Package include: 1 x battery
Restore the flagship power of your ZTE Axon 40 Ultra with this Li3949T44P8h806459 5000mAh replacement battery. The Axon 40 Ultra features a 6.8-inch AMOLED display, Snapdragon 8 Gen 1 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 use. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE, RoHS, and UN38.3 certified for safety compliance.
⚠️ Critical – Check Your Connector Type Before Ordering: This battery model (Li3949T44P8h806459) comes in two different connector versions. One version fits ZTE Axon 40 Ultra (this listing). The other version fits Nubia Z50/Z50S. 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 Nubia Z50 or Z50S, please check our other listing for the correct connector version.
Technical Details for Axon 40 Ultra Owners: The Li3949T44P8h806459 5000mAh battery replacement for ZTE Axon 40 Ultra maintains the original 4.45V charge termination voltage (3.89V nominal) and uses low-resistance cells to ensure stable power delivery. Unlike lower-quality alternatives, this ZTE Axon 40 Ultra 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 ZTE Axon 40 Ultra has a sealed design 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 Axon 40 Ultra: 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 ZTE Axon 40 Ultra 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.