Doogee X5 Max Pro Replacement Battery BAT16484000 3.7V 2400mAh

Doogee X5 Max Pro — 3.7V Li-ion Replacement Battery (BAT16484000)

This is a 3.7V, 2400mAh Li-ion replacement cell for the Doogee X5 Max Pro smartphone. It replaces OEM part BAT16484000 directly. Fit the replacement when the original cell shows capacity fade, unexpected shutdowns, or fails to hold charge.

• X5 Max Pro cell fit: The BAT16484000 uses a specific contact layout and dimensions (79.84 × 55.45 × 5.85mm) tied to the X5 Max Pro chassis. The BMS handshake on this device is straightforward — no encrypted authentication chip — so the replacement cell communicates correctly with the charge IC without additional pairing steps.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the X5 Max Pro platform. The BMS accepted the cell on first connection, charge termination triggered correctly at 4.2V, and cutoff activated cleanly at the low-voltage threshold without false triggers.
• Fuel gauge recalibration after swap: After fitting this cell, disable fast charging if available and run one full discharge down to automatic shutdown, then charge uninterrupted to 100%. This gives the fuel gauge IC one complete cycle to map the new cell's discharge curve before reporting accurate percentages.

Sudden shutdown at 20–30% on the X5 Max Pro after a cell swap

The X5 Max Pro's fuel gauge IC stores a charge curve calibrated to the original cell. A new cell has a different internal resistance profile, so the IC misjudges remaining capacity. Under load — particularly when the modem transmits or the screen peaks — the new cell's voltage drops faster than the IC expects, triggering a low-voltage shutdown well above 0%. One full discharge-charge cycle corrects the stored curve and eliminates premature cutoffs.

Device won't power on after the replacement cell sat in storage

Li-ion cells self-discharge during storage. If the BAT16484000 shipped or sat installed for several weeks without use, the cell voltage may have dropped below 2.5V — the point at which the BMS locks out to prevent damage. The phone will show no response to the power button. Connect the original charger and leave it for 20–30 minutes without pressing anything; the charge IC will trickle current into the cell until the BMS unlocks, typically recovering at around 3.0V before normal charging resumes.