Coolpad Note 3 Lite CPLD-382 Replacement Battery 3.8V 2500mAh

Coolpad Note 3 Lite — 3.8V Li-Polymer Replacement Battery (CPLD-382)

This is a 3.8V 2500mAh Li-Polymer replacement battery for the Coolpad Note 3 Lite smartphone, including variants 8298, 8298-L00, and 8298-A01. It replaces the original CPLD-382 cell and restores full device operation when the factory battery has degraded through charge cycles or lost the ability to hold voltage under load.

• Note 3 Lite variant compatibility: The 8298, 8298-L00, and 8298-A01 share the same battery bay dimensions and flex connector pinout, so all three accept this CPLD-382 cell without modification. The BMS communicates over the same two-wire interface across the entire 8298 series.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the 8298 platform. The BMS accepted the cell without a fault state, charge termination triggered correctly at 4.35V, and low-voltage cutoff engaged at the expected threshold under screen-on load.
• Fuel gauge recalibration on first cycle: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. The fuel gauge IC on the Note 3 Lite is calibrated to the discharge curve of the old cell — giving it one clean cycle against the new cell lets the coulomb counter reset its reference points before high-current charging begins.

Why the Note 3 Lite reports wrong battery percentage after a cell swap

The Note 3 Lite uses a fuel gauge IC that tracks charge state by measuring cumulative current flow against a stored discharge curve. That curve was built from the original CPLD-382 cell's characteristics over hundreds of cycles. A new cell has a steeper, tighter voltage curve, so the IC maps incoming data against the wrong reference and reports an inaccurate state of charge. One full discharge from 100% to automatic shutoff, followed by an uninterrupted charge to 100%, forces the IC to rewrite its reference map. Until that cycle completes, percentage readings may appear frozen, jump unexpectedly, or read 100% when the cell is not fully charged.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage cliff failure, not a capacity problem. The Note 3 Lite's modem and display draw combined current spikes that cause the cell voltage to momentarily drop below the BMS cutoff threshold — even when the reported percentage still shows charge remaining. It happens more often when the fuel gauge IC is still calibrated to the old cell curve, because the displayed percentage does not reflect the real voltage state. Run one full calibration cycle first. If shutdowns continue after calibration, check that the battery connector is fully seated, since a high-resistance contact accelerates voltage sag under load — the cell voltage at shutdown should not drop below 3.4V under normal screen-on use.