ZTE Blade A610 Compatible Battery 466380PLV 3.8V 4000mAh

ZTE Blade A610 / Yuanhang 4 — 3.8V Li-Polymer Replacement Battery (466380PLV)

This is a 3.8V, 4000mAh Li-Polymer replacement battery for the ZTE Blade A610, Yuanhang 4, BA610, and BA610T smartphones. It uses OEM part number 466380PLV and matches the original cell's dimensions at 81.40 x 62.50 x 4.50mm. Fit this battery when the original cell can no longer hold a charge or causes unexpected shutdowns.

• Blade A610 and BA610 series fit: These models share the same battery bay dimensions, 3.8V power rail, and connector pinout — one cell covers the full group without hardware modification.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the Blade A610 platform. The BMS communicated correctly with the phone's charge IC, accepted current without tripping protection, and held voltage stable under combined modem and display load.
• First-cycle calibration on the Blade A610: On first use after installation, disable fast charging for one complete discharge-charge cycle. This allows the phone's fuel gauge IC to recalibrate its coulomb counter against the new cell's discharge curve before high-current charging is introduced into an uncalibrated state.

Why the Blade A610 reports wrong battery percentage after a cell swap

The Blade A610 uses a fuel gauge IC that builds its charge model from the old cell's discharge curve. When a new cell goes in, that learned curve no longer matches the actual chemistry. The result is percentage readings that drift — the display may show 60% while the true state of charge is much lower or higher. One full discharge to automatic cutoff, followed by a complete charge to 100%, resets the coulomb counter and lets the gauge IC map the new cell accurately.

Sudden shutdown at 20–30% on the replacement cell

This happens when the phone's modem or display draws a current spike the cell cannot sustain at low state of charge, causing voltage to dip below the BMS protection threshold — the phone cuts out even though the gauge still shows charge remaining. A freshly installed cell with an uncalibrated fuel gauge IC makes this worse, because the reported percentage does not reflect the actual voltage. Run one full calibration cycle first, then charge to 100% before any extended use. If shutdowns continue past the first calibration cycle, check that the battery connector is fully seated — a partial connection increases internal resistance under load.