LG Stylo 6 BL-T48 Replacement Battery 3.85V 3800mAh

LG Stylo 6 — 3.85V Li-Polymer Replacement Battery (BL-T48)

This is a 3800mAh Li-Polymer replacement battery for the LG Stylo 6 smartphone. It fits models LMQ730VMWA, LMQ730TMWA, LMQ730TM3A, and 19 additional Stylo 6 variants. Rated at 3.85V with 14.63Wh total energy, it matches the original BL-T48 spec.

• Stylo 6 model compatibility: All LMQ730 variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol — the 3.85V rail and BL-T48 part number apply across the entire Stylo 6 lineup regardless of carrier variant.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the Stylo 6 platform. The BMS accepted the charge IC handshake without flagging an unknown cell, and the protection circuit tripped correctly at low-voltage cutoff.
• First-cycle fast charge protocol: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's discharge curve before high-current fast charging pushes current into an uncalibrated cell.

Why the Stylo 6 reports wrong battery percentage after a cell swap

The Stylo 6 uses a fuel gauge IC that builds a discharge model from the original cell's charge history stored in its coulomb counter. When you fit a new cell, the IC is still referencing the old degraded cell's curve. Readings can be off by 10–25% until the IC recalibrates. One full uninterrupted discharge down to automatic shutdown — then a full charge to 100% — resets the counter against the new cell. After two complete cycles, percentage accuracy stabilises.

Sudden shutdown at 20–30% on the replacement cell

This happens when the display backlight and LTE modem pull simultaneous high current and the cell voltage drops below the BMS cutoff threshold — even though the gauge still shows charge remaining. On a fresh cell, this is almost always a fuel gauge calibration issue, not a defective battery. Force a full discharge by running the screen at full brightness until the phone shuts off automatically, then charge uninterrupted to 100%. If the shutdown persists past three calibration cycles, check that the battery connector is seated flat — a partially lifted connector raises contact resistance and causes the same voltage sag.