About this replacement
LG G6 Series — 3.8V Li-Polymer Replacement Battery (BL-T32)
This is a 3300mAh, 3.8V Li-Polymer replacement battery for the LG G6 smartphone. It fits the G6, G6 TD-LTE, LS993, AS993, and over two dozen additional G6 variants. OEM part numbers are BL-T32 and EAC63438701.
- G6 variant compatibility: The LS993 (Sprint), AS993 (AT&T), and TD-LTE variants all share the same 3.8V cell format, connector pinout, and BMS communication protocol — one cell works across the entire G6 platform.
- Bench tested on actual hardware: We ran this cell in an LG G6 and confirmed the BMS handshake completes normally, charge current ramps correctly through CC/CV stages, and the fuel gauge IC reads cell voltage without fault codes.
- 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 against the new cell's discharge curve before high-current charging pushes into an uncalibrated state.
Why the G6 reports wrong battery percentage after a cell swap
The G6 uses a coulomb counter and a stored discharge curve to estimate state of charge. When you replace the cell, the coulomb counter is still calibrated to the old cell's curve. The phone reads voltage correctly but maps it to the wrong percentage. One full discharge to automatic shutdown, followed by an uninterrupted charge to 100%, resets the curve and corrects the readout.
Sudden shutdown at 20–30% on the replacement cell
This happens when the cell voltage drops sharply under modem or display load — what's called a voltage cliff. The G6's processor and LTE modem together draw enough current to pull cell voltage below the BMS cutoff threshold before the fuel gauge reports 0%. The BMS trips the output to protect the cell even though the percentage looks fine on screen. Charge the phone to 100%, then run one full cycle without fast charge — if the shutdowns stop, the gauge has recalibrated. If they continue, check that cell resting voltage reads at least 3.85V after a full charge.