About this replacement
LG V60 ThinQ Series — 3.85V Li-Polymer Replacement Battery (BL-T46)
This is a 3.85V, 4900mAh Li-Polymer replacement battery for the LG V60 and V60 ThinQ 5G smartphones, including model LMV600VM. It replaces OEM part numbers BL-T46 and EAC64638301. Swap it in when the original cell has degraded and the phone can no longer hold a charge through a normal day.
- V60 ThinQ 5G platform fit: The V60 lineup — including LMV600VM and the V60 ThinQ 5G variants — all share the same BL-T46 footprint, connector pinout, and BMS handshake protocol. The fuel gauge IC communicates over the same I²C bus across these models, so the battery registers correctly in the OS without modification.
- Bench tested on actual hardware: We ran this cell on a V60 ThinQ unit and confirmed the BMS accepted the handshake, the OS displayed charge state without error flags, and the charge IC cycled through CC/CV phases cleanly at both standard and fast-charge rates.
- First-cycle fast charge protocol: On first use after installation, disable fast charging for one complete discharge-charge cycle. This gives the fuel gauge IC time to recalibrate its coulomb counter against the new cell's discharge curve before high-current charging pushes into an uncalibrated state.
Sudden shutdown at 20–30% on the V60 ThinQ after a cell swap
This is a voltage cliff issue, not a capacity issue. The fuel gauge IC on the V60 still holds calibration data from the old degraded cell, so its voltage-to-percentage curve is wrong. Under load from the 5G modem or the high-refresh display, the new cell's actual terminal voltage drops faster than the IC expects, and the protection circuit cuts power before the gauge reaches zero. Run one full discharge to auto-shutdown followed by a full charge to 100% without interruption. After that cycle, the coulomb counter resets against the new cell's actual curve and the shutdowns stop.
USB-PD fast charge not triggering on first charge after replacement
On the first charge cycle after a BL-T46 swap, the V60's charge IC may fall back to standard 5V charging and refuse to negotiate the higher voltage PD contract. This happens because the BMS on the new cell has not yet completed its initialisation handshake with the phone's charge controller — a safety hold that prevents high-current charging into an unverified cell. Plug in using the original LG fast-charge adapter, let the first charge complete fully without unplugging, and do not use a USB hub or third-party cable for this cycle. After one complete charge, the fast-charge protocol re-engages at the correct voltage on subsequent cycles.