LG MS330 BL-46ZH Replacement Battery 3.8V 1450mAh

LG MS330 / K7 / Tribute 5 — 3.8V Li-ion Replacement Battery (BL-46ZH)

This is a 3.8V 1450mAh Li-ion replacement cell for the LG MS330, K7, K7 LTE, and Tribute 5 smartphones. It uses OEM part number BL-46ZH (also listed as EAC63079701) and fits the original battery compartment without modification. Swap it when the original cell no longer holds a usable charge across a normal day.

• MS330 / K7 / Tribute 5 platform compatibility: These models share the same battery bay dimensions, 3.8V voltage rail, and BL-46ZH connector pinout. One cell fits all listed variants without adapter or wiring changes.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the MS330 platform. The BMS accepted a standard charge curve, held voltage above 3.5V through the mid-range, and tripped protection at the correct low-voltage threshold without false cutoffs.
• Fuel gauge recalibration on first use: After fitting this cell, disable fast charging and run one full discharge-to-charge cycle before normal use. The MS330's fuel gauge IC was calibrated to your old cell's discharge curve — one clean cycle resets the coulomb counter against the new cell so percentage readings stay accurate.

Sudden shutdown at 20–30% on the LG MS330 after a cell swap

This is a voltage cliff problem, not a capacity problem. When the modem fires at full power or the screen brightness spikes, the new cell's internal resistance causes voltage to sag sharply. If the voltage drops below roughly 3.2V under that load, the BMS triggers a hard cutoff — the phone reads 25% but shuts down instantly. Running one full discharge cycle lets the fuel gauge IC map the actual discharge curve of the replacement cell. After that cycle, the OS-reported percentage tracks actual cell voltage more closely and the shutdowns stop.

LG MS330 won't power on after sitting in a drawer for months

Li-ion cells self-discharge at roughly 1–3% per month in storage. If the original battery sat long enough to drop below 2.5V per cell, the BMS entered lockout mode to prevent further discharge damage — and a standard charger will not wake it. Connect the phone to a low-current USB source (a PC port, not a wall adapter) and leave it for 20–30 minutes. Some BMS firmware on the K7 and Tribute 5 platform accepts a trickle at this stage and will allow the charge IC to bring the cell back above the 2.9V threshold needed to restart normal charging. If the phone remains unresponsive after 30 minutes on trickle, the original cell has likely hit permanent BMS lockout and the replacement cell in this listing is the correct next step.