LG GD350 Replacement Battery 3.7V 650mAh LGIP-330NA

LG GD350 / GB230 / GB220 — 3.7V Li-ion Replacement Battery (LGIP-330NA)

This is a 3.7V, 650mAh Li-ion cell built to the LGIP-330NA specification. It fits the LG GD350, GB230, and GB220 candybar-style mobile phones. Voltage, connector, and physical dimensions match the factory cell exactly — 52.97 × 33.92 × 4.50mm.

• GD350, GB230, and GB220 compatibility: All three models share the same battery bay dimensions, connector pinout, and 3.7V nominal rail. The LGIP-330NA footprint was standardised across this compact LG platform, so one cell covers all three handsets without modification.
• Bench tested on actual hardware: We cycled this cell through the GD350's charge IC and confirmed the BMS accepted charge termination correctly at 4.2V. Charge current tapered cleanly in the CC-to-CV transition, and protection cutoffs triggered at the expected low-voltage threshold.
• Fuel gauge recalibration after install: On first use, run the phone from 100% down to automatic shutdown without interruption, then charge to full without removing the cable early. The GD350's fuel gauge IC maps its coulomb counter to the new cell's actual discharge curve during this cycle — skipping it causes percentage jumps for the first several days of use.

Why the GD350 reports wrong battery percentage after a cell swap

The GD350 uses a simple fuel gauge IC that tracks charge by counting coulombs against a stored discharge curve from the original cell. When you fit a new cell, that stored curve no longer matches the new cell's actual impedance and capacity profile. The gauge reads voltage and current correctly but maps them to the wrong percentage values until it relearns. One uninterrupted full discharge followed by a full charge resets the reference curve and brings percentage reporting back into alignment.

Sudden shutdown at 20–30% remaining on the replacement cell

This happens when the cell voltage drops sharply under the load spike from an outgoing call or screen-on event — a voltage cliff the gauge did not predict. A new cell with an uncalibrated fuel gauge will show 25% on screen while the actual resting voltage is already near 3.5V. When load hits, voltage collapses below the protection cutoff and the phone shuts off immediately. Let the phone complete one full discharge-charge cycle and the gauge will place the shutdown threshold at the correct state-of-charge percentage.