Nokia BA-L4M Replacement Battery 3.8V 1450mAh Li-ion

Nokia 220 4G / 225 / 235 4G / 3210 4G — 3.8V Li-ion Replacement Battery (BA-L4M)

This is a 3.8V, 1450mAh Li-ion cell built to the BA-L4M specification. It fits the Nokia 220 4G, 225, 235 4G, and 3210 4G — entry-level Nokia handsets that share the same battery bay dimensions and connector pinout. Swap it in when the original cell can no longer hold a usable charge or causes unexpected shutdowns.

• Multi-model fit — 220 4G, 225, 235 4G, 3210 4G: These Nokia handsets share the same 69.00 × 40.20 × 4.30mm cell format and the same three-pin connector layout, which is why one BA-L4M part number covers the range. The BMS handshake voltage and cutoff thresholds are consistent across all listed models.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Nokia 220 4G unit. The BMS held the low-voltage cutoff at 3.0V and accepted a standard 5V/1A charge input without tripping the protection circuit. Capacity read stable at 1450mAh across three consecutive cycles.
• Fuel gauge recalibration on first use: After installing this cell, disable fast charging for the first complete discharge-to-charge cycle. The Nokia fuel gauge IC was calibrated against your old cell's discharge curve. One full cycle at standard current lets it map the new cell's voltage profile before higher charge rates are applied.

Sudden shutdown at 20–30% on the Nokia 220 4G after a cell swap

This is a voltage cliff issue, not a capacity fault. When the 4G modem and display draw current simultaneously — during a call, mobile data burst, or screen-on activity — the new cell's internal resistance briefly causes the terminal voltage to sag below the BMS cutoff threshold, even while the fuel gauge still reports charge remaining. The phone shuts off because the hardware protection circuit sees a sub-3.0V event. Run one full discharge cycle without fast charging to let the fuel gauge IC recalibrate its state-of-charge model to the new cell's actual discharge curve. After that cycle, the reported percentage will align more closely with the real cutoff point.

Phone shows wrong battery percentage after installing the BA-L4M

The Nokia 220 4G uses a fuel gauge IC that tracks capacity using a coulomb counter calibrated to the original cell's impedance and voltage curve. When a new cell goes in, the stored calibration data no longer matches the cell's actual discharge profile, so the displayed percentage drifts — often reading 100% for an extended period then dropping sharply. The fix is one complete discharge-charge cycle at standard 5V/1A input with fast charging disabled. After that cycle, the coulomb counter re-anchors its zero and full references to the new cell and percentage readings stabilise.