Motorola Moto G22 NH50 Replacement Battery 3.87V 4800mAh

Motorola Moto G22 XT2231 Series — 3.87V Li-Polymer Replacement Battery (NH50)

This 3.87V 4800mAh Li-Polymer battery replaces the OEM NH50 cell in the Motorola Moto G22 (XT2231-1, XT2231-2). It fits directly into the phone's battery bay and connects to the same flex connector and BMS circuit as the original. Use the Capacity figure from the product listing — 4800mAh — not third-party specs.

• XT2231-1 and XT2231-2 compatibility: Both variants share the same battery bay dimensions (90.60 × 65.00 × 4.50mm), the same 3.87V nominal rail, and the same NH50 part number. The connector orientation and BMS handshake protocol are identical across both SKUs.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the XT2231 board. The BMS accepted charge current correctly, thermal reporting stayed within normal range, and the charge IC communicated without error flags on the second cycle onward.
• Fuel gauge recalibration after install: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC build an accurate discharge curve against the new cell before high-current charging pushes load into an uncalibrated coulomb counter.

Sudden shutdown at 20–30% on the Moto G22 after a cell swap

The fuel gauge IC on the XT2231 board is calibrated to the discharge curve of the original aged cell. A fresh 4800mAh cell has a steeper voltage drop near depletion than the degraded cell the firmware expects. When modem transmit or screen brightness peaks hit, the cell voltage drops below the BMS cutoff threshold before the OS percentage reaches zero. One full discharge-charge cycle with fast charging disabled forces the coulomb counter to remap to the new cell's actual curve. After that cycle, shutdowns at 20–30% typically stop.

USB fast charge not activating on the first cycle after replacement

The Moto G22's charge IC handshakes with the battery BMS before allowing elevated charge current. On a freshly installed cell, the BMS may respond conservatively on the first cycle — the phone charges, but only at standard 5V/1A rates rather than the higher voltage profile. This is not a fault with the cell or the charger. Complete one full charge cycle from near-empty to 100% on a standard charger, then reconnect a fast-charge adapter. Fast charging typically activates from the second cycle once the BMS has logged a complete charge session. Confirm the charger output is at least 10W.