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Motorola Moto G73 5G PV50 Replacement Battery 3.89V 4850mAh

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From $40.99 USD $50.99
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Fits Motorola Moto G73 5G and XT2237 variants, replacing OEM part numbers PV50 and SB18D61156.
This 3.89V, 4850mAh Li-Polymer cell delivers the same charge capacity as the original, powering the processor, modem, and display through a full day of typical use.
Connector slots into the factory battery bay with no modification; locking tab sits flush against the retention clip on the left edge.
We bench-tested the BMS handshake on a G73 5G motherboard at room temperature; the fuel gauge IC accepted the cell and held calibration through a full 0–100% discharge cycle without voltage collapse or cutoff errors.
On first charge after installation, disable fast charging and run one complete discharge-charge cycle at standard 5V current — this lets the coulomb counter recalibrate against the new cell's discharge curve before high-current USB-PD charging resumes.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.89V

Amp

4850mAh

Motorola Moto G73 5G / XT2237 — 3.89V Li-Polymer Replacement Battery (PV50)

This 3.89V, 4850mAh Li-Polymer cell replaces the OEM PV50 battery in the Motorola Moto G73 5G (XT2237). It matches the original cell dimensions at 86.60 x 64.00 x 4.60mm for a direct fit within the chassis. Capacity is 18.87Wh — identical to the stock specification.

  • Moto G73 5G / XT2237 fitment: Both model designations run the same power rail, connector pinout, and BMS handshake protocol, so one cell covers the full XT2237 production run regardless of regional variant.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on a G73 5G unit. The BMS accepted the cell without fault codes, and the charge IC stepped through trickle, CC, and CV phases as expected.
  • First-cycle fast charge protocol: On first use after installation, disable fast charging and complete one full discharge-charge cycle at standard rate. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's discharge curve before high-current charging begins.

Sudden shutdown at 20–30% after fitting a replacement cell

The G73 5G's fuel gauge IC stores a discharge curve calibrated to the original cell. A new cell has different internal resistance and a slightly different voltage-to-capacity curve. Under modem or display load, voltage can sag below the shutdown threshold even when the OS still reports 20–30% remaining. One complete slow-rate discharge down to automatic cutoff — without fast charging — resets the coulomb counter and aligns the gauge to the replacement cell's actual curve.

USB fast charge not accepted on first cycle after installation

Some replacement cells present slightly higher impedance on the first cycle, and the G73 5G's charge controller defaults to standard 5V/1A input when it cannot confirm the cell is within expected impedance range. This is not a compatibility fault — it is a protection response. Charge once at standard rate to completion, then reconnect with your fast charger. The controller will renegotiate the USB-PD handshake and step up current delivery once the cell has been conditioned.

Compatible Models

Moto G73 5G XT2237

Replaces Part Numbers

PV50 SB18D61156

Technical Specifications

Voltage3.89V
Amp Hours4850mAh
Capacity4850mAh
Rate18.87Wh
Net Weight62g /2.19 oz
Gross Weight112g /3.95 oz
Approximate Weight112g /3.95 oz
Dimension 86.60 x 64.00 x 4.60mm

Product Highlights

  • Brand: Motorola
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Moto G73 5G shuts off at around 25% after I put in the new battery — is the cell faulty?

The cell is almost certainly fine. The fuel gauge IC on the G73 5G is still reading the discharge curve of your old, degraded cell, so it miscalculates the voltage cliff on the new one. Under modem or screen load, voltage sags below the cutoff threshold before the percentage hits zero. Run one full slow-rate discharge to automatic shutdown, then charge to 100% without fast charging — this recalibrates the coulomb counter to the new cell and the shutdowns stop.

The battery percentage is jumping around erratically after the swap — it skipped from 60% straight to 40%.

This is the fuel gauge IC recalibrating. It learned the old cell's internal resistance over months of use, and the new cell's impedance profile is different, so the percentage readings are unreliable until the IC re-maps the curve. Complete two full discharge-charge cycles at standard rate — no fast charging — and the gauge will stabilise. If erratic readings persist past three cycles, check that the connector is fully seated, as a partial connection introduces resistance the IC reads as a degraded cell.

The phone won't turn on at all after the replacement battery sat in a drawer for a few months before installation.

A Li-Polymer cell stored uncharged will self-discharge over time, and if it drops below approximately 2.5V, the BMS enters lockout mode to prevent damage. The G73 5G will not boot from a locked-out cell. Connect the phone to a charger and leave it for 20–30 minutes without attempting to power it on — the charge IC will trickle current into the cell until voltage recovers above the BMS re-initialisation threshold. Once the charging indicator appears on screen, the BMS has cleared lockout and normal charging will resume.

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