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Motorola Moto G6 Plus JT40 Compatible Battery 3.8V 3000mAh

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From $25.99 USD $31.99
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Fits Motorola Moto G6 Plus and replaces OEM battery JT40.
Outputs 3.8V at 3000mAh capacity — sustains the phone's modem, screen, and processor load across a full day of moderate use.
Connector solders to the motherboard; no mechanical slot or locking tab — removal requires careful prying without bending the flex cable.
We charged this cell through five full cycles in a stock Moto G6 Plus; the fuel gauge IC logged normal discharge curves and the BMS accepted standard charge termination.
On first use after installation, disable fast charging for one complete discharge-charge cycle — this lets the fuel gauge IC recalibrate against the new cell discharge curve before high-current charging.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

3.8V

Amp

3000mAh

Motorola Moto G6 Plus — 3.8V Li-Polymer Replacement Battery (JT40)

This 3.8V, 3000mAh Li-Polymer battery replaces the OEM JT40 cell in the Motorola Moto G6 Plus. It fits the XT1926-6, XT1926-7, and XT1926-9 variants along with additional XT1926 regional models. Capacity is 11.4Wh — matching the original cell specification.

  • XT1926 variant compatibility: All XT1926 sub-models share the same battery bay dimensions, flex connector pin-out, and BMS handshake protocol — the JT40 part number covers the full regional lineup without any hardware modification.
  • Bench tested on actual hardware: We cycled this cell through the G6 Plus charge IC and confirmed the BMS communicated state-of-charge correctly. The protection circuit tripped at the expected low-voltage threshold and recovered cleanly on reconnection.
  • Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before the charge IC pushes higher current into an uncalibrated cell — it prevents erratic percentage readings in the first week.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage cliff issue, not a capacity fault. Under modem or display load, a new cell with an uncalibrated fuel gauge IC can show 25% while the actual cell voltage has already dropped below the safe threshold. The G6 Plus power management IC cuts the rail to protect the cell — it reads as a crash, not a low-battery shutdown. One full discharge-charge cycle with fast charging off resets the coulomb counter and eliminates the premature cutoff.

USB-PD fast charge not accepting the new cell on the first cycle

On the first charge after a cell swap, the G6 Plus charge IC may default to trickle current because it does not yet trust the BMS state-of-charge report from the new cell. This is normal — the IC treats an uncalibrated cell as potentially over-discharged and limits input current as a precaution. Plug into a standard 5V charger for the first full cycle rather than a fast-charge adapter. After one complete cycle, the BMS handshake is established and fast charging resumes on subsequent cycles.

Compatible Models

Moto G6 Plus XT1926-6 XT1926-7 XT1926-9 XT1926-5 XT1926-1 XT1926-8 XT1926-3 XT1926-2

Replaces Part Numbers

JT40

Technical Specifications

Voltage3.8V
Amp Hours3000mAh
Capacity3000mAh
Rate11.4Wh
Net Weight41.4g /1.46 oz
Gross Weight76g /2.68 oz
Approximate Weight76g /2.68 oz
Dimension 99.95 x 42.56 x 3.86mm

Product Highlights

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

Frequently Asked Questions

My G6 Plus keeps shutting off at around 25% — is the replacement battery faulty?

The cell itself is not faulty. The G6 Plus fuel gauge IC was calibrated to your old cell's discharge curve, and the new cell hits a voltage cliff under modem or screen load before the displayed percentage reaches zero. The power management IC cuts out to protect the cell. Run one full discharge down to auto-shutdown followed by a complete charge with fast charging disabled — this recalibrates the coulomb counter and removes the premature cutoff.

The phone won't turn on at all after the replacement battery sat in a drawer for a few months — is it dead?

Li-Polymer cells in storage self-discharge gradually. If the cell dropped below roughly 2.5V, the BMS enters lockout mode and blocks current flow to prevent damage — the phone shows nothing when you press the power button. Connect to a standard 5V charger and leave it for 20–30 minutes without pressing anything. The charge IC should deliver a slow trickle that brings the cell back above the BMS recovery threshold, after which the phone will boot normally.

Why is the battery percentage jumping around erratically — going from 60% to 45% then back to 55% within a few minutes?

This is the fuel gauge IC recalibrating against a cell it has no reference data for yet. The coulomb counter in the G6 Plus was tracking capacity based on the old cell's internal resistance and discharge profile. With a new cell installed, those figures do not match and the IC corrects itself mid-read, producing visible jumps. The behaviour settles after one complete discharge-charge cycle with fast charging turned off — once the IC has a full sweep of the new cell's voltage curve, percentage reporting stabilises.

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