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ZTE Grand X 3 Li3831T43P4H826247 Compatible Battery 3.8V 2500mAh

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From $24.99 USD $30.99
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Fits ZTE Grand X 3, Grand X 3 LTE, Z959, and Zmax Champ; replaces Li3831T43P4H826247.
This 3.8V 2500mAh Li-Polymer cell delivers the same watt-hour output as the original, restoring full runtime to your device.
Connector sits flush into the battery slot with no mechanical play; polarity alignment is keyed to prevent reversed installation.
We bench-cycled this cell across three full discharge curves; the BMS accepted charge at standard 1A input with no fault codes or early 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's discharge curve.
Delivery time

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

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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

2500mAh

ZTE Grand X 3 / Z959 — 3.8V Li-Polymer Replacement Battery (Li3831T43P4H826247)

This is a 3.8V, 2500mAh Li-Polymer cell that replaces the original battery in the ZTE Grand X 3, Grand X 3 LTE, Z959, and Zmax Champ. It fits the same footprint as the OEM unit at 81.30 × 61.90 × 4.70mm. If your Grand X 3 is shutting down unexpectedly, losing charge quickly, or won't hold any charge at all, this cell addresses the failed original.

  • Grand X 3 / Z959 platform fit: These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell covers the full variant list including the LTE and Zmax Champ without modification.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the Grand X 3 platform and confirmed the BMS accepts the charge handshake correctly, with no cutoff trips during a standard draw cycle.
  • Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's discharge curve before high-current charging is applied to an uncalibrated cell.

Sudden shutdown at 20–30% on the Grand X 3 after a cell swap

This happens when the fuel gauge IC is still running its lookup table against the old cell's discharge curve. The new cell hits a voltage cliff under modem or display load before the OS registers low battery. The phone cuts out because actual cell voltage drops below the protection threshold while the OS still shows 20–30% remaining. Running one full discharge cycle without fast charging forces the coulomb counter to rebuild its reference table against the new cell.

Device not powering on after the replacement cell sat in storage

Li-Polymer cells self-discharge in storage, and if voltage drops below approximately 2.5V, the BMS trips a lockout to prevent damage to the cell. The phone will show nothing on screen — no charge indicator, no boot. Connect the phone to a wall charger rated at least 5V/1A and leave it for 20–30 minutes before attempting to power on. The charge IC will trickle current into the cell until voltage climbs above the BMS re-enable threshold, after which normal charging resumes.

Compatible Models

GRAND X 3 Grand X 3 LTE Z959 Zmax Champ Z917VL 3neo MF287 Max Champ

Replaces Part Numbers

Li3831T43P4H826247

Technical Specifications

Voltage3.8V
Amp Hours2500mAh
Capacity2500mAh
Rate9.5Wh
Net Weight40g /1.41 oz
Gross Weight75g /2.65 oz
Approximate Weight75g /2.65 oz
Dimension 81.30 x 61.90 x 4.70mm

Product Highlights

  • Brand: ZTE
  • 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 ZTE Grand X 3 keeps jumping between battery percentages after I put in the new cell — is something wrong with it?

Nothing is wrong with the cell. The fuel gauge IC on the Grand X 3 uses a coulomb counter calibrated to the old cell's discharge curve, and after a swap it doesn't yet have reference data for the new cell. Percentage readings will be erratic until the IC rebuilds that map. Run one full discharge from 100% down to automatic shutoff, then charge uninterrupted to 100% with fast charging disabled — after that cycle, the readings stabilise.

Fast charging stopped working on my Grand X 3 the first time I plugged in after replacing the battery — what happened?

On the first charge cycle after a cell swap, the charge IC may not negotiate the fast-charge protocol until it has completed one baseline charge pass with the new cell. This is normal behaviour — the USB-PD or proprietary charge handshake requires a completed cycle before the controller unlocks higher current delivery. Charge the phone fully on a standard 5V/1A adapter first, then reconnect your fast charger on the second cycle.

The back of my Grand X 3 feels warm near the battery while it's charging after the replacement — should I be concerned?

A new Li-Polymer cell has higher internal impedance than a broken-in cell, which means the charge IC works slightly harder during early cycles and generates more heat. This warmth typically reduces after three to five charge cycles as cell impedance drops. If the phone feels hot to the touch rather than warm, or if warmth persists past five cycles, check that the replacement cell dimensions are seated flush and the connector is fully engaged — a partial connection increases resistance at the terminal and amplifies heat.

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