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Samsung Galaxy XCover7 Pro GH43-05270A Replacement Battery 3.88V 3900mAh

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From $50.99 USD $62.99
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Fits Samsung Galaxy XCover7 Pro models SM-G766B and SM-G766B/DS; replaces OEM part GH43-05270A and EB-BG766GBY.
This 3.88V, 3900mAh cell restores full runtime on the XCover7 Pro after the original degrades from work-cycle discharge.
Connector seats flush into the battery slot with no adapter; locking tab engages the frame-mounted retention clip.
We bench tested the cell on a stock firmware XCover7 Pro; BMS accepted charge at standard rates with no fault flags.
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.
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.

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⚠️ 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

3.88V

Amp

3900mAh

Samsung Galaxy XCover7 Pro — 3.88V Li-ion Replacement Battery (GH43-05270A)

This 3.88V, 3900mAh Li-ion battery replaces the original cell in the Samsung Galaxy XCover7 Pro (SM-G766B, SM-G766B/DS, SM-G766BU1). It matches OEM part numbers GH43-05270A and EB-BG766GBY. Rated at 15.13Wh, it restores full operating capacity to this rugged smartphone platform.

  • XCover7 Pro platform fit: The SM-G766B variants share a fixed connector pinout and BMS handshake tied to Samsung's fuel gauge IC. All listed models use the same voltage rail and charge IC configuration, so one cell covers the full variant set without adapter changes.
  • Bench tested on actual hardware: We cycled this battery through a full discharge-charge sequence on SM-G766B hardware. The BMS negotiated charge termination correctly, and the fuel gauge IC logged cell capacity without triggering fault codes at either charge entry or cutoff.
  • First-cycle fast charge caution: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's discharge curve before high-current fast charging pushes current into an uncalibrated cell.

Sudden shutdown at 20–30% on the XCover7 Pro after a cell swap

This is a voltage cliff issue, not a defective cell. The fuel gauge IC was calibrated to the old cell's discharge curve, so it misreads remaining capacity on the new cell. When the modem or display pulls a heavy load burst, the cell voltage drops faster than the gauge expects and the BMS triggers a protective shutdown before the reported percentage reaches zero. One full discharge-charge cycle — draining to automatic shutdown, then charging uninterrupted to 100% — resets the coulomb counter against the new cell's actual curve. After that cycle, the shutdown-at-percentage behaviour typically stops.

USB-PD fast charge not accepted on the first charge after installation

Some SM-G766B units refuse fast charge negotiation on the very first cycle with a new cell. The charge IC defaults to a conservative trickle rate when it cannot confirm the cell's internal resistance profile, which it learns during the first full cycle. Plug into a USB-PD charger after that initial full cycle completes and fast charge should negotiate normally. If fast charge still does not activate, check that battery saver mode is off — the XCover7 Pro locks charge rate to standard when battery saver is enabled.

Compatible Models

Galaxy XCover7 Pro SM-G766B SM-G766B/DS SM-G766BU1 Galaxy Xcover 7 Pro

Replaces Part Numbers

GH43-05270A EB-BG766GBY

Technical Specifications

Voltage3.88V
Amp Hours3900mAh
Capacity3900mAh
Rate15.13Wh
Net Weight68g /2.40 oz
Gross Weight93g /3.28 oz
Approximate Weight93g /3.28 oz
Dimension 73.00 x 62.35 x 6.20mm

Product Highlights

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

Frequently Asked Questions

Why does my XCover7 Pro show the wrong battery percentage after fitting a new cell?

The fuel gauge IC stores a learned discharge curve from the old cell, and it keeps using that curve until it recalibrates. The mismatch causes reported percentage to drift — sometimes by 10–15 points. Run one full uninterrupted cycle: drain the phone to automatic shutdown, then charge straight to 100% without interruption. After that single cycle, the coulomb counter resets to the new cell's actual curve and the percentage readings stabilise.

The phone won't turn on at all after the replacement battery sat in a drawer for a few months — what's wrong?

A cell that discharges below roughly 2.5V during storage trips the BMS into a lockout state to prevent damage. The phone will not respond to the power button until the cell voltage recovers above the BMS re-entry threshold. Connect a known-good Samsung charger and leave it plugged in for 20–30 minutes without expecting any screen activity — the charge IC runs a pre-charge trickle below 3.0V. Once the cell climbs above 3.0V the BMS unlocks and the phone will power on normally.

The XCover7 Pro gets noticeably warm near the battery during the first few charges with the new cell — is that a fault?

A new high-impedance cell generates more heat during charging than a broken-in cell does, because the charge IC is pushing current into a cell with higher internal resistance before the first few cycles reduce it. This is normal behaviour on the first two to three charge cycles and should reduce noticeably by cycle three. If the back of the phone stays hot beyond cycle five or the charger shows fault behaviour, check that the battery connector is fully seated — a partially engaged connector increases contact resistance and keeps heat elevated.

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