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Gateway GWTN156-7BK Compatible Battery 11.4V 4500mAh

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Fits Gateway GWTN156-7BK and replaces OEM part number 5376275P.
11.4V and 4500mAh (51.3Wh) restores full charge capacity to this 15.6-inch notebook.
Connector seats into the internal battery slot with a locking tab that secures flush against the motherboard.
We bench-tested this cell in the GWTN141 platform — BMS accepted the new pack on first insertion and charged to 100% without cutoff or thermal throttle.
After installation, run one full discharge to hibernation-cutoff then charge uninterrupted to 100% to reset the BIOS battery learn cycle and clear false health warnings.
Extended delivery time

Available by SPECIAL ORDER. Delivery for this product typically takes 2 weeks.

Extra Discount: As a thank you for your patience, enjoy an extra 5% off 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

11.4V

Amp

4500mAh

Gateway GWTN156-7BK / GWTN141 Series — 11.4V Li-Polymer Replacement Battery (5376275P)

This 11.4V, 4500mAh (51.3Wh) lithium-polymer battery replaces part number 5376275P in the Gateway GWTN156-7BK and GWTN141 series laptops. It fits multiple GWTN141 variants including the GWTN141-2BL, GWTN141-4BK, and GWTN141-4BL. If your original cell has lost capacity or stopped charging, this is the direct cell swap.

  • GWTN156 and GWTN141 platform fitment: These models share the same 11.4V three-cell battery rail, connector pinout, and BMS handshake protocol — that is why one part number covers the full range. Cross-OEM references NV-509067-3S, UTL-509068-3S, and NV-549067-3S all map to the same physical cell.
  • Bench tested on actual hardware: We ran this cell through charge, load, and BMS communication checks. The protection circuit responded correctly to over-discharge cutoff and charge termination at full capacity. SMBus data handshake to the host controller completed without errors.
  • Post-swap calibration on Gateway BIOS: After fitting this cell, run one full discharge to hibernate cutoff — not a hard shutdown — then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap on Gateway firmware.

BIOS reporting battery health as poor immediately after replacement

Gateway BIOS reads health data from EEPROM stored on the battery's BMS chip. When you swap the cell, the EEPROM contains factory-default charge cycle counts and rated capacity values that the BIOS has never seen before. The firmware flags this mismatch as degraded health rather than a fresh cell. Running one full discharge-to-hibernate followed by a complete uninterrupted charge resets the learn cycle and synchronises the BIOS health display with the actual cell state.

Laptop shuts down at 20–30% charge shown on screen

This happens when the fuel gauge IC has not yet calibrated against the new cell's voltage curve. The IC still uses the old cell's discharge profile, so it misreads the remaining capacity and triggers a low-voltage shutdown before the display percentage reaches zero. The fix is two to three full discharge-and-charge cycles without interruption. After calibration, the cutoff should align with the cell's actual low-voltage threshold of approximately 9.0V under load.

Compatible Models

GWTN156-7BK GWTN141-2BL GWTN141-4bk GWTN141-4BL GWTN141-10BK GWTN141-4 GWTN156-5BL GWTN141-10GR GWNR71517-BK

Replaces Part Numbers

5376275P GWTN141-2 GWTN141-4 NV-509067-3S UTL-509068-3S U559068PV-3S1P NV-549067-3S

Technical Specifications

Voltage11.4V
Amp Hours4500mAh
Capacity4500mAh
Rate51.3Wh
Net Weight226g /7.97 oz
Gross Weight486g /17.14 oz
Approximate Weight486g /17.14 oz
Dimension 275.70 x 98.00 x 5.50mm

Product Highlights

  • Brand: Gateway
  • 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 Gateway laptop shows 0% battery and won't recognise the new cell at all — what's happening?

The BIOS is reading EEPROM data from the new cell's BMS chip and flagging it as unknown because the charge history doesn't match what it expects. This is a firmware mismatch, not a faulty battery. Boot the laptop on AC power, let Windows fully load, then disconnect AC and let the battery discharge completely to hibernate. Recharge uninterrupted to 100% — the BIOS learn cycle should register the cell correctly after that first full pass.

System info shows the wrong Wh rating — it says 45Wh but the battery is rated 51.3Wh. Is the cell underperforming?

The Wh figure shown in Device Manager or battery settings is pulled from the EEPROM on the BMS chip, which stores the rated value programmed at the factory — not a live measurement of what the cell is actually delivering. A mismatch between the EEPROM-stored value and the label spec is common across third-party cells and does not affect charge behaviour or capacity output. Confirm the actual capacity by running a full discharge cycle and monitoring the drain; the EEPROM figure will not update regardless of what the cell physically holds.

The fuel gauge is jumping around — showing 60%, then 80%, then back to 55% within minutes of unplugging. Why?

The fuel gauge IC needs several full charge-discharge cycles to map the new cell's voltage curve before it can report accurately. Until it has that data, it interpolates from the old cell's profile, which produces erratic percentage readings. Run two to three complete cycles — full discharge to hibernate cutoff, then full uninterrupted charge to 100% each time. After the third cycle, the readings should stabilise and track the actual cell voltage accurately.

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