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Gateway NE511 15.2V Replacement Battery 3000mAh Li-Polymer

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From $73.99 USD $91.99
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Fits Gateway NE511 and NE512 notebooks — replaces the original 15.2V Li-Polymer pack.
15.2V and 3000mAh capacity delivers 45.6Wh total energy to sustain full CPU and display load cycles.
Connector type and orientation match Gateway's factory slot — physical fit confirmed on NE511 and NE512 hardware.
Bench testing showed the BMS accepted charge current without fault codes and held voltage stable under sustained load draw.
After installation, run one full discharge to hibernation cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings that appear after cell swaps.
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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.

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🔹 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

15.2V

Amp

3000mAh

Gateway NE511 / NE512 — 15.2V Li-Polymer Replacement Battery

This is a 15.2V, 3000mAh (45.6Wh) Li-Polymer battery for the Gateway NE511 and NE512 notebook computers. It replaces a degraded or dead original cell and restores full mobile operation. Voltage and connector match the original spec — no modifications needed on either model.

  • NE511 and NE512 compatibility: Both models use the same 15.2V battery rail, identical connector pinout, and share the same BMS communication protocol. One cell covers both — swapping between models carries no risk of mismatch on voltage or handshake.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on NE511 hardware. The BMS handshake completed correctly, charge acceptance tracked from 0% through 100% without interruption, and the protection circuit responded normally to end-of-charge termination.
  • First-cycle calibration on the NE511: After installation, run one full discharge until the laptop hibernates, then charge uninterrupted to 100% without use. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.

Why the NE511 BIOS flags a new battery as poor health immediately after swap

The NE511 BIOS stores battery health data in EEPROM tied to the original cell's charge history. When a new cell is installed, that stored data no longer matches the actual cell — the BIOS reads the mismatch as degradation. Running one full discharge-to-hibernate cycle followed by a complete uninterrupted charge forces the BIOS to rewrite its battery learn data against the new cell. After one or two full cycles, the health indicator returns to normal.

NE511 shutting down at 20–30% charge shown on the gauge

This is a voltage cliff issue, not a gauge fault. Under combined CPU and display load, the cell voltage drops faster than the fuel gauge IC can recalibrate — the laptop hits the low-voltage protection threshold while the percentage still reads high. It is most common in the first few cycles after a swap, before the fuel gauge IC has mapped the new cell's discharge curve. Run two or three full discharge-to-hibernate cycles to let the IC recalibrate. After calibration, the shutdown threshold and displayed percentage should align at or below 5%.

Compatible Models

NE511 NE512

Technical Specifications

Voltage15.2V
Amp Hours3000mAh
Capacity3000mAh
Rate45.6Wh
Net Weight240g /8.47 oz
Gross Weight500g /17.64 oz
Approximate Weight500g /17.64 oz
Dimension 260.66 x 88.26 x 5.32mm

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 NE511 shows the replacement battery as 0% and won't charge — is the cell dead out of the box?

It's almost always an EEPROM mismatch, not a dead cell. The BIOS is reading charge history from the old cell's data and applying it to the new one. Plug in the AC adapter and leave it connected for at least 30 minutes without pressing the power button — the BMS needs time to initialise before the BIOS will register the cell. If the gauge still reads 0% after that, reseat the battery and confirm the connector is fully clicked in.

The fuel gauge on my NE511 jumps around wildly — shows 60%, then drops to 15% a few minutes later.

The fuel gauge IC calibrates its discharge curve against actual cell behaviour over multiple cycles. A brand-new cell has no discharge history recorded, so the IC is interpolating against the old cell's data. Run two to three complete discharge cycles — drain to hibernate, then charge uninterrupted to 100% each time. By the third cycle the gauge should track within 5% of actual remaining capacity.

Windows shows the NE511 battery Wh rating as lower than the 45.6Wh spec — is something wrong with the cell?

The Wh figure Windows displays is pulled from EEPROM data embedded in the battery's BMS chip, not measured in real time. That stored value reflects the rated capacity of the original cell and does not update automatically to match the replacement. The actual usable energy in the new 45.6Wh cell is correct — the discrepancy is a display artefact. After two full charge-discharge cycles, some BIOS versions will recalculate and update the displayed Wh figure to match the new cell.

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