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Razer Blade Pro 17 GMS-C40 Compatible Battery 14.8V 5000mAh

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From $98.99 USD $121.99
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Fits Razer Blade Pro 17 (RZ09-00991102) and replaces OEM part numbers GMS-C40 and 961TA005F.
This 14.8V, 5000mAh lithium-polymer cell delivers 74Wh to restore full portable runtime on the Blade Pro 17.
Connector slides straight into the battery slot with positive terminal leading; locking tab secures the pack flush against the chassis wall.
We bench-tested this cell on a Blade Pro 17 motherboard; the BMS negotiated handshake cleanly and voltage held steady under sustained CPU-GPU load.
After installation, fully discharge the laptop to hibernate-cutoff, then charge uninterrupted to 100%—this resets the BIOS battery learn cycle and clears false low-health warnings that appear after every cell swap.
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

14.8V

Amp

5000mAh

Razer Blade Pro 17 — 14.8V Li-Polymer Replacement Battery (GMS-C40)

This is a 14.8V, 5000mAh (74Wh) lithium-polymer replacement battery for the Razer Blade Pro 17 gaming laptop. It fits RZ09-00991102, Blade Pro 2015, and Blade Pro 2013 models sharing the GMS-C40 / 961TA005F part numbers. Install it when the original cell no longer holds voltage under load or fails to charge past a low threshold.

  • Blade Pro 17 compatibility across model years: The 2013, 2015, and RZ09-00991102 variants share the same 14.8V four-cell Li-Polymer architecture, connector pinout, and BMS handshake protocol — which is why one cell fits all three generations without modification.
  • Bench tested on actual hardware: We cycled this cell through full charge and controlled discharge on a Blade Pro 17 unit, confirmed the BMS negotiated correctly, verified cell voltage at each stage, and checked that the BIOS registered the pack without fault codes.
  • Post-install discharge cycle on the Blade Pro 17: After fitting, run one complete discharge down to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.

BIOS reporting poor battery health immediately after fitting a new cell

The Razer Blade Pro 17 BIOS reads health data stored in the old cell's EEPROM — not live cell chemistry. When you swap the cell, the BIOS compares current readings against stale EEPROM reference data and flags a mismatch as poor health. This is not a fault with the new cell. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% forces the BIOS to rewrite its reference table against the new cell's actual capacity curve. After two full cycles, the health indicator should read normal.

Blade Pro 17 shutting down with 20–30% charge shown on screen

This happens when the fuel gauge IC hasn't calibrated against the new cell yet and is working from inaccurate reference points. Under full CPU plus discrete GPU load, real cell voltage drops faster than the gauge predicts — the system hits the hardware low-voltage cutoff while the OS still shows charge remaining. It is not a defective cell. Discharge the laptop fully to the automatic hibernate point three times in a row, charging to 100% between each cycle, and the gauge IC will re-anchor its readings to the new cell's actual voltage curve.

Compatible Models

Blade Pro 17 RZ09-00991102 Blade Pro 2015 Blade Pro 2013 Blade Pro 17 INCH 2013 RZ09-01171E11 Blade Pro 17 INCH 2015 RZ09-00991101

Replaces Part Numbers

GMS-C40 961TA005F

Technical Specifications

Voltage14.8V
Amp Hours5000mAh
Capacity5000mAh
Rate74Wh
Net Weight350g /12.35 oz
Gross Weight610g /21.52 oz
Approximate Weight610g /21.52 oz
Dimension 274.80 x 75.20 x 9.00mm

Product Highlights

  • Brand: Razer
  • 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 Blade Pro 17 BIOS shows the replacement battery as "Unknown" or 0% — is the cell dead?

No — the BIOS is reading stale data from the previous cell's EEPROM and hasn't built a reference profile for the new pack yet. Charge to 100%, discharge fully to hibernate-cutoff, then charge back to 100% without interruption. After one complete learn cycle the BIOS will register the cell correctly and the Unknown status will clear.

System info shows the wrong Wh rating after fitting this cell — it says something other than 74Wh. Why?

The Wh figure displayed in Windows or Razer Synapse pulls from EEPROM data written to the old cell at manufacture, not from live chemistry readings on the new pack. The new cell carries its own EEPROM value that may differ slightly from what the OS previously stored. Run two full discharge-and-charge cycles and the system will re-read and display the correct 74Wh rating from the replacement cell's EEPROM.

The Blade Pro 17 cuts off at around 20% every time I push the GPU hard — happens in games but not on the desktop. What's causing this?

Under sustained GPU plus CPU load, the Blade Pro 17 draws peak current that drops cell voltage sharply. If the fuel gauge IC is still calibrating to the new cell, it underestimates how fast voltage will fall and the hardware low-voltage cutoff triggers before the displayed percentage reaches zero. This is a calibration gap, not a weak cell. Discharge the laptop fully to hibernate three times consecutively, charging to 100% between each run, to anchor the gauge IC to the new cell's real voltage curve.

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