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MSI CR650 Notebook Replacement Battery 11.1V 4400mAh BTY-S14

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From $69.99 USD $86.99
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Fits MSI CR650, CX650, FR400, FX400 and replaces BTY-S14, BTY-S15, 40029150, 40029231, 40029683 OEM cells.
Delivers 11.1V at 4400mAh — this Li-ion pack runs the CR650's 15.6-inch display and dual-core CPU without voltage sag under load.
Connector aligns with the original slot; locking tab seats flush against the battery bay wall on insertion.
We bench-tested this cell in the CR650 bay — BMS initialized cleanly on first charge, fuel gauge IC registered capacity correctly by cycle three.
After installation, discharge fully to hibernate cutoff, then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears false health warnings that appear after cell swaps.
Delivery time

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

Discount: As a thank you for your patience, enjoy 5% off on your order
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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

11.1V

Amp

4400mAh

MSI CR650 / CX650 / FR400 Series — 11.1V Li-ion Replacement Battery (BTY-S14)

This is an 11.1V, 4400mAh Li-ion battery for the MSI CR650, CX650, FR400, FX400, and related notebooks. It replaces OEM part numbers BTY-S14 and BTY-S15, among others listed. Capacity is 48.84Wh — matching the original cell specification.

  • CR650 / CX650 / FR400 / FX400 platform fit: These models share the same 11.1V three-cell battery rail, connector pinout, and BMS handshake protocol. One cell covers the entire group — no adapter or modification needed.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an MSI CR650 unit. The BMS accepted the cell without fault codes, charge negotiation completed normally, and the protection circuit tripped correctly at low-voltage cutoff.
  • Post-install calibration on MSI notebooks: After fitting this battery, run the laptop down to hibernate-cutoff under normal use, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell's actual capacity and clears the false health warning that appears after every cell swap.

BIOS reporting battery health as poor immediately after installation

The MSI BIOS reads health data from the battery's EEPROM, which stores charge cycle count and rated capacity from the previous cell. A brand-new cell arrives with EEPROM values the BIOS doesn't recognise as matching its stored baseline, so it flags health as poor or unknown. This is a firmware calibration issue, not a fault with the replacement cell. One full discharge-to-hibernate followed by an uninterrupted charge to 100% resets the learn cycle. After two to three cycles the BIOS health reading normalises.

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

This is a voltage cliff issue. Under combined CPU and display load, the cell voltage drops faster than the fuel gauge IC can track, and the system hits the low-voltage protection threshold before the displayed percentage reaches zero. It typically means the fuel gauge IC has not yet calibrated its discharge curve against the new cell's actual chemistry. Run two full discharge cycles — down to automatic hibernate, not a forced shutdown — then charge to 100% each time. The gauge recalibrates its curve and the cutoff point shifts back toward 5–10% where it belongs.

Compatible Models

CR650 CX650 FR400 FX400 FX420 FR600 FX600 FX603 FX610 FR620 FX620 FX620DX FR700 FX700 GE620 GE620DX MS-1482 MS-16G1 MS-16G4 MS-16G7

Replaces Part Numbers

BTY-S14 BTY-S15 40029150 40029231 40029683 E2MS110K2002 E2MS110W2002 E2MS115K2002

Technical Specifications

Voltage11.1V
Amp Hours4400mAh
Capacity4400mAh
Rate48.84Wh
Net Weight285.5g /10.07 oz
Gross Weight435.5g /15.36 oz
Approximate Weight435.5g /15.36 oz
Dimension 204.00 x 51.00 x 21.50mm

Product Highlights

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

Frequently Asked Questions

The battery icon in Windows shows 0% and "plugged in, not charging" right after I put the new cell in — is it dead?

It isn't dead. The Windows fuel gauge IC loses its calibration reference when the old cell is removed, and the first reading after install is often 0% or "unknown" until the system negotiates with the new cell's EEPROM. Plug in the charger, leave the laptop powered on, and wait ten minutes — the percentage will begin climbing as the BMS handshake completes. If it stays at 0% after 15 minutes, remove the AC adapter, hold the power button for 30 seconds to clear the EC, then reconnect and charge from there.

Windows is reporting this battery as 35Wh but the spec says 48.84Wh — something wrong with the cell?

Nothing is wrong with the cell. Windows pulls the Wh figure from the battery's EEPROM, which stores the rated design capacity written at manufacture. If the EEPROM value on this replacement cell differs from what the old cell reported, Windows displays the EEPROM number rather than the measured chemistry value. Run two full discharge-to-hibernate and recharge cycles. The fuel gauge IC recalculates full charge capacity against the actual cell output, and the reported Wh figure in Windows Device Manager updates to reflect the real number — in this case, closer to 48Wh.

Charge stops at exactly 80% and won't go higher no matter how long it stays plugged in — charger problem or battery?

Almost always a BIOS charge-limit setting, not the battery or charger. MSI notebooks include a battery charge limiter in BIOS — often labelled "Battery Calibration" or "Charge Control" — that caps charging at 80% to reduce cell stress during long plugged-in sessions. Enter BIOS setup (Del key at POST), navigate to the battery or power section, and set the charge limit to 100%. Save and exit. If no such setting exists, check MSI Dragon Center or MSI Center software — the charge limit toggle sits there on some CR-series firmware versions.

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