
BTY-M6M 99.9Wh Maximum Capacity Battery for MSI GS66 Stealth, GE66/76 Raider & WS66
Unleash maximum unplugged performance. This BTY-M6M replacement battery delivers the highest capacity available—99.9Wh—engineered for MSI's most powerful gaming and workstation laptops. Experience extended runtime for marathon gaming sessions, intensive rendering, and critical work without being tethered to an outlet, all while remaining compliant with FAA air travel regulations.

Precision Compatibility for Flagship MSI Models
This high-capacity battery is a direct internal replacement for these performance machines:
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MSI GS66 Stealth: 10SE, 10SF, 11UE, 11UH
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MSI GE66 Raider: 10UG, 11UG
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MSI GE76 Raider / Dragon Tiamat: 11UE, 11UG, 11UH
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MSI WS66 / Creator Series: WS66 10TM, 11UMT, 11UKT
Key Specifications
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Battery Model: BTY-M6M
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Capacity: 99.9 Wh (Maximum FAA-Compliant Capacity)
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Voltage: 15.4 V (High-Performance Specification)
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Type: Li-Polymer Battery (Internal)
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Condition: Brand New, High-Quality Replacement
Why the 99.9Wh BTY-M6M is a Game-Changer
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Absolute Maximum Runtime: The 99.9Wh capacity provides the longest possible battery life for your laptop, significantly outperforming standard capacity batteries.
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FAA Air Travel Compliant: Designed to be the largest battery legally permitted in carry-on luggage without special approval.
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Power for High-End Components: Delivers stable voltage to fuel Intel H-series CPUs and high-wattage NVIDIA RTX 30-series graphics.
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Seamless Integration: Precision-engineered to fit the specific internal chassis layout of the GS66, GE66, and GE76 series.
Professional Installation is Mandatory
These MSI laptops feature a complex, inverted motherboard design where the battery is buried beneath other components.
Attempting self-installation carries an extremely high risk of causing permanent damage. This replacement must be performed by a qualified technician.
Frequently Asked Questions (FAQ)
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Q: Why is the capacity 99.9Wh and not 100Wh?
A: 99.9Wh is the standardized maximum capacity for FAA compliance. It is the largest battery you can use without needing airline approval. -
Q: Is this compatible with the GE76 Raider 11UH?
A: Yes, the BTY-M6M is the correct high-capacity battery for the GE76 Raider 11UH (Dragon Tiamat) model. -
Q: Will this work with older GE75 or GS65 models?
A: No. The BTY-M6M is specifically designed for the GS66/GE66/GE76/WS66 chassis generation and is not compatible with older models.
Ready for Ultimate Mobility and Power?
Order your BTY-M6M battery today and break free from power constraints with the maximum capacity available.

Replacement Part Number:
- BTY-M6M
- 4ICP8/35/142
Compatible Models (use "Ctrl+F" to find your model quickly")
- 1. For MSI Creator 15 A10SD Series
15 A10SDT-067FR,15 A10SDT-066PT,15 A10SDT(MS-16V2),15 A10SDT-059BE,15 A10SDT-230IT,15 A10SDT-091PL,15 A10SDT-065ES,15 A10SD(MS-16V2),15 A10SDT-058NL,15 A10SDT-263CZ,15 A10SDT-213FR
- 2. For MSI Creator 15 A10SF Series
15 A10SFT-069FR,15 A10SFS-023FR,15 A10SFT-228IT,15 A10SFS-019PT,15 A10SFT(MS-16V2),15 A10SFS(MS-16V2),15 A10SFT- 046BE,15 A10SFS-021FR,15 A10SFT-093DE,15 A10SFS-017ES,15 A10SFS-010DE,15 A10SFT-045NL,15 A10SFS-027PL.
- For MSI GS66 Stealth 10SFS Series
GS66 Stealth 10SFS-056DE, 10SFS-064IT
- For MSI GS66 Stealth 10SGS Series
10SGS-016FR,10SGS-481FR,10SGS-241IT,10SGS-024PL,10SGS-263FR,10SGS-054DE,10SGS(MS-16V1),10SGS-424FR,10SGS- 085BE,10SGS-009FR,10SGS-492FR,10SGS-217PT,10SGS-014FR,10SGS-264SP,10SGS-084NL,10SGS-423FR,10SGS-205DE,10SGS- 493FR,10SGS-010FR,10SGS-219ES.
- For MSI GS66 Stealth 10SE-045 Series
- For MSI GS66 Stealth 10UG SeriesF
- or MSI GE66 Raider 10SFS Series
10SFS(MS-1541),10SFS-007CN,10SFS-072,10SF-412,10SF-077,10SF-228,10SGS(MS-1541),GE66 10SFS-072,10SD(MS-1541),10SGS- 074,10SF-447FR.
- For MSI GE76 Raider 10UH-226TR Series.
- For MSI GE76 Raider 11UH Series: 11UG-069AU,11UH-437XTR.
- For MSI WS66 10TMT-207US Series
- For MSI Creator 15 A10SE Series
15 A10SET-083PT,15 A10SE-051BE,15 A10SGS-049FR,15 A10SET-082ES,15 A10SET(MS-16V2),15 A10SET-047NL,15 A10SGS- 037FR,15 A10SET-243FR,15 A10SE-265ES,15 A10SGS-036FR,15 A10SET-212FR,15 A10SE-042NL,15 A10SGS-064PT,15 A10SET- 084IT,15 A10SE-070FR,15 A10SGS-062ES,15 A10SET-068FR,15 A10SGS(MS-16V2),15 A10SDT-058NL,15 A10SET-262CZ,15 A10SE(MS- 16V2),15 A10SEV(MS-16V2),15 A10SGS-026PL,15 A10SET-211FR,15 A10SGS-009DE,15 A10SE-264ES.
- For MSI WS66 10TMT-207US Series.
| Battery Capacity | 99.99Wh/ 6578mAh |
| Voltage | 15.2V |
| Model No | BTY-M6M |
| Warranty | 12 Months |
🔋 Lithium-Ion Battery Conditioning
For optimal electrochemical performance, new lithium-ion batteries should undergo 2–3 complete charge and discharge cycles before reaching full capacity.
This stabilization phase allows the internal cell chemistry to achieve balanced ion distribution, ensuring maximum runtime, stable voltage output, and extended cycle life.
After this initial conditioning period, no further full discharge cycles are required.
🛡 Premium Warranty Protection
- 12-Month Limited Manufacturer Warranty
- Up to 30-Day Return Guarantee (Policy Based)
- Replacement for defective or misrepresented items
- Dedicated customer service response within 24 hours
🚚 Professional Shipping Standards
- Orders placed Monday–Friday are processed within 1–2 business days. Orders placed on weekends are processed the following Monday.
- Tracking information appears in your order within 1–2 business days after dispatch.
- Transit time varies by region and logistics carrier
- Please verify your shipping address before order confirmation
- Address changes are not possible once shipment is dispatched
📌 Product-Specific Notice
📩 Customer Care Commitment
We are committed to delivering professional-grade battery solutions and responsive after-sales service. If you experience any issues, please contact our support team before leaving feedback.
✓ Safety & Quality Assurance
- Built-in protection against overcharging, overheating, and short circuits.
- Shipped in compliance with IATA regulations for lithium batteries.
- Compatible with OEM chargers. No firmware modification required.
Questions about compatibility? Contact us with your device model number before ordering.
Cao Chuanping
Power Systems Consultant · 8+ years in replacement battery sourcing & evaluation · View profile →
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