--- product_id: 607205576 title: "BTY-M55 Battery 90Wh Replacement for MSI Pulse GL66 GL76 12UGK 12UGSZOK 12UGSZK 12UGOK Alpha 15 A3DDK A4DEK B5EX 17 B5EEK Pulse 15 B13VFK B13VGK Katana GF66 11UG Crosshair 15 17 B12UGZ Sword 15 A11UG" brand: "zthy" price: "Β£49.70" currency: GBP in_stock: true reviews_count: 1 url: https://www.desertcart.co.uk/products/607205576-bty-m55-battery-90wh-replacement-for-msi-pulse-gl66-gl76 store_origin: GB region: United Kingdom --- # 15.4V stable voltage output Rechargeable Li-Polymer tech 90Wh high-capacity power BTY-M55 Battery 90Wh Replacement for MSI Pulse GL66 GL76 12UGK 12UGSZOK 12UGSZK 12UGOK Alpha 15 A3DDK A4DEK B5EX 17 B5EEK Pulse 15 B13VFK B13VGK Katana GF66 11UG Crosshair 15 17 B12UGZ Sword 15 A11UG **Brand:** zthy **Price:** Β£49.70 **Availability:** βœ… In Stock ## Summary > πŸ”‹ Stay charged, stay ahead β€” power your MSI like a pro. ## Quick Answers - **What is this?** BTY-M55 Battery 90Wh Replacement for MSI Pulse GL66 GL76 12UGK 12UGSZOK 12UGSZK 12UGOK Alpha 15 A3DDK A4DEK B5EX 17 B5EEK Pulse 15 B13VFK B13VGK Katana GF66 11UG Crosshair 15 17 B12UGZ Sword 15 A11UG by zthy - **How much does it cost?** Β£49.70 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/607205576-bty-m55-battery-90wh-replacement-for-msi-pulse-gl66-gl76) ## Best For - zthy enthusiasts ## Why This Product - Trusted zthy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Sleek & Reliable:** Slim black design blends effortlessly with your professional gear while delivering robust power. - β€’ **Smart Battery Revival:** Optimized wake-up cycle instructions to maximize battery lifespan and performance. - β€’ **Certified Safety First:** CE & UL certified for peace of mind in every charge cycle. - β€’ **Power Through Your Day:** 90Wh capacity ensures marathon productivity without the mid-meeting panic. - β€’ **Seamless Compatibility:** Tailored for MSI Pulse, Alpha, Katana, Crosshair & Sword seriesβ€”plug and play perfection. ## Overview The BTY-M55 is a 90Wh, 15.4V Li-Polymer replacement battery designed specifically for a wide range of MSI laptops including Pulse, Alpha, Katana, Crosshair, and Sword series. It offers high capacity and certified safety standards (CE, UL), ensuring reliable, long-lasting power for demanding professional use. Rechargeable and easy to install, it comes with optimized instructions to maximize battery life and performance. ## Description Full description not available ## Features - Specifications: Battery type: Li-Polymer. Color: Black.Voltage: 15.4V. Capacity: 90Wh/5845mAh. ZTHY specializes in Laptop and camera Accessories including Laptop Batteries, Tablet batteries, Camera Batteries, Camcorder Batteries,Vacuum Batteries, and chargers - Compatible Part Number: BTY-M55 925QA055H 4ICP5/63/133 - Compatible Models: Replacement for MSI Alpha 15 A3DDK A4DEK B5EEK B5EX Series, Replacement for MSI Alpha 17 B5EEK Series, MSI Pulse 15 B13VFK B13VGK, MSI Pulse GL66 GL76 12UGK 12UGSZOK 12UGSZK 12UGOK, MSI Crosshair 15 17 B12UGZ B12UGZO B12UGSZ B12UGSZO,MSI Crosshair 15 R6E B12UGZ, MSI Katana GF66 11UG Series Series - Security: All ZTHY products are Certified by CE, and UL for safety. Strict guidelines for compatibility, and standards compliance for environmental safety - Note: If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 10-20% (not 0%), then charge and cycle 3-4 times to wake up the new battery ## Technical Specifications | Specification | Value | |---------------|-------| | Recommended Uses For Product | Replacement for MSI Alpha 15 A3DDK A4DEK B5EEK B5EX Alpha 17 B5EEK Pulse GL66 12UGK Sword 15 A11UG Series Laptop | | Reusability | Rechargeable | | Battery Capacity | 5845 Milliamp Hours | | Voltage | 15.4 Volts | | Battery Cell Type | Lithium Ion | ## Product Details - **Number of Batteries:** 1 A batteries required. - **Brand:** ZTHY - **Battery Cell Composition:** Lithium Ion - **Battery Capacity:** 5845 Milliamp Hours - **Recommended Uses For Product:** Replacement for MSI Alpha 15 A3DDK A4DEK B5EEK B5EX Alpha 17 B5EEK Pulse GL66 12UGK Sword 15 A11UG Series Laptop ## Images ![BTY-M55 Battery 90Wh Replacement for MSI Pulse GL66 GL76 12UGK 12UGSZOK 12UGSZK 12UGOK Alpha 15 A3DDK A4DEK B5EX 17 B5EEK Pulse 15 B13VFK B13VGK Katana GF66 11UG Crosshair 15 17 B12UGZ Sword 15 A11UG - Image 1](https://m.media-amazon.com/images/I/719WBwdjzXL.jpg) ![BTY-M55 Battery 90Wh Replacement for MSI Pulse GL66 GL76 12UGK 12UGSZOK 12UGSZK 12UGOK Alpha 15 A3DDK A4DEK B5EX 17 B5EEK Pulse 15 B13VFK B13VGK Katana GF66 11UG Crosshair 15 17 B12UGZ Sword 15 A11UG - Image 2](https://m.media-amazon.com/images/I/6119KYbwyTL.jpg) ![BTY-M55 Battery 90Wh Replacement for MSI Pulse GL66 GL76 12UGK 12UGSZOK 12UGSZK 12UGOK Alpha 15 A3DDK A4DEK B5EX 17 B5EEK Pulse 15 B13VFK B13VGK Katana GF66 11UG Crosshair 15 17 B12UGZ Sword 15 A11UG - Image 3](https://m.media-amazon.com/images/I/71uOebEvdpL.jpg) ![BTY-M55 Battery 90Wh Replacement for MSI Pulse GL66 GL76 12UGK 12UGSZOK 12UGSZK 12UGOK Alpha 15 A3DDK A4DEK B5EX 17 B5EEK Pulse 15 B13VFK B13VGK Katana GF66 11UG Crosshair 15 17 B12UGZ Sword 15 A11UG - Image 4](https://m.media-amazon.com/images/I/61iuxyDME8L.jpg) ![BTY-M55 Battery 90Wh Replacement for MSI Pulse GL66 GL76 12UGK 12UGSZOK 12UGSZK 12UGOK Alpha 15 A3DDK A4DEK B5EX 17 B5EEK Pulse 15 B13VFK B13VGK Katana GF66 11UG Crosshair 15 17 B12UGZ Sword 15 A11UG - Image 5](https://m.media-amazon.com/images/I/71Q2Da7TCOL.jpg) ## Customer Reviews ### ⭐ NOT a new Battery! *by J***Z on March 11, 2025* EDIT: after running MSI's Battery calibration tool multiple times and doing a complete charge and discharge cycle 3 times, the battery is even worse now at 30..4 percent wear in HWiNFO as well as the powercfg tool in the command prompt. I have already requested a return...Complete waste of time. This battery, while a genuine one as far as i can tell, is even worse than the original one I took out. The battery I received already has 25.5 percent wear on it. (See pictures) I thought i was gonna get a good one as the ones on eBay were cheaper but I guess you don't always get what you pay for.Note: If you buy this battery please use HWiNFO to check the battery health before you return it. You might get lucky and get a good one, unlike me. ## Frequently Bought Together - BTY-M55 Battery 90Wh Replacement for MSI Pulse GL66 GL76 12UGK 12UGSZOK 12UGSZK 12UGOK Alpha 15 A3DDK A4DEK B5EX 17 B5EEK Pulse 15 B13VFK B13VGK Katana GF66 11UG Crosshair 15 17 B12UGZ Sword 15 A11UG - Crucial 16GB DDR4 RAM, 3200MHz CL22 (or 2933MHz or 2666MHz) Laptop Memory, SODIMM 260-Pin, Compatible with 13th Gen Intel Core and AMD Ryzen 7000 - CT16G4SFRA32A - HT03XL L11119-855 Laptop Battery for HP Pavilion 14-CE 14-CF 14-DF 15-CS 15-DA 15-DB 15-DW 17-by 17-CA Series 15-CS0053CL 15-DW0033NR 15-DA0014DX L11421-542 L11421-2C2 HSTNN-UB7J HSTNN-DB8R HT03041XL --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/607205576-bty-m55-battery-90wh-replacement-for-msi-pulse-gl66-gl76](https://www.desertcart.co.uk/products/607205576-bty-m55-battery-90wh-replacement-for-msi-pulse-gl66-gl76) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-18*