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Black rectangular lithium-ion laptop battery pack with label showing BTY-M55 90Wh 15.4V

KingSener

KingSener BTY-M55 90Wh 15.4V 5845mAh laptop battery

SKU CH-1FYD-6PQEY MPN BTY-M55

Replacement 90 Wh 15.4 V lithium-ion battery for MSI Alpha, Crosshair, Katana and Pulse laptops

  • Battery voltage rating15.4 V
  • Battery capacity5,845 mAh/90WH
  • 90 Wh capacity extends runtime for long sessions
  • 4 V output matches original MSI power requirements
  • 5845 mAh lithium-ion cells deliver reliable charge cycles
  • Compatible with Alpha, Crosshair, Katana, Pulse 15, 17 models
  • Replaces BTY-M55 925QA055H 4ICP5/63/133 part numbers

Direct replacement for MSI Alpha and Katana laptops

The KingSener BTY-M55 is a 90Wh lithium-ion battery rated at 15.4V and 5845mAh. It replaces part numbers BTY-M55, 925QA055H and 4ICP5/63/133 in compatible MSI notebooks. The unit ships new in black and is built as a direct swap for the original pack.

Check your exact model code before ordering

Compatibility covers specific MSI Alpha 15, Alpha 17, Katana GF66, Crosshair 15, Crosshair 17, Pulse GL66, Pulse GL76 and Pulse 15 series listed in the data. Verify the full model suffix on your laptop chassis matches one of the declared codes. This battery will not fit machines outside that list.

Black lithium-ion pack with integrated connector

The replacement cell uses a standard lithium-ion chemistry and a black housing that matches the original form factor. Its connector aligns with the motherboard socket on supported models for a tool-free install. No separate cables or mounting brackets are required for daily use.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $38.99
Pricier than about 70% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameKingSener
Model nameBTY-M55
Part numberBTY-M55 925QA055H 4ICP5/63/133
Power
Battery voltage rating15.4 V
Battery capacity5,845 mAh/90WH

Questions about this item

Does the BTY-M55 package include any tools or cables for fitting it into my MSI laptop?

The BTY-M55 is supplied as a standalone 90Wh replacement battery; no screwdrivers, cables or extra connectors are included.

My MSI Katana GF66 11UG and Pulse GL66 12UGK both appear on the list — is the BTY-M55 the same part for both models?

Yes, the BTY-M55 with part numbers BTY-M55 925QA055H 4ICP5/63/133 fits every model listed, including Katana GF66 11UG and Pulse GL66 12UGK.

What does the 90Wh rating mean for daily use on a 15.4V system?

At 15.4V the 5845mAh cells store 90Wh, giving a full charge cycle for compatible MSI Alpha, Crosshair, Katana and Pulse laptops.

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