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Black rectangular lithium-ion laptop battery, 15.4V 90Wh

Beisite

Beisite BTY-M55 90Wh 15.4V laptop battery Alpha 15/17 Pulse Sword

SKU CH-HWFW-2X7G9

A 90Wh 15.4V lithium-ion replacement battery for Alpha 15 and 17 models including Pulse and Sword series

  • Battery typeLithium-Ion
  • Battery voltage rating15.4 V
  • Battery capacity90 Wh
  • Product colorBlack
  • Product typeBattery
  • Compatible withFor Alpha 15 A3DDK A4DEK B5EEK B5EX Series
  • 90Wh capacity extends runtime for Alpha 15 and Alpha 17 models
  • 4V lithium-ion cell matches original voltage for stable power delivery
  • Replaces part numbers BTY-M55, 7447925QA055H and 41CP5/63/133
  • Compatible with Pulse GL66 12UGK and Sword 15 A11UG laptops
  • Brand-new condition with 12-month warranty included

90Wh 15.4V replacement for Alpha 15 and Alpha 17

This lithium-ion battery delivers 90Wh at 15.4V and replaces part numbers BTY-M55, 7447925QA055H and 41CP5/63/133. It fits Alpha 15 models A3DDK, A4DEK, B5EEK and B5EX as well as Alpha 17 B5EEK. The black pack is supplied new with a 12 month warranty.

Sustained capacity for long sessions

The 90Wh rating supports extended use away from mains power without the voltage sag seen in lower-capacity packs. Lithium-ion chemistry maintains a stable 15.4V output through the discharge cycle so performance stays consistent during demanding workloads. A single charge covers a full working day for typical office tasks.

Verify your original part number before ordering

Check that the label on your existing battery shows BTY-M55, 7447925QA055H or 41CP5/63/133 to confirm physical and electrical match. The compatibility list also covers Pulse GL66 12UGK and Sword 15 A11UG, but other models are not guaranteed. Buyers who need a higher-capacity pack or a different voltage should look elsewhere.

How it compares

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

Price $52.99
Pricier than about 84% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameBTY-M55
Model nameBTY-M55
Part number41CP5/63/133
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating15.4 V
Battery capacity90 Wh
Compatibility
Compatible withFor Alpha 15 A3DDK A4DEK B5EEK B5EX Series

Questions about this item

How much heat or noise does the BTY-M55 90Wh 15.4V battery produce during all-day use?

The lithium-ion battery has no moving parts, so it runs silently and generates only normal warmth during charge or discharge cycles.

What must I already own for the BTY-M55 90Wh 15.4V battery to work in my laptop?

You need a compatible Alpha 15 A3DDK, A4DEK, B5EEK, B5EX, Alpha 17 B5EEK, Pulse GL66 12UGK or Sword 15 A11UG laptop that accepts the 41CP5/63/133 form factor.

Will the BTY-M55 90Wh 15.4V battery fit alongside the original charger and internal components in an older Alpha 15?

Yes, it replaces part numbers BTY-M55, 7447925QA055H and 41CP5/63/133, so it fits the existing battery bay and works with the stock 15.4V charging circuit.

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