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Black rectangular lithium-ion laptop battery with connector strip

Beisite

Beisite BTY-M491 laptop battery 11.4V 52.4W black

SKU CH-RB8D-P7ZKP

Replacement lithium-ion battery for MSI Modern 15 A10 and A11 series laptops, 11.4V 52.4Wh

  • Battery typeLithium-Ion
  • Battery voltage rating11.4 V
  • Battery capacity52.4 W
  • Product colorBlack
  • Product typeBattery
  • 4W capacity powers extended work sessions
  • 4V lithium-ion chemistry matches original specs
  • Direct replacement for BTY-M491 and 3ICP6/71/74
  • Fits Modern 15 A10, A11, A4 and Summit B15 series
  • Brand-new condition with 12-month manufacturer warranty

Direct replacement for Modern 15 series

The Beisite BTY-M491 is a new lithium-ion battery rated at 11.4V and 52.4W. It replaces part numbers BTY-M491 and 3ICP6/71/74. The unit fits numerous Modern 15 models including A10M, A10RAS, A10RB, A10RD, A11M, A11SB, A4M and A4MW variants. It is intended for owners of those specific laptops needing a fresh power source.

Steady output through a full discharge

Lithium-ion chemistry maintains a stable voltage curve across the 52.4W capacity during continuous use. The 11.4V nominal rating supports consistent system operation without the sharp drop-off seen in aged cells. Users can expect reliable runtime for typical productivity workloads until the pack reaches its low-voltage threshold.

Limited to listed Modern 15 chassis

This battery only fits the exact model numbers cited in the compatibility list. It will not work in other Modern 15 configurations, different series or laptops from other manufacturers. Buyers whose machine is not explicitly named must source the correct part for their specific chassis.

How it compares

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

Price $51.99
Pricier than about 83% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameBTY-M491
Model nameBTY-M491
Part number3ICP6/71/74
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating11.4 V
Battery capacity52.4 W

Questions about this item

Does the 11.4V 52.4W lithium-ion cell run hot or draw extra power during all-day use?

The battery matches the original 11.4V 52.4W specification, so heat and power draw remain the same as the factory pack under normal load.

What must my MSI Modern 15 already have for this BTY-M491 to fit and work?

Your laptop must use the BTY-M491 or 3ICP6/71/74 part number and be one of the listed Modern 15 A10, A11, A4 or Summit B15 models.

Will this replacement work alongside the original charger and BIOS on an older Modern 15 A10RB?

Yes, it replaces the BTY-M491 directly and is compatible with the A10RB series, so the existing charger and BIOS recognise it normally.

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