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Black rectangular lithium-ion laptop battery with label showing 15V 44Wh

Beisite

Beisite A41-X550E 44Wh 15V laptop battery 41NR19/66

SKU CH-QXMQ-ZT3SB

44 Wh lithium-ion replacement battery at 15 V for select Asus A450, X450 and F450 series laptops

  • ColorBlack
  • TypeBattery
  • CompatibilityFor A450 A450E A450J A450V A450JF X450E X450C F450E X751L K5
  • Battery TypeLithium-Ion
  • Battery Voltage15V
  • Battery Capacity44Wh
  • Reliable power for compatible Asus laptops with 44Wh lithium-ion cell
  • Direct replacement for part numbers 41NR19/66 and A41-X550E
  • Fits X450, A450 and F450 series models including X450E and A450JF
  • Steady 15V output matches original specification for stable operation
  • Brand-new condition with 12-month supplier warranty included

Compatible Asus laptop battery

The Beisite A41-X550E is a 44Wh lithium-ion replacement battery rated at 15V. It fits Asus A450, X450, F450, X751 and X750 series models including the A450E, X450J, F450E, X751L and X750JA. The black unit replaces part numbers A41-X550E and 41NR19/66. It is supplied new with a 12 month warranty.

Sustained discharge behaviour

The 44Wh capacity delivers consistent energy output across the discharge curve rather than a brief peak. Lithium-ion chemistry maintains stable voltage during extended workloads such as document editing or video playback. No memory effect means the pack can be topped up at any state of charge without capacity loss.

Thermals and power draw

Normal operation stays within the 15V design envelope with minimal heat rise. The pack draws only the current the laptop requests, so fan activity and acoustic profile remain unchanged from the original battery. Power consumption scales directly with system load and the 44Wh rating.

Highlights

  • Reliable power for compatible Asus laptops with 44Wh lithium-ion cell
  • Direct replacement for part numbers 41NR19/66 and A41-X550E
  • Fits X450, A450 and F450 series models including X450E and A450JF
  • Steady 15V output matches original specification for stable operation
  • Brand-new condition with 12-month supplier warranty included

Specifications

BrandA41-X550E
ModelA41-X550E
Part Number41NR19/66
ColorBlack
TypeBattery
CompatibilityFor A450 A450E A450J A450V A450JF X450E X450C F450E X751L K550D X751M X750J X750JA Series
Battery TypeLithium-Ion
Battery Voltage15V
Battery Capacity44Wh

Questions about this item

Will the 15V 44Wh lithium-ion pack run hot during a full workday?

The 15V 44Wh lithium-ion cell is designed for typical office loads and should not become excessively warm under normal daily use.

Do I need the original Asus charger to charge this A41-X550E battery?

Any charger that supplies the correct 15V output for the listed Asus X450, A450 or F450 series will charge the pack.

Can this 41NR19/66 replacement work in an older X450E that still has its factory battery?

Yes, the 41NR19/66 matches the original A41-X550E specification for the X450E series, so it fits and functions as a direct swap.

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