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Black rectangular lithium-ion laptop battery with connector pins

Beisite

Beisite B31N1909 48Wh 11.4V laptop battery for Asus ExpertBook P2 2451 series

SKU CH-A763-FT9TE

48 Wh lithium-ion replacement battery at 11.4 V for Asus ExpertBook P2 2451 series laptops

  • ColorBlack
  • TypeBattery
  • Battery TypeLithium-Ion
  • Battery Voltage11.4V
  • Battery Capacity48Wh
  • 48 Wh lithium-ion cell restores full runtime for ExpertBook P2 2451 series
  • 4 V output matches original B31N1909 specification for stable power delivery
  • Replaces part numbers B31N1909 and 0B200-03670000 for direct fit
  • Compatible with multiple ExpertBook P2 2451FA and 2451FB sub-models
  • Brand-new battery supplied with 12-month manufacturer warranty

Replacement battery for ExpertBook P2 2451 series

This lithium-ion battery replaces part numbers B31N1909 and 0B200-03670000 in Asus ExpertBook P2 models including P2451, P2451FA and P2451FB variants. It is a new component supplied in black with a 12-month warranty. The cell chemistry is lithium-ion and the rated voltage is 11.4V.

Capacity match for original runtime

The single specification that confirms compatibility is the 48Wh capacity, equivalent to 4212mAh at 11.4V. Only a battery with this exact energy rating will deliver the same runtime as the original pack installed by Asus.

Steady discharge under daily workloads

Under sustained office workloads the 48Wh pack maintains a stable voltage curve without the sharp sag seen in lower-capacity alternatives. This behaviour preserves consistent performance during long meetings or travel days rather than fading after a short burst.

Highlights

  • 48 Wh lithium-ion cell restores full runtime for ExpertBook P2 2451 series
  • 4 V output matches original B31N1909 specification for stable power delivery
  • Replaces part numbers B31N1909 and 0B200-03670000 for direct fit
  • Compatible with multiple ExpertBook P2 2451FA and 2451FB sub-models
  • Brand-new battery supplied with 12-month manufacturer warranty

Specifications

BrandB31N1909
ModelB31N1909
Part Number0B200-03670000
ColorBlack
TypeBattery
Battery TypeLithium-Ion
Battery Voltage11.4V
Battery Capacity48Wh

Questions about this item

What does the 48 Wh rating mean for daily use on my ExpertBook P2 2451?

The 48 Wh capacity matches the original B31N1909 specification, so it delivers the same runtime you had when the laptop was new.

Which connector standard does the B31N1909 use and what does it limit?

It uses the proprietary Asus multi-pin connector built into the ExpertBook P2 2451 chassis; the battery only works with that exact socket.

Will the 11.4 V 48 Wh pack fit inside my ExpertBook P2 2451FB without modification?

Yes, the physical dimensions and screw-hole pattern are identical to the original 0B200-03670000 pack, so it drops straight into the battery bay.

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