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New B31N1909 48Wh 11.4V 3-Cell Li-Polymer Battery for ASUS ExpertBook P2 P2451 L2502 Replaces 0B200-03670000 Grade A Cells 12 Month Warranty
- Restore Your ASUS ExpertBook Battery Life Dont let a degraded battery slow down your business productivity. This 48Wh B31N1909 replacement delivers true capacity get back to work, meetings, and travel without constantly hunting for an outlet.
- Exact Fit for ExpertBook P2 & L2 Series Compatible with ASUS ExpertBook P2 P2451FA/P2451FB and ExpertBook L2 L2502FYA/L2502CYA series. Replaces OEM part numbers B31N1909, 0B200-03670000, 0B200-03670100. Direct swap factory alignment clips and mounting holes.
- 48Wh 11.4V 3Cell LiPolymer 4212mAh capacity provides reliable power for business workloads. No more sudden shutdowns at 2030% or performance throttling when unplugged keep working without limits.
- Premium Grade A Cells True Capacity Manufactured with brand new Grade A LiPolymer cells, not recycled or lowgrade. Builtin overcharge, overdischarge, shortcircuit, overtemperature, and overcurrent protection. Meets CE, RoHS, UN38.3, and MSDS safety standards.
- Important Check Your Model This B31N1909 is for ExpertBook P2451 and L2502 series only. B31N1842, B31N1914, and other 3cell batteries have different cable lengths and mounting holes NOT interchangeable. Verify your model before ordering. Backed by 30day money return and 12month warranty.
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Overview
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Why You Need This Battery
Your ASUS ExpertBook P2 or L2 is a reliable business laptop built for professionals, but even the best batteries degrade. You may have noticed shorter runtime, unexpected shutdowns at 20-30%, or failure to hold a charge. Cheap replacements often give false capacity, swell, or fail within months. This B31N1909 battery delivers true 48Wh / 4212mAh capacity with Grade A Li-Polymer cells.
Designed for ASUS ExpertBook P2 & L2 Series
Direct fit for: ExpertBook P2 P2451FA (EB0091R, EB0096R, EB0352R, EB0354R, EK0008, EK0009, EK0029R, EK0031R, EK0047, EK0100R, EK0174, EK0229T, EK0261), P2451FB (EK0064, EK0092R, EK0255, EK0848R, EK0849, P2451FB-1A), ExpertBook L2 (L2502FYA, L2502CYA, L2502CYA-EJ0021X).
Replaces OEM: B31N1909, 0B200-03670000, 0B200-03670100.
Specification Detail
Model B31N1909
Chemistry Li-Polymer
Cells 3-Cell (3ICP6/60/80)
Voltage 11.4V
Rated Capacity 4212mAh
Total Energy 48Wh
Color Black
Safety CE, RoHS, UN 38.3, MSDS
Condition Brand new Grade A cells
Warranty 30-day return + 12 months
Critical Compatibility Warning
Compatible: ExpertBook P2 P2451FA/P2451FB, ExpertBook L2 L2502FYA/L2502CYA.
NOT Compatible: B31N1842, B31N1914 (different cable length/mounting holes), any 4-cell or 6-cell batteries, other ASUS models.
What a Cheap Battery Costs You
Short runtime, fake capacity (38-42Wh instead of 48Wh), swelling risk, performance throttling, system errors.
Our Battery Delivers
True 48Wh capacity, Grade A cells, 6-7+ hours runtime (light use), low swelling risk, CE/RoHS/UN 38.3 /MSDS certified, 12-month warranty.
Who Is This Battery For?
ASUS ExpertBook P2 P2451FA/P2451FB users, ExpertBook L2 L2502FYA/L2502CYA owners, business professionals needing reliable power for travel and meetings, anyone with a swollen or failing original battery.
Why Choose Our Battery
Genuine Grade A Li-Polymer cells (not recycled), exact OEM specs matching ASUS 48Wh / 11.4V design, 5-layer safety protection (over-charge, over-discharge, over-current, short-circuit, over-temperature), safety certified CE/RoHS/UN 38.3 /MSDS, 100% tested, 12-month warranty.
Installation Note
Internal built-in battery with long multi-pin ribbon cable connector on left side. Factory alignment clips and mounting holes ensure perfect fit no modifications needed. Requires removing bottom cover (Phillips screws). Professional installation recommended if inexperienced. Tools not included.
What's Included
1 x B31N1909 Replacement Battery (48Wh, 3-cell)
Before You Order Checklist
My laptop is ASUS ExpertBook P2 P2451FA/P2451FB or L2 L2502 series.
Original battery part number is B31N1909, 0B200-03670000, or 0B200-03670100.
NOT ordering for B31N1842 or B31N1914 they are NOT compatible.
I understand 48Wh is the ONLY capacity for this model.
I confirmed my model number from label on bottom of laptop.
Your ASUS ExpertBook P2 or L2 is a reliable business laptop built for professionals, but even the best batteries degrade. You may have noticed shorter runtime, unexpected shutdowns at 20-30%, or failure to hold a charge. Cheap replacements often give false capacity, swell, or fail within months. This B31N1909 battery delivers true 48Wh / 4212mAh capacity with Grade A Li-Polymer cells.
Designed for ASUS ExpertBook P2 & L2 Series
Direct fit for: ExpertBook P2 P2451FA (EB0091R, EB0096R, EB0352R, EB0354R, EK0008, EK0009, EK0029R, EK0031R, EK0047, EK0100R, EK0174, EK0229T, EK0261), P2451FB (EK0064, EK0092R, EK0255, EK0848R, EK0849, P2451FB-1A), ExpertBook L2 (L2502FYA, L2502CYA, L2502CYA-EJ0021X).
Replaces OEM: B31N1909, 0B200-03670000, 0B200-03670100.
Specifications
You Can TrustSpecification Detail
Model B31N1909
Chemistry Li-Polymer
Cells 3-Cell (3ICP6/60/80)
Voltage 11.4V
Rated Capacity 4212mAh
Total Energy 48Wh
Color Black
Safety CE, RoHS, UN 38.3, MSDS
Condition Brand new Grade A cells
Warranty 30-day return + 12 months
Critical Compatibility Warning
Compatible: ExpertBook P2 P2451FA/P2451FB, ExpertBook L2 L2502FYA/L2502CYA.
NOT Compatible: B31N1842, B31N1914 (different cable length/mounting holes), any 4-cell or 6-cell batteries, other ASUS models.
What a Cheap Battery Costs You
Short runtime, fake capacity (38-42Wh instead of 48Wh), swelling risk, performance throttling, system errors.
Our Battery Delivers
True 48Wh capacity, Grade A cells, 6-7+ hours runtime (light use), low swelling risk, CE/RoHS/UN 38.3 /MSDS certified, 12-month warranty.
Who Is This Battery For?
ASUS ExpertBook P2 P2451FA/P2451FB users, ExpertBook L2 L2502FYA/L2502CYA owners, business professionals needing reliable power for travel and meetings, anyone with a swollen or failing original battery.
Why Choose Our Battery
Genuine Grade A Li-Polymer cells (not recycled), exact OEM specs matching ASUS 48Wh / 11.4V design, 5-layer safety protection (over-charge, over-discharge, over-current, short-circuit, over-temperature), safety certified CE/RoHS/UN 38.3 /MSDS, 100% tested, 12-month warranty.
Installation Note
Internal built-in battery with long multi-pin ribbon cable connector on left side. Factory alignment clips and mounting holes ensure perfect fit no modifications needed. Requires removing bottom cover (Phillips screws). Professional installation recommended if inexperienced. Tools not included.
What's Included
1 x B31N1909 Replacement Battery (48Wh, 3-cell)
Before You Order Checklist
My laptop is ASUS ExpertBook P2 P2451FA/P2451FB or L2 L2502 series.
Original battery part number is B31N1909, 0B200-03670000, or 0B200-03670100.
NOT ordering for B31N1842 or B31N1914 they are NOT compatible.
I understand 48Wh is the ONLY capacity for this model.
I confirmed my model number from label on bottom of laptop.
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
- CONTACT
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by Ebuy limited Return Policy
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