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Rectangular black lithium polymer laptop battery, 4200 mAh 11.4V

Dr. Battery

Dr. Battery MPL03319P-05 laptop battery 4200 mAh 11.4V

SKU CH-81XN-KWD0V

Replacement lithium-polymer battery delivering 4200 mAh at 11.4 V for compatible Asus K501 and VivoBook A501 series laptops

  • Battery typeLithium Polymer
  • Battery voltage rating11.4 V
  • Battery capacity4,200 mAh
  • Product colorBlack
  • Product typeBattery
  • Compatible withAsus K501 / K501L / K501 lb / K501LX / K501LX-DM014H / K501L
  • 48 Wh capacity powers Asus K501 and VivoBook A501 series
  • 4 V lithium-polymer cell matches original voltage specification
  • Built-in smart chip enables quicker charging and longer discharge time
  • circuit, overheat and overload protections maintain safe usage
  • New condition ensures full rated performance from first charge

Dr. Battery MPL03319P-05 replacement battery

This 11.4V lithium-polymer pack is built for Asus K501, K501L, K501LB, K501LX, K501U, K501UB, K501UQ, K501UX and related VivoBook A501 models. It restores mobility to ultraportables that no longer hold a charge. Buyers needing a different voltage or form factor must look elsewhere.

4200 mAh capacity with 48 Wh energy rating

The cell delivers a full day of light office work and web browsing on a single charge. Heavier loads such as video editing or sustained gaming will drain it faster, so users who need all-day runtime under high draw should plan for a charger or a higher-capacity alternative.

Black polymer housing with integrated smart chip

The built-in controller manages charging current, prevents short circuits and guards against overheating or overload. The pack fits the original battery bay without adapters, so installation is a simple swap. No external cables or mounting hardware are required.

How it compares

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

Price $48.99
Pricier than about 81% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDr. Battery
Model nameMPL03319P-05
Product colorBlack
Product typeBattery
Power
Battery typeLithium Polymer
Battery voltage rating11.4 V
Battery capacity4,200 mAh
Compatibility
Compatible withAsus K501 / K501L / K501 lb / K501LX / K501LX-DM014H / K501LX-DM094H / K501LX-NH52 / K501U / K501UB / K501UB-DM116D / K501UQ / K501UW / K501UX / K501UX-AH71 / K501UX-WH74
Asus VivoBook A501C1-Z1-C10 / A501L / A501LX / A501LX-DM023H
Original Battery Part Number :
0B20001460100 / 0B200-01460100 / B31N1429

Questions about this item

Will this 11.4 V, 4200 mAh lithium-polymer pack run my Asus K501UX-AH71 the same way the original B31N1429 did?

Yes — it matches the original 11.4 V rating and 48 Wh capacity, so the K501UX-AH71 sees identical voltage and runtime.

How can I confirm the smart control chip is protecting against short circuit and overheat after I install it?

The battery charges normally, holds full capacity, and the laptop reports no thermal warnings during heavy use.

Does the box include any tools or extra screws for the K501LX-DM094H, or do I need to buy a screwdriver set separately?

Only the battery is supplied; you will need a small Phillips screwdriver to open the bottom case.

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