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Rectangular black laptop battery with connector pins

myVolts

myVolts B31N1402 11.4V 48Wh laptop battery

SKU CH-4MB6-J8N4R MPN B31N1402

11.4V 48Wh Li-ion replacement battery with 500 recharge cycles for Asus Q551, Q552 and N591 series notebooks

  • Replacement power for compatible Asus notebooks
  • 4V Li-ion chemistry delivers 48Wh capacity
  • Grade A cells support up to 500 recharge cycles
  • Built-in circuit protection maintains safety and stability
  • CE, FCC and RoHS certified for compliance

Compatible 11.4V 48Wh replacement battery

This 11.4V 48Wh lithium-ion replacement battery fits Asus Notebook Q551LN, Q551, N591LB, Q551L and Q552uB series laptops. It replaces original part numbers B31N1402, B31Bn9H, 0B200-01050000 and 0B200-01050000M. The pack uses grade A cells and delivers 4110mAh capacity with built-in circuit protection for safety and stability.

Installation kit included, allow activation cycles

The package supplies one battery, four screwdrivers and a pry bar for opening the laptop chassis. Installation requires removing the bottom cover and disconnecting the old pack; no soldering is needed. The new battery must be charged and discharged three to four times, taking about seven to eight hours, to activate the lithium-ion cells to maximum capacity.

Check your exact model and part number first

Verify that your laptop model appears in the compatible list and that the original battery part number matches one of the codes above. The battery is not suitable for Asus models outside the Q551 and Q552 series or for any other brand. Users who need a different voltage, capacity or form factor should look for the correct part for their specific device.

How it compares

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

Price $58.99
Pricier than about 88% of the 27,790 comparable items (median $30.99).

Specifications

No published specifications for this item yet.

Questions about this item

How can I verify the battery is working correctly after installing it in my Asus Q551LN?

After installation, charge the battery fully and confirm the system reports 11.4V and 48Wh capacity. The battery should reach maximum capacity after 3 to 4 charge and discharge cycles taking about 7 to 8 hours each.

What items are included in the package and what must I buy separately?

The box contains one B31N1402 Li-ion battery, four screwdrivers and one pry bar for installation. No additional parts or tools are required for the replacement.

Which capacity version should I choose for my Asus N591LB?

This model is offered as a single 48Wh / 4110mAh 3-cell Li-ion unit at 11.4V, matching the original B31N1402 specification for the Q551, Q552uB and N591LB series.

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