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Black rectangular lithium-ion laptop battery with label showing 11.4V 48WH

KingSener

KingSener L17L6P71 laptop battery 11.4V 48WH for Lenovo ThinkPad X280

SKU CH-NM0E-FXB41 MPN L17L6P71

A 11.4V 48WH lithium-ion replacement battery built for Lenovo ThinkPad X280 laptops

  • Battery Voltage11.4V
  • Battery Capacity4.19Ah/48WH
  • 48 Wh capacity extends runtime between charges
  • 4 V output matches original ThinkPad X280 specification
  • Li-ion cells deliver stable power without false capacity claims
  • 100 % new replacement fits exactly like the factory battery
  • Compatible with part numbers 01AV470 01AV471 01AV472 SB10K97617

Compatible replacement for ThinkPad X280

The KingSener L17L6P71 is a new lithium-ion battery built to match the original specifications for the Lenovo ThinkPad X280. It delivers 11.4V and 48WH capacity using 4.19Ah cells. The part replaces OEM numbers L17C6P71, L17M6P71, 01AV470, 01AV471, 01AV472 and SB10K97617. Buyers needing a different voltage or a higher watt-hour rating will not be served by this unit.

Fixed voltage and capacity ceiling

The battery operates at a single 11.4V output with a hard limit of 48WH energy storage. Runtime scales directly with the 4.19Ah cell rating and cannot be expanded. The pack uses a proprietary connector keyed to the X280 chassis, so it cannot power other laptop models or external devices. Users expecting fast-charge protocols or user-swappable cell modules will find none here.

Straightforward internal swap with break-in steps

Installation requires opening the X280 base cover, disconnecting the old pack and fitting the new one in the same footprint — no adapter cables or firmware flashes. The supplier recommends two to three full charge and discharge cycles at low current to calibrate the gauge. Leaving the AC adapter connected continuously, storing above 80% charge for long periods, or exposing the pack to heat and humidity are the common mistakes that shorten cell life.

Highlights

  • 48 Wh capacity extends runtime between charges
  • 4 V output matches original ThinkPad X280 specification
  • Li-ion cells deliver stable power without false capacity claims
  • 100 % new replacement fits exactly like the factory battery
  • Compatible with part numbers 01AV470 01AV471 01AV472 SB10K97617

Specifications

BrandKingSener
ModelL17L6P71
Part NumberL17C6P71 L17M6P71 L17L6P71
Battery Voltage11.4V
Battery Capacity4.19Ah/48WH

Questions about this item

Which part number matches my ThinkPad X280 — L17C6P71, L17M6P71 or L17L6P71?

All three part numbers refer to the same KingSener L17L6P71 battery, so any of them will fit your ThinkPad X280.

What does the 48 Wh rating mean for daily runtime on my X280?

The 48 Wh capacity at 11.4 V delivers 4.19 Ah of charge, giving a full-capacity replacement that matches the original design runtime.

Does this battery use the standard Lenovo interface for the X280?

Yes, it is built to the same form factor and connector as the original Lenovo battery, ensuring direct compatibility without adapters.

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