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Black rectangular laptop battery with label showing 15.36V 54Wh 4 cell

NShi

NShi L17C4P71 laptop battery 15.36V 54Wh for ThinkPad X1 Yoga 2018

SKU CH-WFZW-GAN49

Replacement 15.36V 54Wh four-cell lithium-ion battery for the 2018 ThinkPad X1 Yoga

  • Battery type4 Cell Lithium-Ion
  • Battery voltage rating15.36 V
  • Battery capacity3520mah
  • Product colorBlack
  • Product typeBattery
  • Compatible withLENOVO THINKPAD X1 YOGA 2018
  • Direct replacement for multiple ThinkPad X1 Yoga 2018 OEM part numbers
  • 54 Wh capacity delivers extended runtime for mobile work
  • 36 V 4-cell lithium-ion matches original voltage specification
  • CE, FCC and RoHS certified for electrical safety compliance
  • Rigorously tested for correct voltage, circuit protection and low self-discharge

Replacement battery for ThinkPad X1 Yoga 2018

This 15.36 V lithium-ion pack restores power to the 2018 ThinkPad X1 Yoga. It delivers 54 Wh from four cells rated at 3520 mAh and matches the original L17C4P71 form factor. The unit is new and carries CE, FCC and RoHS safety certifications.

Upgrades from depleted or failing OEM packs

When the original battery no longer holds a useful charge or shuts down under load, this replacement returns the laptop to its factory runtime. The swap is worthwhile once daily unplugged use drops below the level needed for a typical work session.

Sustained output under continuous load

The four-cell design maintains stable voltage during extended workloads rather than only in short bursts. Built-in circuit protection guards against over-current and over-voltage while low self-discharge preserves capacity during storage periods.

How it compares

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

Price $46.99
Pricier than about 79% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameGreenTech
Model nameL17C4P71, L17M4P73, L17M4P71, 01AV499, 01AV475, 01AV474, SB10K97623
Product colorBlack
Product typeBattery
Power
Battery type4 Cell Lithium-Ion
Battery voltage rating15.36 V
Battery capacity3520mah
Compatibility
Compatible withLENOVO THINKPAD X1 YOGA 2018

Questions about this item

Does the 4-cell 15.36V battery match the internal connector and screw holes of the ThinkPad X1 Yoga 2018?

The pack is built to the L17C4P71 form factor, so its connector and mounting points align with the ThinkPad X1 Yoga 2018 chassis.

What is the correct order for fitting the battery and reconnecting the cable?

Power off the laptop, remove the base screws, disconnect the old pack, fit the new battery, reconnect its cable before refitting the base, then power on.

When should the 54Wh pack be swapped for a fresh unit?

Replace the battery when run-time drops noticeably or the system reports a significant capacity loss.

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