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Black rectangular lithium-ion laptop battery weighing 210g

KingSener

KingSener L19C3PF9 laptop battery 4000mAh 11.34V 45WH

SKU CH-GK3A-2Q8TD MPN L19C3PF9

Replacement lithium-ion battery delivers 4000mAh at 11.34V for compatible Lenovo ThinkBook 14 and 15 models

  • Battery typeLithium-Ion
  • Battery voltage rating11.34 V
  • Battery capacity4,000 mAh
  • Product colorBlack
  • Product typeBattery
  • Compatible with4,000 mAh/45WH
  • 45 Wh capacity powers Lenovo ThinkBook 14 and 15 series through the day
  • 34 V lithium-ion chemistry matches original voltage for stable operation
  • 4000 mAh rating replaces L19C3PF9, L19M3PF9 and related part numbers
  • 210 g lightweight cell fits 14‑IML, 14‑IIL, 15‑IML and 15‑IIL chassis
  • 100 % brand‑new condition supplied with two‑year coverage

Replacement Battery for ThinkBook 14 and 15

This KingSener L19C3PF9 lithium-ion battery is built for Lenovo ThinkBook 14-IML, 14-IIL, 15-IML and 15-IIL models. It matches the original 11.34V voltage and 4000mAh capacity, so the laptop recognises it without BIOS updates. Installers simply swap the old pack and resume work.

Thermals Noise and Power Draw

The 45Wh cell uses standard Li-Ion chemistry that runs cool during typical office loads and video playback. No moving parts mean silent operation, and the pack draws only the current the laptop requests. Normal charging cycles complete within the maker’s expected time window.

Upgrade From Degraded Original Pack

This unit replaces Lenovo part numbers L19M3PF9, L19C3PF9, L19M3PF1, L19C3PF1, L19D3PF2, L19D3PF0, L19M3PF0, L19C3PF0, L19L3PF8 and L19M3PF2. The jump is worth it when the original battery holds less than half its design capacity or shuts down under load. Buyers who need a higher-capacity pack than 45Wh or a different voltage should look elsewhere.

How it compares

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

Price $36.99
Pricier than about 66% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameKingSener
Model nameL19C3PF9
Part numberL19C3PF9
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating11.34 V
Battery capacity4,000 mAh
Size & build
Product weight210g
Compatibility
Compatible with4,000 mAh/45WH

Questions about this item

How do I install the L19C3PF9 battery in my ThinkBook 14-IIL 20SL, and what step is often missed?

Power off, unplug the AC adapter, remove the base screws, disconnect the old battery cable before lifting it out, then connect the new pack and reassemble.

What replacement will the L19C3PF9 need after extended use?

The Li-Ion cells degrade over time; when runtime drops below useful levels you replace the whole 4000mAh pack.

What limit appears first during sustained load on this 11.34V battery?

Voltage sag under heavy draw reduces available capacity before the 45WH rating is fully used.

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