Fancy Buying L18C4PF3 Laptop Battery for Lenovo 14"

Fancy Buying L18C4PF3 is a direct-fit 45Wh lithium-ion replacement battery designed to restore full runtime to compatible Lenovo IdeaPad C340, S540 and Flex 14 series laptops.

This high-quality replacement battery offers a 15.36V, 45Wh (4-cell) design built with protective circuitry for overcharge, over-discharge, overcurrent and temperature control. It’s made to match OEM fit and electrical specifications so you can swap it into supported Lenovo models and regain mobile productivity without buying a new laptop.

Which Lenovo models will this battery work with?

The Fancy Buying L18C4PF3 is compatible with a wide list of 14-inch Lenovo IdeaPad and Flex models. It fits both API and IML configurations as well as S540 and Flex-14 series that use the same battery bay and connector layout.

• IdeaPad C340-14API, C340-14IML, C340-14IWL
• IdeaPad S540-14API, S540-14IML, S540-14IWL (including touch variants)
• IdeaPad Flex-14IML, Flex-14IWL, Flex-14API (Type 81SS / Model 81SS0005US)

How long will the battery last and what protections does it include?

This battery is rated for up to 500 recharge cycles and includes multiple protection circuits to extend service life and protect your laptop. The integrated safeguards help reduce risk from overcurrent, overcharge, over-discharge, short-circuit and excessive temperature.

• Rated capacity: 45Wh at 15.36V (4-cell Li-ion)
• Protection: overcharge, over-discharge, overcurrent, short-circuit, temperature control
• Expected lifecycle: around 500 full recharge cycles

Is this an original Lenovo part or a compatible replacement?

The Fancy Buying L18C4PF3 is a brand-new compatible replacement manufactured to meet OEM electrical and dimensional standards, but it is not an official Lenovo-branded cell pack. It uses high-quality materials and circuit boards to ensure stable charging and efficient power delivery.

• 100% new from manufacturer components
• Meets OEM form factor and connector layout for listed models
• Replaces part numbers such as L18C4PF3, L18M4PF3, L18M4PF4 and listed 5B10... references

What warranty and return options come with the battery?

Fancy Buying includes a 12-month replacement warranty plus a 60-day return window to ensure you have time to test fit and function. If there’s a problem, contact the seller through the store messaging to begin the return or replacement process.

• 60-day return policy (window closes one month after receipt)
• 12-month replacement warranty for defects
• Seller support via the store "ask a question" contact link

Who is this for? If your Lenovo IdeaPad C340, S540 or Flex 14 laptop shows reduced battery life, fails to hold a charge, or you need a spare for travel, this Fancy Buying L18C4PF3 replacement provides an affordable, OEM-compatible option. It’s aimed at students, remote workers, technicians and anyone who wants a like-for-like battery swap to restore original runtime and reliability without replacing the entire laptop.