Fancy Buying Lenovo G40/G50/G500 Series Laptop Battery

The Fancy Buying L12L4E01 is a 14.8V, 2600mAh 4-cell Li-ion replacement battery that restores power to a wide range of Lenovo G, Z and S series laptops with built-in safety protections.

When your Lenovo laptop no longer holds a reliable charge, swapping in a compatible, OEM-standard battery can be the fastest, most cost-effective repair. This Fancy Buying battery is designed to match the original specifications of many Lenovo G40/G50/G500/G510 and Z-series models, offering regulated voltage, built-in overcharge and temperature safeguards, and a manufacturer-backed warranty.

Which Lenovo models and part numbers does this battery support?

This battery is engineered to fit multiple Lenovo model lines and a long list of part numbers to simplify compatibility checks. It replaces several OEM references and suits both everyday and business-focused laptops within the G, Z and S families.

• Compatible Lenovo models: G400s, G405s, G410s, G500s, G505s, G510s, S410p, S510p, Z710 and many G40/G50 series variants.
• Replaces part numbers such as L12L4E01, L12S4E01, L12M4A02 and associated factory codes (e.g., 121500171–121500176).
• Check your laptop’s service tag or the part number under the existing battery to confirm fit.

How long will the battery last and what performance can I expect?

Rated at 2600mAh and 14.8V, this 4-cell Li-ion pack gives reliable runtime comparable to the original battery when used under typical settings. The cell chemistry delivers stable discharge and supports up to roughly 500 recharge cycles when used and maintained properly.

• Capacity: 2600mAh—suitable for everyday web, office and media tasks.
• Voltage: 14.8V—matches OEM power delivery for compatible Lenovo models.
• Cycle life: up to ~500 full charge/discharge cycles when not exposed to excessive heat.

What safety features and quality standards are included?

Safety circuits and quality components are integrated to protect both the battery and the laptop. The pack includes overcurrent, overcharge, over-discharge and thermal protection to reduce risk of damage in normal operation.

• Overcharge and over-discharge circuit protection to preserve cells.
• Short-circuit and temperature control safeguards for safe operation.
• Assembled with tested materials and PCB standards to meet OEM-like performance.

How easy is installation and what warranty/support comes with the purchase?

Replacing the battery is a simple DIY task for most users: power down, remove the access panel or back cover, unplug the old pack, and reconnect the replacement. Fancy Buying backs this product with buyer-friendly support and a limited warranty for peace of mind.

• Installation: no special tools beyond a small screwdriver and a static-safe workspace.
• Warranty: 12 months coverage plus a 30-day refund policy if not satisfied.
• Support: customer service response within 24 hours via the seller’s contact channel.

Who is this for? If your Lenovo G-series, Z-series, or compatible S-series laptop is losing battery capacity, running out of power quickly, or shutting down unexpectedly, this Fancy Buying L12L4E01 replacement battery is a practical, cost-effective fix. It’s aimed at students, professionals, technicians and anyone who prefers repairing devices rather than replacing the entire laptop. Before ordering, confirm your device’s model or part number to ensure a proper match.