Lenovo 4X50K14091

Overview

The Lenovo 4X50K14091 is a 6-cell lithium-ion battery designed specifically for ThinkPad P50 laptops. Delivering 90 watt-hours at 11.4 volts, it provides reliable power to keep your device running longer when away from a power source. This battery serves as a direct replacement for the original unit or as a spare to extend your laptop’s usage during travel, meetings, or remote work.

Equipped with a built-in safeguard chip, it ensures proper communication with Lenovo systems for accurate power management and system recognition. Over-discharge protection helps maintain battery health through repeated charge cycles, making it a dependable choice for professionals who rely on their P50 in various environments.

Key features

• Safeguard chip enables seamless authentication and power management with Lenovo ThinkPad P50 systems
• Over-discharge protection circuitry preserves battery longevity and performance over time
• 6-cell lithium-ion design balances capacity and weight for extended use without adding bulk
• Compatible as a direct replacement or spare to ensure uninterrupted productivity on the go
• Ideal for users who need reliable power during travel, client visits, classrooms, or fieldwork

Key specs

• Battery type: lithium-ion
• Capacity: 90 watt-hours
• Voltage: 11.4 volts
• Cell configuration: 6-cell
• Compatibility: Lenovo ThinkPad P50

Ideal uses and environments

This battery is well suited to professionals who spend extended periods away from desks, such as business travelers, consultants, and field technicians. It supports uninterrupted work during flights, client meetings, or locations with limited power access. Carrying a charged spare can prevent downtime during long sessions or unexpected power shortages, making it a practical addition to your mobile workstation setup.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

Learn more

Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

Learn more