BTI LN-T440PX9 Notebook Battery - 8400 mAh - 10. 8V DC - Li-Ion - Proprietary Size for Lenovo L440/L540/T440p/T540p/W540/W541
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Product Features
Product Overview
The BTI LN-T440PX9 is a high-capacity rechargeable notebook battery designed as a direct replacement for specific Lenovo business laptop models. With 8400 mAh capacity and stable 10.8V DC output, this battery provides reliable extended runtime for mobile professionals who depend on their laptops throughout the workday.
Engineered with lithium-ion technology, the battery offers improved energy density and reduced weight compared to older battery types. The proprietary form factor ensures perfect fit and secure connection in compatible Lenovo notebooks, maintaining the original equipment's physical profile and integration.
This section brings together practical product details such as Application/Usage, Battery Rechargeable, Battery Size, Compatibility, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
In practical terms, this overview should help a buyer understand what the product is, the type of environment it suits, and the core reasons it may be chosen over a more generic alternative. That context is especially useful for business purchasing, where fit, consistency, and ease of use usually matter as much as individual specifications.
Technical Overview
This battery utilizes advanced lithium-ion chemistry, which delivers consistent power output while supporting numerous recharge cycles. The 8400 mAh rating represents substantial energy storage, directly translating to longer usable time between charges for compatible laptops.
The 10.8V DC output matches the voltage requirements of the target Lenovo systems, ensuring safe and efficient power delivery without risk of voltage mismatch. The proprietary battery size is specifically engineered to fit the battery compartments of Lenovo L440, L540, T440p, T540p, W540, and W541 notebooks with precise dimensions and connector alignment.
This section brings together practical product details such as Application/Usage, Battery Rechargeable, Battery Size, Compatibility, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
A strong technical summary explains how the product's interfaces, hardware profile, and operating characteristics work together in real deployment. Buyers often need this context to confirm compatibility with existing devices, expected performance in daily use, and whether installation will be straightforward for IT staff or end users.
Key Product Advantages
The BTI LN-T440PX9 combines substantial capacity with reliable performance, offering several distinct advantages for notebook users seeking dependable battery replacement.
Extended Runtime
With 8400 mAh capacity, this battery provides significantly longer usage time between charges compared to standard capacity batteries, reducing the frequency of recharging interruptions during critical work sessions.
- 8400 mAh high capacity
- Longer work sessions between charges
- Reduced charging frequency
Precision Compatibility
Designed specifically for Lenovo L440, L540, T440p, T540p, W540, and W541 notebooks, this battery ensures perfect physical fit and electrical compatibility without modification or adapter requirements.
- Exact fit for listed models
- No adapters needed
- Secure connector alignment
Deployment / Use Cases
This battery serves as an essential replacement component for business and professional notebook users who require reliable mobile computing power. It's particularly valuable in environments where access to power outlets is limited or intermittent.
Field service technicians, sales professionals, students, and remote workers will appreciate the extended runtime that allows them to complete tasks without searching for charging opportunities. The battery also functions as a cost-effective replacement for aging original batteries that no longer hold sufficient charge, restoring notebook mobility without requiring full system replacement.
Business Mobility
Ideal for professionals who work away from desks or in locations with limited power access, ensuring continuous productivity during meetings, travel, or client site visits.
System Maintenance
Serves as a direct replacement for worn batteries in compatible Lenovo notebooks, extending the useful life of existing hardware investments while maintaining original performance specifications.
Highlights
- 8400 mAh high capacity for extended notebook runtime
- 10.8V DC output voltage matches Lenovo system requirements
- Lithium-ion chemistry provides reliable rechargeable performance
- Proprietary size ensures perfect fit for compatible Lenovo notebooks
- Compatible with Lenovo L440, L540, T440p, T540p, W540, and W541 models
- 18-month limited warranty for peace of mind
- WEEE compliant for environmentally responsible disposal
- Manufactured by Battery Technology, Inc. with quality components
Specifications
| Specifications | |
|---|---|
| Manufacturer | Battery Technology, Inc |
| Manufacturer Part Number | LN-T440PX9 |
| Brand Name | BTI |
| Product Name | Battery |
| Packaged Quantity | 1 |
| Product Type | Battery |
| Battery Information | |
| Application/Usage | Notebook |
| Battery Rechargeable | Yes |
| Battery Size | Proprietary Battery Size |
| Battery Chemistry | Lithium Ion (Li-Ion) |
| Battery Capacity | 8400 mAh |
| Output Voltage | 10.8 V DC |
| Miscellaneous | |
| Compatibility | Lenovo Notebook: L440 L540 T440p T540p W540 W541 |
| Country of Origin | China |
| Environmentally Friendly | Yes |
| Environmental Compliance | Waste Electrical and Electronic Equipment Directive (WEEE) |
| Warranty | |
| Limited Warranty | 18 Month |
FAQ
What Lenovo notebook models is this battery compatible with?
The BTI LN-T440PX9 battery is specifically designed for Lenovo L440, L540, T440p, T540p, W540, and W541 notebook models. It uses a proprietary form factor and connector that ensures perfect physical and electrical compatibility with these systems without requiring adapters or modifications.
What is the capacity of this notebook battery?
This battery has a capacity of 8400 mAh (milliampere-hours), which represents substantial energy storage for extended runtime. The high capacity allows compatible notebooks to operate longer between charges compared to standard capacity batteries, reducing the frequency of recharging interruptions during work sessions.
What voltage does this battery output?
The battery delivers 10.8 volts DC (direct current) output, which matches the voltage requirements of the compatible Lenovo notebook systems. This ensures safe and efficient power delivery without risk of voltage mismatch that could potentially damage notebook components or reduce performance.
What type of battery chemistry does this product use?
This battery utilizes lithium-ion (Li-Ion) chemistry, which offers several advantages including higher energy density, lighter weight, and better performance over multiple charge cycles compared to older battery technologies. Lithium-ion batteries also have minimal memory effect, allowing partial charging without reducing overall capacity.
What warranty coverage does this battery include?
The BTI LN-T440PX9 notebook battery comes with an 18-month limited warranty from the manufacturer. This warranty period provides substantial coverage for defects in materials or workmanship, offering peace of mind for business and professional users who depend on reliable notebook performance.
Is this battery rechargeable and environmentally compliant?
Yes, this is a fully rechargeable battery designed for numerous charge cycles throughout its service life. The product is WEEE (Waste Electrical and Electronic Equipment Directive) compliant, meaning it meets European environmental standards for responsible disposal and recycling at end of life, reducing environmental impact.
What power capacity is listed for this UPS?
Power specifications help show where the unit fits best, including the type of load level, electrical environment, and backup role it is intended to support. These are usually the most decision-critical facts in a UPS or power-protection comparison.
What voltage details are listed?
The listed power specification is 10.8 V DC, which helps position the unit for the right load level and installation role.
| Qty | Price | Available |
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