45N1140 45N1141 45N1138 45N1139 Laptop Battery For Lenovo Thinkpad S440 S3-S431 V4400u Series
Model: 45N1140
Voltage: 14.8V
Capacity: 3100mAh/46Wh
Battery type: Li-ion
Product Overview
The 45N1140 45N1141 45N1138 45N1139 replacement battery is specially designed for Lenovo Thinkpad S440 S3-S431 V4400u laptops, offering reliable power and excellent performance.
Manufactured by Shenzhen Weijie Technology Co., Ltd., this Li-ion battery provides long-lasting capacity, stable charging, and enhanced safety, making it an ideal replacement for your original Lenovo Air battery.
Product Specifications
| Item | Specification |
| Model | 45N1140 45N1141 45N1138 45N1139 |
| Voltage | 14.8V |
| Capacity | 3100mAh/46Wh |
| Number of Cells | 4-Cell |
| Battery Type | Li-ion (Lithium-ion) |
| Condition | 100% Brand New, Grade A+ Cells |
| Color | Black |
| Certifications | CE / FCC / RoHS Certified |
| Warranty | 12 Months |
| Brand | Shenzhen Weijie Technology Co., Ltd. |
| Package Includes | 1 × Replacement Battery, 1 × User Manual |
| Computer Model | Lenovo Thinkpad S440 S3-S431 V4400u |
Key Features
100% Compatible with Lenovo Thinkpad S440 S3-S431 V4400u Series
High-quality Grade A+ Li-ion Cells for Superior Performance
Built-in Protection Circuit (Overcharge, Overheat, Short-Circuit Protection)
CE / FCC / RoHS Certified for Global Compliance
Direct Factory Supply from Shenzhen Weijie Technology Co., Ltd.
Long Cycle Life and Stable Voltage Output
Compatible Laptop Models
Lenovo Thinkpad S440 S3-S431 V4400U
Compatible Part Numbers
45N1140 45N1141 45N1138 45N1139
Usage & Maintenance Tips
Use only the original Lenovo adapter for charging.
Avoid high-temperature or humid environments during use.
Charge fully before first use for optimal battery performance.
Store at around 50% charge if not used for long periods.
