Description
Product Overview
This genuine Lenovo 45N1138 46Wh battery is designed as a direct replacement for your original laptop battery. Manufactured to meet strict quality standards, it ensures reliable performance and safety.
Specifications
- Battery Type: Lithium Ion
- Capacity: 46Wh
- Voltage: 10.8V
- Condition: Brand New
- Part Number: 45N1138
Compatibility Information
Part Numbers (P/N)
- 121500158
- 121500159
- 45N1139
- 45N1140
- 45N1141
Models
- ThinkPad S431
- ThinkPad S440
- ThinkPad S440 (20AY)
- ThinkPad S440 Touch (20AY/20BB)
- ThinkPad T440S
- ThinkPad X230S
- ThinkPad X240S
Note: This list represents common compatible models and part numbers. Many additional compatible models exist. If you’re unsure about compatibility, please leave your specific laptop model or current battery part number in the order notes, and we’ll verify before shipping.
When to Replace Your Battery
Consider replacing your laptop battery if you notice any of these common signs of battery degradation:
| Symptom | Description |
|---|---|
| Short Runtime | Battery drains significantly faster than when new, even after full charge |
| Swelling/Bulging | Battery case appears swollen or distorted – replace immediately for safety |
| Charging Issues | Battery won’t hold charge or charges intermittently |
| System Warnings | Laptop displays “Replace Battery” or similar warnings |
| Unexpected Shutdowns | Computer turns off suddenly even with charge indicator showing power remaining |
| Age Factor | Battery is 2-3 years old with noticeable performance decline |
Estimated Battery Life
Based on 46Wh capacity under normal usage conditions (screen brightness 50%, balanced power mode):
| Usage Scenario | Estimated Runtime |
|---|---|
| Web Browsing & Email | 4-5 hours |
| Document Editing | 5-6 hours |
| Video Streaming | 3-4 hours |
| Light Gaming | 2-3 hours |
| Standby/Sleep Mode | Multiple days |
Important Note: These are conservative estimates for a new battery used with older hardware. Due to increased power demands from modern software and natural hardware aging, runtime may be shorter compared to when your laptop was new.
Purchase Benefits
- Same Day Shipping (Order by 2PM)
- 30-Day Money Back Guarantee
- 1-Year Manufacturer Warranty
- In Stock – Ready to Ship
- Brand New – Never Used
- Free Shipping Included
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