Description
Product Overview
This genuine Lenovo 45N115157 57Wh battery is a direct replacement for your original laptop battery. It’s brand new, ships within one business day with free shipping, and comes with our 30-day refund policy and 1-year warranty.
Specifications
- Part Number: 45N115157
- Capacity: 57Wh
- Chemistry: Lithium-ion
- Condition: Brand New
- Stock Status: In Stock
Compatible Part Numbers (P/N)
This battery replaces the following Lenovo part numbers:
- 0C52863, 0C52864
- 45N1144, 45N1145, 45N1146, 45N1147, 45N1148, 45N1149
- 45N1150, 45N1152, 45N1153, 45N1158, 45N1159, 45N1160
- 45N1161, 45N1163, 45N1769, 45N1771, 45N1779
- 5B10W13948, 5B10W13949
Compatible Models
Designed for these Lenovo ThinkPad models:
- ThinkPad L440 (including 20AS, 20AT variants)
- ThinkPad L540 (20AU/20AV)
- ThinkPad T440p (20AN/20AW, 78995)
- ThinkPad T540 (20BE, 20BF/20BE)
- ThinkPad T540p (20BF/20BE)
- ThinkPad W540 (20BG/20BH)
- ThinkPad W541 (20EF/20EG)
- Lenovo 57, 57+, 57++
Need Help Finding Your Model?
We’ve listed the most common compatible part numbers and models above, but there are many more compatible variants. If you don’t see your specific model or part number listed, please leave it in the order notes during checkout. We’ll verify compatibility before shipping.
When Should You Replace Your Battery?
Here are common signs indicating it’s time for a new battery:
| 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 |
| Not Charging | Battery won’t charge despite using correct charger and power source |
| System Shutdowns | Laptop suddenly powers off even when battery indicator shows charge remaining |
| OS Warnings | Windows or Lenovo Vantage shows “Consider replacing your battery” messages |
| Age | Battery is 2-3 years old with noticeable performance degradation |
Estimated Battery Life
Conservative estimates for the 57Wh battery under normal usage conditions:
| Usage Scenario | Estimated Runtime |
|---|---|
| Web Browsing & Email | 4-6 hours |
| Word Processing | 5-7 hours |
| Video Streaming | 3-4 hours |
| Gaming | 1.5-2.5 hours |
| Standby/Sleep | 24-48 hours |
Note: These are conservative estimates for replacement batteries. When using a new battery with older hardware, expect shorter runtime compared to when your laptop was new due to increased software demands and natural hardware aging.
Purchase Protection
- 30-Day Money Back Guarantee
- 1-Year Manufacturer Warranty
- Brand New Genuine Product
- Free Shipping
- Ships Within 1 Business Day
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