Description
Product Overview
This ASUS B31N1503 48Wh battery is a genuine replacement power source designed specifically for compatible ASUS laptop models. Manufactured to meet original specifications, it ensures reliable performance and safety.
Specifications
- Battery Type: Lithium-ion
- Capacity: 48Wh
- Voltage: 14.8V
- Condition: Brand New
- Warranty: 1 Year
Compatibility Information
Compatible Part Numbers (P/N)
- B31N1503
- 0B200-01690000
- B31NnC3
Compatible Models
- ASUS E202SA
- ASUS L202SA
Note: The compatibility list above is not exhaustive. If you don’t see your specific model or part number listed, please leave your laptop model or battery part number in the order notes during checkout, and we will verify compatibility for you.
When to Replace Your Laptop Battery
Here are common indicators that your ASUS laptop battery may need replacement:
| Symptom | Description |
|---|---|
| Short Battery Life | Battery drains quickly even after full charge, lasting less than 1-2 hours |
| Swelling/Bulging | Battery case appears swollen or distorted |
| Charging Issues | Battery won’t charge fully or charges intermittently |
| Unexpected Shutdowns | Laptop turns off suddenly even with charge remaining |
| Age Indicator | Battery is over 2-3 years old with noticeable performance decline |
| System Warnings | OS displays “Replace Battery” or similar warnings |
Estimated Battery Life by Usage
Based on 48Wh capacity, here are conservative estimates for different usage scenarios:
| Usage Scenario | Estimated Runtime |
|---|---|
| Web Browsing & Email | 4-6 hours |
| Document Editing | 5-7 hours |
| Video Streaming | 3-5 hours |
| Gaming | 1.5-3 hours |
| Idle/Standby | 8-12 hours |
Important Note: New batteries used with older laptops may provide shorter runtime compared to when the laptop was new. This is normal due to increased software demands and natural hardware aging affecting overall power efficiency.
Shipping & Warranty
- Ships within 1 business day
- 30-day money back guarantee
- 1-year manufacturer warranty
- Free shipping
- In stock – ready to ship





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