Description
Product Overview
This ASUS C42-UX51 70Wh replacement battery is specifically designed to restore your laptop’s original performance and mobility.
Specifications
- Battery Part Number: C42-UX51
- Capacity: 70Wh
- Condition: Brand New
- Voltage: 11.4V
- Chemistry: Li-ion
Compatibility
Part Numbers (P/N)
- C42-UX51
Models
- Asus ZenBook U500
- Asus ZenBook U500V
- Asus Zenbook U500VZ
- Asus Zenbook UX51
- Asus Zenbook UX51V
- Asus Zenbook UX51VZ
Note: Compatibility list is not exhaustive. If you don’t see your specific model or part number listed, please leave your laptop model or current battery part number in the order notes during checkout. We will verify compatibility before shipping.
When to Replace Your Battery
Here are common indicators that your laptop battery may need replacement:
| Symptom | Description |
|---|---|
| Short Runtime | Battery drains significantly faster than original capacity, lasting less than 1-2 hours with normal use |
| Swelling/Bulging | Battery case appears swollen or distorted, creating gap between battery and laptop |
| Charging Issues | Battery won’t charge fully, charges very slowly, or doesn’t hold charge |
| System Warnings | Laptop displays “Consider replacing your battery” or similar system alerts |
| Age | Battery is 2-3 years old with noticeable performance degradation |
| Random Shutdowns | Laptop shuts down unexpectedly even when battery indicator shows charge remaining |
Estimated Battery Life
Based on 70Wh capacity with conservative estimates:
| Usage Scenario | Estimated Runtime |
|---|---|
| Web Browsing & Email | 4-5 hours |
| Document Editing | 5-6 hours |
| Video Streaming | 3-4 hours |
| Gaming | 1.5-2.5 hours |
| Mixed Use | 4-5 hours |
| Standby/Sleep | Multiple days |
Important Note: These are conservative estimates for a new battery used with older hardware. Actual runtime may be shorter than when your laptop was new due to increased power demands from software updates, hardware aging, and background processes.
Purchase Benefits
- Same Day Shipping (Order by 3PM)
- 30-Day Money Back Guarantee
- 1-Year Manufacturer Warranty
- Free Shipping
- In Stock – Ready to Ship
- 100% Brand New
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