Description
Product Overview
This genuine Dell WY9DX 42Wh battery is designed as a direct replacement for your original battery. It delivers reliable power and performance for compatible Dell laptops.
Specifications
- Part Number: WY9DX
- Capacity: 42Wh
- Condition: Brand New
- Chemistry: Lithium-Ion
Compatibility Information
Compatible Part Numbers (P/N)
- 0M3KCN
- 0R89GC
- 0WY9DX
- M3KCN
- R89GC
- WY9DX
Compatible Models
- Dell Latitude 14 (5420 series)
- Dell Latitude 15 (5520 series)
- Dell Precision 15 (3560 series)
Note: Compatibility extends to many more part numbers and models than listed here. If you’re unsure about compatibility, please leave your specific laptop model or current battery part number in the order notes during checkout, and we will verify compatibility for you.
When to Consider Battery Replacement
Here are common indicators that your laptop battery may need replacement:
| Symptom | Description |
|---|---|
| Short Battery Life | Battery drains significantly faster than when new, lasting only 1-2 hours with normal use |
| Swelling/Bulging | Battery case appears swollen or distorted, which is a safety hazard |
| Failure to Charge | Battery won’t charge fully or charging process stops intermittently |
| Unexpected Shutdowns | Laptop turns off suddenly even when battery indicator shows charge remaining |
| Battery Not Detected | System fails to recognize the battery, requiring AC power to operate |
| Age Over 2 Years | Most lithium-ion batteries show significant degradation after 2-3 years of regular use |
Estimated Battery Life by Usage
Conservative estimates for Dell WY9DX 42Wh battery performance:
| Usage Scenario | Estimated Runtime |
|---|---|
| Web Browsing & Email | 3-5 hours |
| Word Processing & Office Apps | 4-6 hours |
| Video Streaming | 2.5-4 hours |
| Gaming | 1.5-2.5 hours |
| Standby/Sleep Mode | 24-48 hours |
Important Note: These are conservative estimates for replacement batteries. When using a new battery with older hardware and software, expect shorter runtime compared to when your laptop was brand new due to increased power demands from aging components and modern software.
Purchase Benefits
- Same Day Shipping (Order by 3PM)
- 30-Day Money Back Guarantee
- 1-Year Manufacturer Warranty
- In Stock – Ready to Ship
- Free Shipping
- Brand New – Never Used
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