Description
Product Overview
This ASUS C21N1603 39Wh battery is a genuine replacement part designed specifically for compatible ASUS devices. Manufactured to meet original specifications, it ensures reliable performance and safety.
Specifications
- Battery Type: Lithium-ion
- Capacity: 39Wh
- Voltage: 7.6V
- Condition: Brand new
- Part Number: C21N1603
Compatibility Information
Part Numbers (P/N)
- 0B200-02100100
- C21PqJ5
- C21N1603
Device Models
- Transformer 3 Pro T303U
- Transformer 3 Pro T303UA
- T303UA
Note: This list represents common compatible models. If your specific device or battery part number isn’t listed, please leave it in the order notes and we’ll verify compatibility before shipping.
When to Consider Battery Replacement
| Symptom | Description |
|---|---|
| Short Runtime | Battery drains significantly faster than original capacity, lasting less than 2 hours under normal use |
| Swelling/Bulging | Battery case appears swollen or distorted, indicating potential safety hazard |
| Charging Issues | Battery won’t hold charge, charges intermittently, or device shuts down when unplugged |
| System Warnings | OS displays “Replace Battery” or “Service Battery” messages |
| Age | Battery is over 2-3 years old with noticeable performance degradation |
Estimated Battery Life by Usage
| Usage Scenario | Estimated Duration |
|---|---|
| Web Browsing | 3-4 hours |
| Document Editing | 4-5 hours |
| Video Playback | 2.5-3.5 hours |
| Light Gaming | 1.5-2.5 hours |
| Standby/Sleep | Multiple days |
Note: These are conservative estimates for a new battery in used hardware. Actual runtime may be shorter than original performance due to increased software demands and aging device components.
Purchase Benefits
- Same-day shipping on business days
- 30-day money-back guarantee
- 1-year warranty coverage
- In-stock ready to ship
- Brand new genuine product
- Free shipping included
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