Description
Product Overview
This ASUS C21N1421 38Wh battery is a genuine replacement part designed specifically for compatible ASUS Transformer Book models. Manufactured to meet original specifications for reliable performance.
Specifications
- Battery Capacity: 38Wh
- Part Number: C21N1421
- Chemistry: Lithium-ion
- Condition: Brand new, factory fresh
Compatible Part Numbers
- 0B200-01520000
- C21N1421
Compatible Models
- ASUS Transformer Book T300CHI
- ASUS Transformer Book T302CA
- ASUS Transformer Book T302CHI
Compatibility Note
Many compatible part numbers and models exist beyond those listed. If you’re unsure about compatibility, please leave your specific model number or current battery part number in the order notes during checkout. We’ll verify compatibility before shipping.
When to Replace Your Battery
| Situation | Description |
|---|---|
| Short Runtime | Battery drains significantly faster than original capacity, lasting less than 2 hours with normal use |
| Swelling/Bulging | Battery case appears swollen or causes device casing to separate |
| Charging Issues | Battery won’t hold charge, charges intermittently, or requires specific positioning to charge |
| System Warnings | OS displays “Replace Soon” or “Service Battery” warnings repeatedly |
| Unexpected Shutdowns | Device shuts down suddenly even when battery indicator shows remaining charge |
| Age Factor | Battery is over 2-3 years old with noticeable performance degradation |
Estimated Battery Life
| Usage Scenario | Estimated Duration |
|---|---|
| Web Browsing | 3-4 hours |
| Document Editing | 4-5 hours |
| Video Streaming | 2.5-3.5 hours |
| Light Gaming | 1.5-2.5 hours |
| Standby/Idle | 6-8 hours |
Note: These estimates are conservative. New batteries in older devices typically provide shorter runtime compared to when the device was new, due to increased software demands and hardware aging.
Shipping & Warranty
- Ships in 1 business day
- 30-day money back guarantee
- 1-year warranty
- Free shipping
- In stock, ready to ship
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