Description
Product Overview
This is a genuine replacement Asus B21N1818-1 32Wh laptop battery. It is a brand new, high-quality battery designed to restore your laptop’s mobility and performance.
Specifications
- Part Number: B21N1818-1
- Voltage: 11.4V
- Capacity: 32Wh
- Chemistry: Li-ion
- Condition: Brand New
Compatibility Information
This battery is a direct replacement for the following part numbers and laptop models.
Compatible Part Numbers (P/N)
- 0B200-03450000
- 0B200-03450100
- 0B200-03450200
- 0B200-03450400
- 0B200-03450500
- B21N1818-2
- B21N1818-3
Compatible Laptop Models (Model)
- Asus D409DA Series (e.g., D409DA-EK005T)
- Asus ExpertBook P1 Series (e.g., P1410CDA, P1501DA, P1510CDA, P1510CJA)
- Asus ExpertBook P1410CJA
- Asus F509JA-BQ869
- Asus Vivobook 14 Series (e.g., F409, X409, R427)
- Asus VivoBook 15 Series (e.g., D509, F509, M509, X509, X545)
- Asus VivoBook S15 X545FB
Unsure About Compatibility?
The list of compatible part numbers and models is extensive. If your specific model or battery part number is not listed, please leave it in the order notes during checkout. We will verify compatibility for you before shipping.
When Should You Replace Your Laptop Battery?
Consider replacing your battery if you notice any of the following signs. This table helps identify common symptoms of a failing battery.
| Symptom | Description |
|---|---|
| Short Battery Life | The laptop powers off after only a short time unplugged, even after a full charge. |
| Battery Won’t Charge | The battery percentage does not increase when the charger is plugged in. |
| Swelling/Bulging | The battery pack is physically swollen or deformed. Discontinue use immediately. |
| System Errors | Your OS frequently shows “plugged in, not charging” or “consider replacing your battery” warnings. |
| Inconsistent Charge | The reported charge level jumps significantly or the laptop shuts down unexpectedly despite showing remaining charge. |
Estimated Battery Life
Based on the 32Wh capacity, here are conservative estimates for different usage scenarios. Actual results will vary based on your laptop’s age, settings, and applications.
| Usage Scenario | Estimated Runtime |
|---|---|
| Web Browsing / Office Applications | 3 – 5 hours |
| Video Playback | 2.5 – 4 hours |
| Light Gaming | 1 – 2 hours |
| Idle / Low-Power Mode | 5 – 7 hours |
Important Note: A new battery used with older hardware and modern software will generally not last as long as the original battery did when the laptop was brand new due to increased power demands from the operating system and natural hardware aging.
Purchase With Confidence
- ✔️ 1-Year Warranty
- ✔️ 30-Day Money-Back Guarantee
- ✔️ Ships in 1 Business Day
- ✔️ In Stock, Ready to Ship
- ✔️ Free Shipping
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