C21N1819 Replacement Battery Specification
- Battery Model: C21N1819
- Capacity: 4940mAh / 38WH
- Voltage: 7.7V
- Battery Type: Li-ion
- Cell: Made in China, high quality guarantee
- Color: Black
- Condition: Replacement Battery (100% Brand New, 1-year warranty!)
Replace Part Numbers
- C21N1819
- C21N1819-1
- 0B200-03200000
- 2ICP4/59/134
Compatible Laptop Models
- Asus VivoBook 14 F420FA Series
- Asus VivoBook 14 F420UA Series
- Asus VivoBook 14 S420UA Series
- Asus VivoBook 14 R459UA Series
- Asus VivoBook 14 X420F Series
- Asus VivoBook 14 X420U Series
- Asus VivoBook 14 X420FA Series
- Asus VivoBook 14 X420UA Series
- Asus VivoBook A420UA Series
- Asus VivoBook R420UA Series
- Asus VivoBook P1411FA Series
- Asus VivoBook Y406F Series
- Asus VivoBook Y406FA Series
- Asus VivoBook Y406FA8265 Series
- Asus VivoBook Y406U Series
- Asus VivoBook Y406UA Series
- Asus VivoBook Y406UA8250 Series
Product Features
- Reliable Performance: 38WH capacity delivers dependable power for ASUS Vivobook 14 laptops, perfect for students and professionals who need all-day productivity and portability.
- OEM-Grade Quality: Manufactured with premium lithium-ion cells to meet or exceed original ASUS specifications for reliable daily use and long-term performance.
- Wide Compatibility: Designed specifically for ASUS Vivobook 14 F420FA, F420UA, and S420UA models, ensuring perfect fit and optimal performance.
- Premium Li-ion Technology: Advanced lithium-ion cells deliver stable voltage output, efficient charging cycles, and longer battery lifespan with support for hundreds of charge cycles.
- Easy Installation: Direct drop-in replacement for original ASUS battery with simple plug-and-play design, no technical expertise required for battery swap.
- Comprehensive Safety: Built-in protection circuitry guards against overcharge, over-discharge, short-circuit, and overheating to ensure safe operation and protect your laptop.
Why Choose This Battery?
This C21N1819 replacement battery is the perfect power solution for students, professionals, and mobile workers using ASUS Vivobook 14 laptops. With 38WH capacity and 7.7V output, it delivers dependable power for all-day productivity, remote work, online learning, and entertainment, keeping your laptop running when you need it most.
Compatible with ASUS Vivobook 14 F420FA, F420UA, and S420UA models, this battery is backed by a 1-year warranty and rigorous quality testing. Perfect for students, remote workers, and everyday users who need reliable backup power for their ASUS Vivobook laptops.
Restore your laptop's portability and productivity with this affordable, high-quality replacement battery that delivers the power you need for work, study, and entertainment on the go.
Note:
This is not a complete list or inclusion of all compatible laptop models. You can open the back of your laptop to check the original battery model. If you have any compatibility questions, please contact us online.The casing is made of durable materials, the mainboard adopts advanced technology, and the battery core is produced with high-quality raw materials to ensure that it will not be damaged after long-term use.
Our products are equipped with multiple protection technologies such as overvoltage, overcurrent, and overcharge to effectively protect the safety of batteries and equipment.
Shipping Methods
| Shipping Methods | Ship To | Est. Delivery Time | Shipping Cost | Taxes & Fees |
|---|---|---|---|---|
| USPS / DHL | United States | 10-15 business days | Free | Free |
| Canada Post | Canada | 10-15 business days | Free | Free |
| Royal Mail / Yodel | United Kingdom | 15-20 business days | Free | Free |
| DHL | Germany | 15-20 business days | Free | Free |
| La Poste | France | 15-20 business days | Free | Free |
| Correios | Mexico/Spain/IT | 15-25 business days | Free | Free |
| Local Carriers | SE Asia / East Asia | 5-10 business days | Free | Free |
| Local Carriers | Rest of Europe | 20-25 business days | From $5.99 | Free |
| Local Carriers | UAE / Saudi Arabia / Israel | 16-20 business days | From $7.99 | Free |
📦 Shipping & Tracking Information
Looking for faster shipping? We offer local warehousing services. Please visit our "Local Delivery" page for items available for immediate dispatch.
1. How to Track Your Package:
Please choose the tracking link that corresponds to your destination:
- Europe & The Americas: 17track.net/en
- The Middle East: mena56.com
- Asia: 17exp.kingtrans.cn
Need Help?
If you cannot find your package on any of the above websites, please contact us immediately.
📧 Email: sales@batterymall.com / info@batterymall.com
📱 WeChat/WhatsApp: (+86) 198 6775 1872 / (+86) 191 2767 3310
🚚 Estimated Delivery Time
(1) Shipping from China:
- To Asia: 5-20 business days
- To North America: 10-15 business days
- To Europe/South America: 15-20 business days
(2) Shipping from Local Warehouses:
- From US Warehouse: 3-5 business days
- From European Warehouse: 2-10 business days
- From Russian Warehouse: 3-5 business days
Please note: Exact arrival times depend on the specific country and customs processing.
⚠️ Tax & Customs Information:
Global product prices include customs duties (some countries require a tax ID). Please refer to the settlement invoice for specific shipping costs. Special handling is required if your package is inspected.
Payment Methods
Paypal
Payments by PayPal, no PayPal account required. Paypal is safe and free for buyers.
PayPal account: Payment@batterymall.com
Account Name: ShenZhen KingSener Science and Technology Co., Ltd
Credit or debit card
VISA, MasterCard, the United States n Express,Maestro & Laser Card, APPLE Pay,etc.
PayPal never shares your financial information with us.
WeChat Pay
Currently only supports QR code payment. Please contact WeChat customer service and go to WeChat App to scan the QR code to complete the payment.
Google Pay
Pay with Google Pay, which is more convenient and faster.
Apple Pay
If you use an Apple device, you can use Apple Pay to pay, which is more convenient and faster.
Bank Transfer
Q&A
Quick FAQ:Laptop Battery Care & Troubleshooting
- How long does a KingSener battery last?2 to 3 years (approx. 500-800 charge cycles) under normal temperatures.
- Laptop says "Battery Not Detected". How to fix?1. Hard Reset: Unplug AC, remove battery, hold power button for 30 seconds.
2. Clean Contacts: Wipe metal connection pins.
3. Reset Drivers: Uninstall battery drivers in Device Manager, then restart.
4. Update BIOS: Ensure motherboard firmware is up to date. - Can I leave my laptop plugged in 24/7?Yes, the built-in TI chip prevents overcharging. Tip: To prevent long-term cell swelling, unplug and drain the battery to 40% twice a month.
- How do I store a laptop battery long-term?Store it at 50% charge in a cool, dry place. Never store at 0% or 100%. Cycle the battery every 3 months to maintain chemical activity.
-
Are KingSener batteries safe?Yes. All batteries feature built-in IC protection against short-circuits, over-voltage, and overheating. Fully CE, FCC, and RoHS certified.