Overview
The B31N1912 is a Li-Polymer replacement battery for the ASUS VivoBook E410KA-EK139TS laptop, rated 11.55V and delivering 42Wh of capacity. It is a direct replacement for the original B31N1912 pack used across the ASUS VivoBook 14 series, so it restores reliable, long-lasting runtime without modification. Ships 100% brand new with a 1-year warranty.
Specs
| Standard Model: | B31N1912 |
| Voltage: | 11.55V |
| Capacity: | 42Wh |
| Battery Type: | Li-Polymer |
| Color: | Black |
| Certification: | CE, FCC, RoHS compliant |
| Condition: | Brand New (100% New, 1-year warranty) |
Parts
- B31N1912
- C31N1912
- 0B200-03680200
- 0B200-03680000
Models
- ASUS VivoBook 14 E410MA Series
- ASUS VivoBook 14 L410MA Series
- ASUS VivoBook E410KA-EK139TS Series
- ASUS VivoBook E510KA-EJ033TS Series
- ASUS VivoBook E510MA-EJ015TS Series
- ASUS VivoBook F414MA Series
- ASUS VivoBook L510MA Series
- ASUS VivoBook R522MA Series
- ASUS VivoBook E510M Series
- ASUS VivoBook E510MA Series
FAQ
Which Asus VivoBook models does this B31N1912 battery fit?
It fits the Asus VivoBook E410KA-EK139TS covered here, and it is also compatible with the wider Asus VivoBook 14 series listed above.
What are the specifications of the B31N1912 battery?
The B31N1912 is rated 11.55V with a 42Wh capacity in Li-Polymer chemistry, matching the original Asus specification for the VivoBook 14 series.
Is this a brand-new replacement battery?
Yes. It is a 100% brand new replacement battery supplied with a 1-year warranty, and it installs as a direct drop-in fit for the Asus VivoBook 14 series.
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.High Quality Garanteed
Our battery products are manufactured using high-quality materials and advanced technology to ensure stability and reliability.
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.
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.
China warehouse delivery method
Shipping Methods
Ship To
Est. Delivery Time
Shipping Cost
Taxes & Fees
USPS
United States(No AK/HI, PR/GU, PO Boxes, or APO/FPO)
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
Local Carriers
Germany/Netherlands/Norway
15-20 business days
Free
Free
La Poste
France
15-20 business days
Free
Free
Local Carriers
Australia/New Zealand
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
Overseas Warehouse Shipping Times & Costs
Shipping Methods
Ship To
Est. Delivery
Shipping Cost
Taxes & Fees
US Warehouse
United States
3-7 business days
Free
Free
European Warehouse
EU countries
5-7 business days
€0 – €5.99
pricing varies by country
Free
UK Warehouse
United Kingdom
3-7 business days
Free
Free
Canada Warehouse
Canada
5-7 business days
Free
Free
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
If you cannot use the above payment methods and the order amount exceeds HK$2000, please contact our customer service to obtain your bank account and pay via 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.