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Battery Model: C21N1634
Battery Type: Li-ion
Cell:2 Cells ,made in China,high quality guarantee
Condition:Replacement Battery (100% Brand New,2 years warranty!)
Replace Part Numbers:
Compatible Laptop Models:
For ASUS VivoBook R542U R542UR X542U FL5900L FL8000L Series
For ASUS VivoBook 15 A580U X580U X580B Series
KingSener Brand, leading a new era of technology.
KingSener as a well-know- brand . Our company have more than 10 year experience and specializes in supplying premium quality laptop batteries and other 3C electronic product for global customers We also can provide or produces customized products (OEM/ODM) as per buyers requirements.
Welcome to contact us if you need wholesale service.
Make every product seriously:All our products pass CE/FCC/ROHS/EN62133/IEC62133/MSDS testing certifications.
We have transactions in more than 80 countries and regions such as Russian Federation/Brazil/France/Spain/Israel/South Korea/USA/Singapore/Thailand/Chile.
(1)ltems are Usually shipped out within 2 business days after payment was confirmed by BatteryMall.
(2)All parcels will be shipped out via registered mail with tracking number.
(3)Please make sure to provide full address including full name,address detail, phone number , zip code ,so that the package can be delivered successfully.
About Delivery Time：
(1)If ship from China, it normally takes 20-30 working days to arrive. But the delivery time depends on weather, holiday, locally shipping situation and customs clearance factors in destination country.
(2)If ship from French warehouse, the normal delivery time was 5 to 20 working days.
(3)If ship from US warehouse, the normal delivery time was 5 to 20 working days.
We support paypal, Stripe, Visa, Mastercard, American Express payment methods.
If there is a problem with your payment, please give us feedback.
Our battery price is the product price plus shipping cost, not including VAT.
If your country needs to pay VAT, you need to declare and pay the tax by yourself.
1.Q: How about the battery’s lasting or working time ?
A: Actually battery’s run-time is dependent on the device's total power consumption rate.
It related to following factors:
●the speed of the laptop’s processor
●the amount of application software
●the number of wireless interface devices
●the brightness of the screen
●the amount of cycle that you’re using it for
2.Q:How to maintain battery life?
A:We suggest that you do the battery activation at least once every two months, as it will extend the working time and life of your battery. If you won’t the battery for a month or longer, we suggest you charge the battery to 50%-80% capacity and then remove it from the laptop. Store it in a clean, dry place until you need it again.
3.Q:How long is the battery life？
A:Our battery was tested and checked well before shipment. Under the normal using condition,the life of the lithium battery is about 500 time of cycles, so that usually as far as possible to use the fast end (5-7%) in charge, the average use time is 2 to 3 years.
Warranty & Service
48 Hours order Processing Time ( Except holiday)
Full 1 Years Warranty/Fast Shipping/12 Hours Quick Response
Thank you for your trust in us, if you are satisfied with our products, please recommend our store to your friends and relatives.Please contact our after-sales team If you are not satisfied with a product or meet any problem .We will give the best warranty service and technical help.
If you have any question,feel free to contact us:Whatsapp/Wechat/Telephone:+86 19867751872 or email:firstname.lastname@example.org
About Shipment:(1)ltems are usually shipped out within 5 business days after payment was confirmed.
(2) All items will be shipped out via POST MAIL, such as CHINA POST HOLAND POST or other special line Mail. Each order will have a tracking number to track the shipping status.
(3) Please make sure to provide complete and right address including full name,address detail, phone number , zip code , so that the post office can delivered package to you efficiently and successfully.
(4) We are not responsible for buyer import custom duties and related taxes.Shipping costs are paid by the buyer.
You can check your express shipping status with this:
About Delivery Time：(1)If ship from the French warehouse, the normal delivery time is 5-10 working days.
(2) If ship from China:
it normally takes 30-40 working days to Europe/North America/South America.
it normally takes 5-10 working days to Korea/Singapore/Thailand/Malaysia.
it normally takes 20-30 working days to Japan/Philippines.
If you want to know the specific shipping time in your country, please contact us.
But the delivery time depends on weather,holiday,locally shipping situation and customs clearance factors in destination country.
Please contact us by email or by message if you require to ship via Express shipping methods such as TNT /UP2. /FEDEX /EMS.