ASUS C21N1818 Laptop Batteries 7.7V 37Wh

Compatible Part Numbers:

• C21N1818
• B21N1818
• B21N1818-2
• B21N1818-1

Compatible Model Numbers:

B21N1818 Battery for Asus VivoBook 14 A412FA X412UA X412FJ 14 R424FA

7.7V 37Wh C21N1818 Battery for ASUS VivoBook F412DA 14" Series

37Wh C21N1818-2 0B200-03280500 battery for ASUS A412D A412DA A412DK A412F
Note : I don't know how to buy the right battery, press "Ctrl + F" on the keyboard, enter N1818 to search, carefully check the appearance of the battery and the buckle, so that I can buy the right battery!
For ASUS:
P1402FA, P1402UA, P1402UB, Pro 14 R424FA
A412D A412DA A412DK A412F A412FA A416J A416JA A516E A516J A516JA A516M A516MA
D415D D415DA D415U D415UA D515D D515DA D515U D515UA
E415D E415DA
F412D F412DA F412DK F412F F412FA F412U F412UA F415E F415EA F415F F415FA F415J F415JA F415M F415MA F515J F515JA F515JP F515M F515MA
M415D M415DA M415U M415UA M515D M515DA M515U M515UA
P1400CE P1400CJ P1400CM P1411CJ P1412CE P1500CE P1500CJ P1500CM P1511CD P1511CE P1511CJ P1512CE P1550CD
R415D R415DA R415E R415EA R415F R415FA R415J R415JA R415U R415UA R424D R424DA R424F R424FA R465E R465EA R515D R515DA R515E R515EA R515F R515FA R515J R515JA R565E R565EA R565J R565JA R565M R565MA
S412D S412DA S412DK S412F S412FA S412FJ S412U S412UA S415D S415DA S415E S415EA S415J S415JA S416J S416JA S465J S465JA S505J S505JA S509J S509JA S515D S515DA S515E S515EA S515J S515JA S515U S515UA
X412D X412DA X412DK X412F X412FA X412FJ X412FL X412U X412UA X412UB X412UF X415 X415D X415DA X415E X415EA X415EAN X415EP X415F X415FA X415J X415JA X415JF X415JP X415K X415KA X415M X415MA X415MN X415MNS X415UA X515 X515D X515DA X515E X515EA X515EAN X515EP X515F X515FA X515J X515JA X515JAN X515JF X515JP X515K X515KA X515M X515MA X515U X515UA
Y1511CD

After Sales Service

We operate a fair and open after-sales service. Over 99% of our orders are handled perfectly – goods are delivered on time and work without fault. We aim to offer a service most other online retailers fail to deliver on: Product availability, value, reliable delivery and a clear and fair after-sales service.

1-Year Warranty
All our high quality replacement batteries for ASUS C21N1818 come with a 1-year warranty. Warranty is applicable if the buyer has installed the battery properly in the device and has treated the battery correctly.

30-Day Money Back Guarantee
Our goal is to turn customer satisfaction into ‘Complete Customer Satisfaction’. That's why we offer you a 30-day money back guarantee, on top of our warranty and RMA procedure for defects!
Please note: in order to qualify to get your money back, you must first contact us and await instructions before sending back your product.

Our Guarantee

* Shopping with us is safe and secure.
* 100% High Quality and low price.
* 100% compatible original equipment.
* Full 1 year warranty! 30 days money back !
* Quick delivery for every order. 

Payment Methods

How to Maximize Your Laptop’s Battery Life?

• 1. Defrag your computer regularly. This will allow your hard drive to not work as hard which won't drain your battery more.
• 2. Lower the brightnest of your screen. The brighter your screen, the more power being used.
• 3. Try to keep the amount of programs to a minimum. Every program open helps drain the battery a little bit more.
• 4. Cut down on external devices, such as USB devices, like a mouse. Also WiFi will drain your battery so turn it off when you aren't using it to save power.
• 5. Clean the Battery contacts. Every 6 months are so you should take out your battery and clean the contacts that connect to the laptop. You can use a cloth with rubbing alcohol to achieve this.
• 6. If you ever put your computer on standy, you should try to switch to hibernate, as hibernate fully shuts down your computer, but it allows you to quickly resume your work when you turn it back on.
• 7. Go to "Power Options" on your laptop and change it's setting to Max Battery, Super Energy Saver, or one of the other many different forms of it. But it all means the same thing, switch to the setting that is set for saving the most amount of energy.