Asus B21N1818-2 Replacement Battery

ASUS B21N1818-2 Battery Compatibility

Replacement Part Numbers:

Compatible Models：

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

* Please make sure that the replacement battery you are buying is suitable for your device brand and model.

How to confirm your battery model?

Check the model number printed on your original battery label.
Match the battery model with the compatibility list shown on this page.
Verify your exact model name/number in the device settings or on the back cover.
Ensure the voltage and connector type are the same as your original battery.
If you are unsure, feel free to contact us with your device model for confirmation.

Installation notes

Ensure your device model matches the battery label before purchase.
Installation is straightforward and requires no special tools.
Use only compatible ASUS chargers or certified accessories.
Follow standard safety procedures when replacing the battery.

Our Guarantee for ASUS B21N1818-2 Battery

Brand‑new replacement battery for reliable daily performance.
Tested for stable output and consistent power delivery.
Designed for long cycle life and dependable usage.
Secure packaging and safe delivery to Singapore.
12‑month warranty with 30‑day return policy.
100% compatible Asus VivoBook 14 A412FA X412UA X412FJ 14 R424FA, ASUS VivoBook F412DA 14inch Series, ASUS A412D A412DA A412DK A412F

Product Features:

✅ 100% compatible with original equipment — easy installation and stable performance.

✅ Built-in overvoltage protection circuit to prevent damage to your device.

✅ Strictly tested during production to ensure top performance and reliability.

✅ Perfect replacement for the original part — same fit, same function.

Why Do ASUS B21N1818-2 Laptop Batteries Deteriorate?

ASUS laptops feature lithium-ion batteries renowned for their efficiency and long-lasting power. Over time, repeated charging and discharging cycles gradually reduce their ability to hold a charge. This decline is influenced by factors such as frequent charging, heat exposure, and usage intensity, all of which contribute to the natural reduction in battery performance.

Laptop Battery FAQs

Is this battery compatible with my laptop?
Please check the battery model number on your original battery or confirm your laptop’s exact model. Compatibility must match the list shown on this page.
Is the battery brand‑new and safe to use?
Yes, all batteries are brand‑new and include overcharge, short‑circuit, and temperature protection.
Do I need a technician to install the battery?
For internal batteries, professional installation is recommended. Improper installation may damage the device.
Will I receive a tracking number?
Yes, a tracking number will be emailed to you the day after your order is shipped.
Why does my laptop drain quickly after installing a new battery?
A new battery may require several charge cycles to reach optimal performance.
What if the battery doesn’t fit or is incompatible?
Please contact us with your laptop model. If incompatible, you may return it within 30 days.

View more battery specifications & guide For ASUS B21N1818-2

ASUS B21N1818-2 Battery Technical Specifications
Model	B21N1818-2
Battery Condition	Brand New Replacement Battery
Item Code	ASU23MA1618_A
Category	Laptop Batteries
Brand	ASUS
Capacity	37Wh
Voltage	7.7V
Type	Rechargeable Li-ion
Color	Black
Applies to	Asus VivoBook 14 A412FA X412UA X412FJ 14 R424FA, ASUS VivoBook F412DA 14inch Series, ASUS A412D A412DA A412DK A412F
Certification	Passed CE, UL, ROHS, ISO 9001/9002 and GS certification
Service	Buy now, we promise a one-year warranty and 30-day returns

Why order batteries from us?

① Expert in the field of batteries for 15 years.

② Large selection, almost all available products are in stock.

③ Tested and checked by competent professionals, careful packaging.

④ Best prices & fast delivery & One year warranty & Safe purchase and payment.

⑤ Perfect after-sales service.

Delivery

All orders come with free shipping and no minimum purchase requirement.
In‑stock items are dispatched within 1–2 business days.
You will receive a tracking number by email the day after your parcel is shipped.
Delivery to Singapore typically takes 7–10 business days, depending on customs clearance and local delivery progress.
Public holidays, customs inspections, or unforeseen delays may affect delivery times.
Please ensure your shipping address is complete and accurate. We are not responsible for delays or returns caused by incorrect or incomplete address information.

Methods of payment

Paypal

Secure payment: Your credit card details are encrypted using the SSL (Secure Socket Layer) protocol and are never transmitted unencrypted over the network.

Accept payments through PayPal

PayPal has become one of the largest payment service providers in the world, comparable to Visa and MasterCard. With PayPal, you can accept credit cards as well as PayPal's own payment method.

It's a fast and secure way for customers to pay online via all major debit and credit cards, online bank transfers and via PayPal account holder payments. Customers don't even need a PayPal account to pay with PayPal.

Guarantee

Quality and safety: This ASUS B21N1818-2 battery contains advanced electronic components and has been tested according to strict CE standards. The ASUS B21N1818-2 battery contains a chip that prevents overcharging and short circuiting. On top of that the ASUS B21N1818-2 batteries are made from good quality cells which do not suffer from a 'memory effect'.

Assurance and warranty: ASUS B21N1818-2 purchased in our store are guaranteed for 12 months. Satisfied Refunded 30 days.

Shipped Direct from the Factory: Shopbatterypc.com ships its items almost directly from the factory, so you are sure to receive a brand new, full capacity battery!

Tips for using your battery safely

Use the correct charger — Always use the charger recommended by the manufacturer to avoid overheating or damage.
Avoid overcharging — Disconnect the battery once fully charged to extend its lifespan.
Keep away from extreme temperatures — Do not expose the battery to direct sunlight, fire, or freezing conditions.
Protect from moisture — Keep the battery dry and avoid contact with water or other liquids.
Do not disassemble or puncture — Tampering with the battery may cause leakage, fire, or explosion.
Dispose responsibly — Follow local regulations for battery recycling or disposal to protect the environment.

ASUS B21N1818-2 | 7.7V 37Wh Laptop Batteries

Asus 7.7V 37Wh B21N1818-2 Replacement Battery For Asus VivoBook 14 A412FA X412UA X412FJ 14 R424FA, ASUS VivoBook F412DA 14inch Series, ASUS A412D A412DA A412DK A412F Free Shipping to Singapore