# Laptop battery Asus C21N1818 4730mAh original replacement for compatible Asus notebooks

**URL:** https://aio.lv/en/product--asus-nb431724--8075433
**Data updated:** 2025-12-30 06:12 (EET)
**Category:** Portable Device Batteries
**Manufacturer:** Asus
**Manufacturer code:** NB431724
**EAN:** 9990000431724
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 67.99 €
**Prices and availability valid until:** 2026-08-23 23:59
**Price without VAT (21%):** 56.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--asus-nb431724--8075433

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 31.07.2026 | free |
| Pickup points | 05.08.2026 | 1.79 EUR |
| Courier delivery to door | 05.08.2026 | 4.99 EUR |

## Summary description

Original Asus laptop battery C21N1818 with 4730mAh capacity designed as a replacement for compatible Asus notebooks. Provides portable power for everyday use, offering reliable runtime for typical tasks such as browsing, office work and media playback. Easy to install following manufacturer guidelines and restores mobility when the original battery is worn.

## Long description

Original notebook battery ASUS C21N1818-1 with a capacity of 4730mAh (37Wh) and a nominal voltage of 7.7V. This replacement Li-ion battery is intended for compatible ASUS VivoBook and related notebook models and restores portable power when the original battery is worn. The product uses quality rechargeable cells and integrated microcontrollers for charge control.
Advantages
The battery uses lithium-ion cells that provide stable capacity without memory effect and are rated for multiple charge cycles. Standard-size construction and original-equivalent cells ensure compatibility with listed ASUS notebook models. Built-in charging control helps maintain balanced charging and prolong cell life.
Suitable for
Replacing a worn or failing battery in compatible ASUS VivoBook and Vivobook S notebooks
Restoring mobile use for everyday tasks such as web browsing, office work and media playback
Use as a spare battery for travel or long work sessions away from a power outlet
Key specifications
Model: ASUS C21N1818-1 (also listed as C21N1818, C21PPJH, C21PpJH)
Capacity: 4730 mAh (37 Wh)
Voltage: 7.7 V
Cell type: Li-ion (lithium-ion rechargeable cells)
Compatible part numbers: 0B200-03280500, 0B200-03190800, 2ICP7/54/83 and others as listed
How to use
Power the notebook off and remove any external power source before replacing the battery. Follow the notebook manufacturer’s instructions for battery replacement: remove the back cover or battery compartment screws, disconnect the old battery connector carefully, and connect the replacement battery in the same orientation. Reassemble the device and charge the new battery fully before first use to allow the battery management system to calibrate.
Usage recommendations
For best results, use the battery in the listed compatible ASUS models only and follow safe charging practices. If unsure about compatibility, consult a specialist or provide your notebook model and part number before purchase.

## FAQ

### How much does the Asus C21N1818 laptop battery 4730mAh cost, and is it available for purchase?

The price is 67.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 31.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Asus products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Asus service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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