# Battery ASUS Extra Digital NB431823 B21N1818

**URL:** https://aio.lv/en/product--extra-digital-nb431823--10905566
**Data updated:** 2025-12-30 12:55 (EET)
**Category:** Portable Device Batteries
**Manufacturer:** extra digital
**Manufacturer code:** NB431823
**EAN:** 9990000431823
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 51.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 42.97 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--extra-digital-nb431823--10905566

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.89 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

The Extra Digital NB431823 battery is designed for ASUS laptops, specifically compatible with models B21N1818. It offers reliable power supply and longevity, ensuring your device runs smoothly. Ideal for users needing a dependable replacement battery for extended laptop use.

## Long description

Extra Digital NB431823 (B21N1818) is a replacement lithium polymer battery for compatible ASUS laptops. With a nominal capacity of 4150 mAh (32 Wh) and a rated voltage of 7.6 V, this black battery is intended as a direct power source replacement to restore mobile runtime for notebooks that accept the B21N1818 battery model.
Advantages
This Extra Digital battery uses lithium polymer technology for stable discharge and compact design. It matches the original B21N1818 specifications of 4150 mAh and 7.6 V, providing a straightforward swap-in replacement to recover the laptop’s operating time. The product color is black and it is offered as a single unit suitable for consumer replacement.
Suitable for
ASUS laptops compatible with model B21N1818
Users needing a replacement battery to restore mobile runtime
Owners seeking a battery with lithium polymer chemistry and 4150 mAh capacity
Key specifications
Model: NB431823 / B21N1818
Battery technology: Lithium Polymer (LiPo)
Capacity: 4150 mAh (32 Wh)
Voltage: 7.6 V
Colour: Black
Brand: Extra Digital
MPN: NB431823
EAN: 9990000431823
How to use
Power down the laptop, disconnect the charger and remove the bottom cover following the device manufacturer’s instructions. Carefully disconnect the existing B21N1818 battery connector and remove the old battery. Install the Extra Digital NB431823 in the same orientation, connect the battery cable securely, replace the cover and fasten screws. After reassembly, charge the battery fully before regular use and verify correct operation in the operating system’s battery status utility.
Usage recommendations
Use only with laptops specified for B21N1818 replacement batteries. Avoid exposure to extreme temperatures, physical damage, or liquid. Dispose of the battery according to local electronic waste regulations and follow manufacturer guidelines for safe charging and storage.

## Specifications

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |
| Warranty period | 1 year(s) |

### Battery

| Feature | Value |
|---|---|
| Battery technology | Lithium Polymer (LiPo) |
| Battery capacity | 4150 mAh |
| Battery voltage | 7.6 V |
| Battery capacity | 32 Wh |
| Product colour | Black |

### Technical details

| Feature | Value |
|---|---|
| Type | Battery |
| Compatibility | B21N1818 |
| Brand compatibility | Asus |

## FAQ

### How much does the Battery ASUS Extra Digital NB431823 cost, and is it available for purchase?

The price is 51.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 02.07.2026 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 extra digital 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 extra digital 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: battery technology, battery capacity, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/10905566/61832383_large.webp