# Battery Green Cell AS77ULTRA for ASUS A450 A550 F550 K550 R510 X450 X550

**URL:** https://aio.lv/en/product--green-cell-as77ultra--4015151
**Data updated:** 2026-02-12 09:58 (EET)
**Category:** Portable Device Batteries
**Manufacturer:** Green Cell
**Manufacturer code:** AS77ULTRA
**EAN:** 5903317220992
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 56.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 46.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--green-cell-as77ultra--4015151

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.99 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The Green Cell AS77ULTRA battery is a reliable replacement for ASUS laptops, compatible with models A450, A550, F550, K550, R510, X450, and X550. It offers high performance and longevity, ensuring your laptop runs smoothly. Ideal for users needing a dependable power source for everyday tasks.

## Long description

The Green Cell AS77ULTRA battery is a replacement power unit designed for compatible ASUS laptop models including A450, A550, F550, K550, R510, X450 and X550. Manufactured using Lithium‑Ion technology, this 3400 mAh black battery restores mobile power for daily computing tasks and offers a balance of capacity and compact form factor to fit the original mounting points and connectors of supported notebooks.
Advantages
The battery provides stable voltage and consistent performance through typical charge cycles, helping to maintain predictable runtime for office work, web browsing and multimedia playback. Its Li‑Ion chemistry ensures a favorable energy density while keeping weight and size suitable for portable use. The battery is produced to match mechanical and electrical specifications of the compatible laptop models so it fits without modification.
Suitable for
 Replacing a worn or failed battery in supported ASUS laptop models
 Extending mobile runtime for everyday productivity tasks
 Maintaining portable power for travel, study, or remote work
 Servicing refurbished laptops where original battery performance is reduced
Key specifications
 Battery technology: Lithium‑Ion (Li‑Ion)
 Nominal capacity: 3400 mAh
 Colour: Black
 Form factor: Replaceable internal laptop battery compatible with specified ASUS models
How to use
Before installation, power off the laptop and remove any external power source. Follow the laptop manufacturer's service instructions to access the internal battery compartment, disconnect the old battery connector, and remove the battery module. Install the Green Cell AS77ULTRA in the same orientation, connect the battery cable securely, and reassemble the laptop. After first installation, charge the battery fully before normal use to calibrate charge reporting. Observe standard safety precautions when handling Li‑Ion batteries.
Usage recommendations
Store and use the battery at moderate temperatures, avoid exposure to high heat or moisture, and do not subject the battery to impact or disassembly. For prolonged storage, keep the battery charged to approximately 40–60% and check charge periodically. If you notice abnormal heating, swelling, or performance degradation, discontinue use and replace the battery.

## Specifications

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

### Battery

| Feature | Value |
|---|---|
| Battery technology | Lithium-Ion (Li-Ion) |
| Battery capacity | 3400 mAh |
| Number of battery cells | 4 |
| Battery voltage | 14.4 V |
| Product colour | Black |

### Technical details

| Feature | Value |
|---|---|
| Type | Battery |
| Compatibility | A450 A550 F550 K550 R510 R510D R510DP X450 X550 X550D |
| Brand compatibility | Asus |

## FAQ

### How much does the Battery Green Cell AS77ULTRA for ASUS cost, and is it available for purchase?

The price is 56.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 62 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 16.07.2026 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 Green Cell 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 Green Cell 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/4015151/65717157_large.webp