# Laptop power adapter Energy4U CA21 — 90 W, 20 V, 4.5 A, 5.5 mm plug

**URL:** https://aio.lv/en/product--energy4u-ca21--11836725
**Data updated:** 2026-03-09 14:50 (EET)
**Category:** Portable Device Chargers
**Manufacturer:** Energy4U
**Manufacturer code:** CA21
**EAN:** 5901571080499
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.49 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 12.80 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--energy4u-ca21--11836725

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Energy4U CA21 is a 90 W laptop power adapter delivering 20 V at 4.5 A with a 5.5 mm DC connector. Designed to replace or spare original chargers, it provides regulated output for powering and charging compatible laptops and ultrabooks. Suitable for home, office, and travel use where matching voltage, amperage and connector size are required.

## Long description

Energy4U CA21 is a 90 W laptop power adapter that provides a regulated 20 V output at 4.5 A through a 5.5 mm DC plug. Designed as a replacement or spare for compatible laptops and ultrabooks, this adapter supplies stable power for device operation and battery charging. Its compact brick-style housing and standard center-positive connector make it suitable for everyday use at home, in the office, or on the move when voltage, current and connector dimensions match the laptop requirements.
Advantages
The adapter delivers a steady 20 V / 4.5 A output with power protection features that help maintain stable charging and operation. The 5.5 mm plug fits many laptop models that require this connector size, ensuring physical compatibility where specified. Its universal AC input range and compact design reduce bulk in a laptop bag while providing enough power for typical productivity and multimedia tasks. Built-in safety measures protect against common issues such as overcurrent and short circuit conditions, supporting reliable daily use.
Suitable for
 Replacing a lost or damaged original charger with matching voltage, amperage and 5.5 mm connector
 Providing an additional power adapter for work, home, or travel
 Powering laptops and ultrabooks that accept 20 V input at up to 4.5 A
 Use with docking stations or peripherals that accept a 5.5 mm DC input and the specified electrical ratings
Key specifications
 Output power: 90 W
 Output voltage: 20 V
 Output current: 4.5 A
 Connector type: 5.5 mm DC plug (center positive)
 Form factor: external AC adapter (brick) with detachable AC cord
 Intended use: powering and charging compatible laptops and ultrabooks
How to use
Confirm that your laptop requires 20 V and draws no more than 4.5 A and that the device accepts a 5.5 mm center-positive plug. Connect the AC cord to the adapter and plug it into a mains outlet. Insert the 5.5 mm DC plug into the laptop power socket until it seats firmly. When connected, the adapter will supply power and charge the laptop battery according to the laptop's charging management. Disconnect from mains before unplugging from the laptop if required by the device manual, and avoid connecting to incompatible equipment.
Usage recommendations
Use the Energy4U CA21 only with devices that match the specified voltage, current and connector size. Keep the adapter on a hard, ventilated surface during operation, avoid exposure to liquids and extreme temperatures, and inspect cables and the plug regularly for damage. If the adapter becomes unusually hot, emits odors, or shows visible damage, discontinue use and replace it.

## FAQ

### How much does the Energy4U CA21 laptop power adapter 90 W cost, and is it available for purchase?

The price is 15.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 15.07.2026 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 Energy4U 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 Energy4U 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

https://aio.lv/img/cache/product/11836725/67236338_large.webp