# Uninterruptible Power Supply EVER DUO 550 AVR USB, 0.55 kVA / 330 W, 4× C13 outlets, USB Type-B, AVR, 12 V 5 Ah VRLA

**URL:** https://aio.lv/en/product--ever-tdavrto-000k5500--641455
**Data updated:** 2026-01-21 10:50 (EET)
**Category:** UPS
**Manufacturer:** EVER
**Manufacturer code:** T/DAVRTO-000K55/00
**EAN:** 5907683605124
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 70.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 58.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ever-tdavrto-000k5500--641455

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.89 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Line-interactive UPS EVER DUO 550 AVR USB provides power backup and surge protection for home or small office equipment. Rated 0.55 kVA (330 W) with AVR and sine waveform output (191–253 V, 50/60 Hz). Equipped with 4 C13 outlets, USB Type-B port for monitoring, internal 12 V 5 Ah VRLA battery (cold start supported), short-circuit and overload protection, audible alarms, and IP20 tower design. Operates at 0–40 °C and weighs 3.8 kg.

## Long description

The Ever DUO 550 AVR USB is a line-interactive uninterruptible power supply (UPS) designed to protect home and office equipment from power drops, surges and outages. With 0.55 kVA (330 W) output capacity, four C13 AC outlets and a USB Type-B port, it safeguards computers, monitors, telecom devices such as switches and routers, and fiscal equipment. The unit uses a sealed 12 V, 5 Ah lead‑acid battery in a compact tower housing with IP20 protection.
Advantages
The UPS integrates AVR (automatic voltage regulation) to correct low or high mains voltage without using battery power, reducing unnecessary battery discharge. A built-in HID USB interface allows basic communication with a computer without additional drivers, while the optional PowerSoft software provides monitoring and configuration of operating mode, load, battery charge and estimated runtime. The device supports cold start and automatic restart when mains power is restored after deep discharge.
Suitable for
 Home desktop computers and monitors
 Small office workstations and POS/fiscal devices
 Telecom equipment: routers, switches and small network devices
 Peripherals requiring short-term power backup during outages
Key specifications
 Output power capacity: 0.55 kVA (330 W)
 Outlets: 4 × C13 (AC outlets)
 Battery: sealed lead‑acid, 12 V, 5 Ah
 Communication: USB Type‑B (HID), PowerSoft software supported
 Form factor and protection: compact tower, IP20
 Weight: 3.8 kg
 Colour: Black
 Brand / Model: EVER / DUO 550 AVR USB (MPN: T/DAVRTO-000K55/00, EAN: 5907683605124)
How to use
Place the UPS on a stable, ventilated surface and connect the critical devices to the C13 outlets. Charge the internal battery by connecting the UPS to the mains before first use. Use the USB Type‑B connection to attach the unit to a computer for status monitoring; no driver installation is required for basic HID communication. For extended monitoring and configuration, install the PowerSoft software and follow the on‑screen instructions to view load, battery charge and runtime estimates. In case of extended mains failure the UPS will supply connected equipment from the internal battery until the battery is depleted; when mains power returns the unit will automatically restart the connected equipment. To perform a cold start, press the power button while the UPS is disconnected from mains.
Usage recommendations
Place the UPS away from heat sources and liquids, perform periodic battery self‑tests and replace the battery according to manufacturer guidelines. Avoid overloading the UPS beyond its rated 330 W output to ensure reliable backup and battery longevity.

## Specifications

### Ports & interfaces

| Feature | Value |
|---|---|
| AC outlets quantity | 4 AC outlet(s) |
| AC outlet types | C13 coupler |
| USB port | Yes |
| USB port type | USB Type-B |

### Battery

| Feature | Value |
|---|---|
| Battery technology | Sealed Lead Acid (VRLA) |
| Number of batteries supported | 1 |
| Battery voltage | 12 V |
| Battery capacity | 5 Ah |
| Cold start | Yes |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Form factor | Tower |
| International Protection (IP) code | IP20 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 3.8 kg |
| Height | 158 mm |
| Width | 84 mm |
| Depth | 252 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 20 - 80 |
| Storage temperature (T-T) | 0 - 40 |
| Operating temperature (T-T) | 0 - 40 |
| Storage relative humidity (H-H) | 20 - 95 |

### Features

| Feature | Value |
|---|---|
| Audible alarm(s) | Yes |
| Output power capacity | 0.55 kVA |
| Input frequency | 50/60 |
| Output power | 330 W |
| Power protection features | Short circuit, Overload |
| Surge protection | Yes |
| Input operation voltage (max) | 290 V |
| Input operation voltage (min) | 162 V |
| Output operation voltage (min) | 191 V |
| Output operation voltage (max) | 253 V |
| Output frequency | 50/60 |
| Number of input phases | 1 |
| Number of output phases | 1 |
| Waveform | Sine |
| Automatic Voltage Regulation (AVR) | Yes |
| UPS topology | Line-Interactive |
| Audible alarm modes | Overload alarm, Low battery alarm, Fault |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 4200 g |
| Package depth | 286 mm |
| Package height | 225 mm |
| Package width | 122 mm |

## FAQ

### How much does the UPS EVER DUO 550 AVR USB 0.55 kVA cost, and is it available for purchase?

The price is 70.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 14 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 08.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can UPS EVER DUO 550 AVR USB 0.55 kVA be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 EVER 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 EVER 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: ac outlets quantity, weight, output power capacity, output power, 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.

### Where can I download the instructions for UPS EVER DUO 550 AVR USB 0.55 kVA?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/641455/65769341_large.webp