# Qoltec Monolith power adapter/inverter Auto 4000 W Black

**URL:** https://aio.lv/en/product--qoltec-51935--10054643
**Data updated:** 2026-03-07 15:18 (EET)
**Category:** Power Inverters
**Manufacturer:** QOLTEC
**Manufacturer code:** 51935
**EAN:** 5901878519357
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 176.49 €
**Prices and availability valid until:** 2026-07-09 23:59
**Price without VAT (21%):** 145.86 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51935--10054643

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.06.2026 | free |
| Pickup points | 22.06.2026 | 1.99 EUR |
| Courier delivery to door | 22.06.2026 | 10.53 EUR |

## Summary description

The Qoltec Monolith is a 4000 W car inverter designed for efficient power supply. It operates on a 12 V input voltage and is ideal for powering devices on the go. Its sleek black design makes it a stylish addition to any vehicle.

## Long description

The Qoltec Monolith power adapter/inverter Auto 4000 W Black is a car inverter that converts 12 V DC from a vehicle electrical system to 230 V AC output suitable for standard household appliances and electronic devices. Designed for mobile use, it delivers up to 4000 W continuous power (as specified by the product name) and features a compact black housing intended to integrate unobtrusively into a vehicle interior. The unit is intended to provide AC power where mains supply is unavailable, enabling operation of tools, chargers, small appliances and multimedia equipment while on the move.
Advantages
The Qoltec Monolith provides high power output in a compact form factor compatible with 12 V vehicle systems. Its 230 V AC output makes it suitable for a wide range of devices that normally require mains power. Built with a focus on mobile power conversion, the inverter simplifies powering AC equipment in cars, vans and other vehicles without modifying the vehicle electrical system. The black finish offers a neutral aesthetic that blends with most vehicle interiors.
Suitable for
 Running laptop chargers and small office equipment during travel
 Powering small household appliances such as kettles or microwaves with matching power limits
 Operating power tools and battery chargers on job sites using a vehicle as the power source
 Supplying AC power for camping, road trips and mobile workshops
Key specifications
 Purpose: car inverter for converting vehicle DC to AC
 Power output: 4000 W (as indicated in product title)
 Input voltage: 12 V DC
 Output voltage: 230 V AC
 Colour: black
How to use
Install the inverter according to the vehicle manufacturer’s safety recommendations, connecting the input to the vehicle 12 V supply using appropriate cabling and fusing. Place the unit on a stable, ventilated surface away from heat sources and moisture. Connect AC devices to the inverter's 230 V outlets and switch the inverter on following the product's control instructions. Monitor the inverter for thermal load and avoid exceeding the rated power output to prevent overload. When not in use, switch the inverter off and disconnect from the vehicle supply if long periods of inactivity are expected.
Usage recommendations
Use appropriate cable gauges and an inline fuse sized for the inverter’s input current. Ensure the combined power draw of connected devices does not exceed the inverter’s rated output. For sensitive electronics, verify if the inverter provides pure sine wave output or if additional surge protection or voltage regulation is needed. Regularly inspect cables and connections for wear and maintain proper ventilation to prevent overheating.

## Specifications

### Design

| Feature | Value |
|---|---|
| Product colour | Black |

### Packaging content

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

### Features

| Feature | Value |
|---|---|
| Power supply type | Auto |
| Input voltage | 12 |
| Output voltage | 230 |
| Purpose | Car inverter |
| Output power | 4000 W |
| Output frequency | 50 |

## FAQ

### How much does the Power adapter/inverter Qoltec Monolith 4000 W cost, and is it available for purchase?

The price is 176.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 234 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 17.06.2026 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 Power adapter/inverter Qoltec Monolith 4000 W 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 QOLTEC 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 QOLTEC 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: purpose, power supply type, input voltage, output voltage, 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/10054643/64862431_large.webp