# Inverter UPS and Battery Charger QOLTEC 12 V to 230 V Pure Sine Wave 300 W / 600 W

**URL:** https://aio.lv/en/product--qoltec-eb1664032776--11677614
**Data updated:** 2026-02-16 07:08 (EET)
**Category:** Power Inverters
**Manufacturer:** QOLTEC
**Manufacturer code:** EB1664032776#
**EAN:** 310000230432
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 125.00 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 103.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-eb1664032776--11677614

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 26.06.2026 | free |
| Pickup points | 01.07.2026 | 1.99 EUR |
| Courier delivery to door | 01.07.2026 | 4.99 EUR |

## Summary description

QOLTEC pure sine wave inverter with UPS and battery charger functions converts 12 V DC to 230 V AC. Available power ratings: 300 W and 600 W. Provides clean AC output for sensitive electronics, supports battery charging and uninterrupted power supply switching. Suitable for vehicles, off-grid setups, small home appliances and emergency backup to keep devices running reliably.

## Long description

QOLTEC 12 V to 230 V pure sine wave inverter with integrated UPS and battery charger converts DC battery power into stable AC output for sensitive electronics. Available in 300 W and 600 W power ratings, the device provides clean 230 V AC at pure sine wave quality, automatic switching to battery power in case of mains failure, and managed battery charging when mains is present. The compact design is intended for use in vehicles, off-grid installations, and as a small-scale home emergency backup to keep essential appliances and electronics running reliably.
Advantages
The inverter delivers a pure sine wave output that reduces the risk of interference and damage to sensitive equipment such as laptops, audio/video gear and medical devices. Built-in UPS functionality ensures seamless transfer between mains and battery power, minimising interruptions to connected loads. Integrated battery charger and configurable charging parameters allow maintaining battery health while providing reliable power. Two power variants (300 W and 600 W) let you choose a model that matches expected loads and installation constraints.
Suitable for
 Powering laptops, routers and small office electronics during outages
 Running small household appliances and lighting in off-grid cabins or caravans
 Providing backup power for medical devices that accept inverter supply
 Supplying audio/video equipment and sensitive electronics requiring clean sine wave
Key specifications
 Input voltage: 12 V DC
 Output voltage: 230 V AC, pure sine wave
 Available continuous output power: 300 W or 600 W
 UPS function with automatic mains-to-battery transfer
 Integrated battery charger with adjustable charging behavior
 Protection features: overload, short circuit and thermal protection
 Compact housing suitable for vehicle and small installation spaces
How to use
Connect the inverter to a compatible 12 V battery using appropriate gauge cables and secure terminals. When mains AC is available, plug the inverter into the mains input so the unit can charge the battery and supply connected loads. Connect appliances to the AC output sockets, ensuring the combined load does not exceed the selected model's continuous power rating (300 W or 600 W). In the event of mains loss, the inverter's UPS function will switch the load to battery power automatically; monitor battery state and recharge as needed to maintain reserve capacity.
Usage recommendations
Use cables and fuses sized for the inverter's input current, install the unit in a well-ventilated, dry location, and avoid exposing it to high temperatures or moisture. Match the inverter capacity to the total power draw of connected devices, and allow for surge currents from motor-driven loads. Regularly check battery health and charger settings to extend service life and ensure reliable UPS operation.

## FAQ

### How much does the QOLTEC Pure Sine Inverter UPS 12V→230V 300/600W cost, and is it available for purchase?

The price is 125.00 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 26.06.2026 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 QOLTEC Pure Sine Inverter UPS 12V→230V 300/600W 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

## Image

https://aio.lv/img/cache/product/11677614/66997023_large.webp