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

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.