QOLTEC Voltage converter QOL51940
Specification
Specification Tecdoc
UPS Converter Pure Sine 300W / 600W 12V
Converter + Battery Charger + UPS · 12 V → 230 V AC
Product code: 51940
Key features
3 functions in one device
Voltage converter + battery charger + UPS power supply — a complete mobile and emergency solution
Pure sine wave
Current identical to a 230V socket — safe for any device, including equipment sensitive to waveform shape
15A battery charger
When connected to the network, the device automatically charges the battery with up to 15A current — no additional devices needed
UPS — emergency power supply
Automatic switch to battery power in case of power failure — CO furnace, router, and medical equipment work without interruption
5-level protection
LVP, OVP, OCP, OTP, SCP — full protection of devices and battery under all working conditions
Intelligent cooling
The fan turns on only when the device is under load — silence under light load and protection against overheating
Product description
Qoltec brand converter with UPS function and battery charging capability with a continuous power of 300W and sine waveform. Perfect for places lacking direct access to the power grid. The product has a built-in socket compatible with European plugs, a power cable, USB port, fan, and LEDs indicating device operation. The set includes a complete set of fuses and cables.
- Simultaneous battery charging and powering connected devices
- Automatic switch to emergency power in case of network failure
- Pure sine wave — safe for any device
Three functions in one device
Qoltec brand converter combines the functions of:
- 12V to 230V voltage converter — when connected to a battery, the converter draws the necessary energy to power the connected device
- Battery chargers — when connected to the network, the device automatically switches to battery charging mode
- UPS power supply — when a network power failure is detected, the device switches to emergency power mode, using the energy stored in the battery until network voltage returns
The converter can simultaneously charge the battery and power connected devices.
Voltage converter, meaning mobile energy in pure form
Qoltec brand converter is a pure sine, generating current the same as in a 230V socket, ensuring safety for all connected devices. It is perfect for power outages and during travel when there is no access to a socket.
When choosing the right converter, it is worth paying attention to the battery voltage, which must match the one specified on the converter to provide our equipment with the right working conditions. The number of connected devices is also important, e.g., when connecting a laptop and printer, the power of both devices should be summed. Remember that the power consumed by the connected device should not exceed 85% of the converter's rated power.
Don't lose energy while traveling
The product is perfect as a power source in campers or trailers during family trips. Planning a longer vacation at a campsite or by the lake and looking for a way to connect a laptop or charge a phone on a yacht? It's worth preparing well. Thanks to the Qoltec brand converter, you will be able to power your devices anywhere and enjoy convenience and comfort.
The voltage converter will be an ideal power source for yacht and boat owners. This intelligent device will allow you to power equipment during long trips away from home, featuring a USB port and network sockets to which electrical devices can be connected. You can charge your phone, laptop, or connect another device whose power does not exceed the converter's power, and you can also charge the battery simultaneously.
Devices with power up to 150W, such as a smartphone or laptop, can be powered by energy drawn from the cigarette lighter socket during travel.
Depending on the power consumed by the device, the 300W converter can power:
- RTV equipment: TV, game console, music equipment, radio
- Household appliances: refrigerator, freezer
- Office equipment: computers, printers, laptops
- Others: power tools, e.g., drill
The converter can also be used not only during travel but also as an emergency power source, e.g., to maintain a CO furnace or to power equipment as a UPS power supply during temporary power outages from the grid.
Durable and lightweight housing
The housing is designed from high-quality aluminum resistant to shocks and mechanical damage. It's an ideal choice for people who enjoy long journeys. With the converter featuring a built-in network socket, you can use almost any device requiring a socket connection. Additionally, the product has a USB port for charging mobile devices and a fan ensuring proper cooling.
Full confidence in the quality of your device's power supply
The product is equipped with a range of protections that guarantee full protection for connected devices. Additionally, the set includes a spare fuse to ensure the longest possible operation of the equipment.
The converter features:
- UVP protection — protects devices from too low output voltage, which affects the stability of connected devices
- SCP protection — this is short-circuit protection
- OVP protection — this is protection against too high output voltage and damage to connected devices
- OCP protection — this is protection against too high current on the line
- OTP protection — this is protection against overheating
Trust confirmed by warranty
Do you care about the high quality of the purchased product? Our solutions will meet your expectations. The Qoltec brand has been awarded the Consumer Laurel, and the product is covered by a warranty valid from the date of purchase.
Protection system
Technical parameters
| Specification | |
| Continuous power | 300 W |
| Total power (peak) | 600 W |
| Input voltage (DC) | 12 V DC |
| Output voltage (AC) | 230 V AC |
| Voltage waveform | Pure sine wave |
| Idle current | > 0.6 A |
| Output frequency | 50 Hz ± 0.5 Hz |
| Efficiency | 90% |
| Cooling | Intelligent cooling |
| USB port | 5 V / 1 A |
| Protections | LVP / OVP / OCP / OTP / SCP |
| Polarity protection | Fuse |
| Battery charger function | |
| AC input voltage (charger) | 190 ~ 260 V AC |
| DC charging voltage | 14.6 V DC |
| Charging current | 15 A |
| Battery maintenance voltage | 13.8 V DC |
| General data | |
| Operating temperature range | –10°C to +50°C |
| Dimensions (L × W × H) | 135 × 290 × 80 mm |
| Net weight | 1.758 kg |
Applications
Set contents
- 1 × Converter
- 2 × Fuse
- 1 × Set of cables
- 1 × Cable mounting key
- 1 × Warranty card
- 1 × User manual
About the company
25 years of tradition
Carefully selected components for maximum durability — longer trouble-free operation and lower operating costs throughout the product's life cycle.
High quality at an affordable price. Qoltec optimizes production costs without any compromises in technical parameters and reliability.
Modern aesthetics and thoughtful ergonomics — Qoltec products are visually and functionally tailored to the demands of the contemporary market.