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3000W 48V low frequency pure sine wave off-grid inverter (peak power 9000W)

3000W 48V low frequency pure sine wave off-grid inverter (peak power 9000W)

SKU:LK3000-48

Regular price £649.99 GBP
Regular price Sale price £649.99 GBP
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Discover true power independence with our 3000W 48V Low Frequency Pure Sine Wave Off-Grid Inverter. This robust device turns your battery's DC power into smooth, reliable 230V AC electricity, just like at home. You can run anything from TVs and fridges to power tools, even in remote spots or during blackouts. Enjoy the comfort of steady, clean power wherever life takes you, knowing your essential appliances are always covered.


An inverter is a clever device that changes direct current (DC) from a battery into 230V alternating current (AC). This is the same type of electricity used by standard household appliances such as TVs, fridges, radios, and lights, and for charging laptops or mobile phones. By connecting this power inverter to a battery, you gain the ability to power appliances in areas without mains electricity. Think motorhomes, caravans, boats, farms, or any remote location. These inverters are also vital for off-grid systems and provide crucial backup power during unexpected outages.


Our inverter delivers pure sine wave output. This means the electricity it produces is incredibly smooth and stable, almost identical to normal mains electricity. This superior output is ideal for running a wider range of appliances, including sensitive electronics. It's also much more efficient compared to other types of inverters, like square sine wave or modified sine wave models.


What makes this inverter truly stand out is its low-frequency design. This provides several key advantages over higher frequency inverters. For example, it can operate at a peak power level of up to 300% of its nominal power for several seconds – that's a massive 9000W peak from its 3000W nominal rating! Higher frequency inverters usually manage only 200% peak power for a fraction of a second. Low-frequency inverters use sturdy transformers, making them stronger and less prone to damage compared to high-frequency models that rely on electronic components like MOSFETs.


Key Features and Benefits:
  • Powerful and Versatile Charger: Features a fast, built-in battery charger. You can select charging current options from 7A to 35A to efficiently charge your batteries from mains power. It offers advanced 4-step progressive charging and supports a variety of battery types. If not needed, the battery charger can be permanently switched off.
  • Flexible Power Modes: Choose between DC (battery) or AC (mains) priority modes. In AC priority mode, if connected to mains, your batteries will continuously charge, and appliances will run primarily on mains power. In DC priority mode, appliances always draw power from your batteries. If the battery charge drops too low, mains input automatically kicks in to charge batteries and power your devices.
  • Energy-Saving Mode: This intelligent feature allows the inverter to work in a "power on demand" standby mode. It only generates power when a load is connected, significantly saving energy and extending battery life.
  • Uninterruptible Power Supply (UPS): When running in AC (mains) mode, this system provides constant power. If the mains power fails, the inverter automatically switches to battery power. Your appliances will stay on without interruption.
  • Efficient Bypass Mode: Available when mains power is connected (in AC priority mode). This mode automatically links the AC mains input directly to the AC output. This bypasses the DC-to-AC conversion circuits, boosting efficiency and ensuring the output quality is identical to your mains input.
  • Informative LCD Display: A detailed LCD screen shows vital information at a glance. Easily monitor voltages, battery status, the current operating mode, and other important data.
  • Generator Compatible: This inverter can accept AC power input from a generator. For optimal performance, we recommend a generator with a nominal power rating twice that of the inverter.
  • Customizable Settings: Tailor the inverter to your specific needs. You can adjust the output voltage, output frequency, input voltage thresholds, battery type, and battery capacity to optimize performance for your setup.
  • High Power Capacity: With a 3000W nominal power and an impressive 9000W peak power rating, this inverter is suitable for most household appliances. This includes fridges, microwaves, TVs, power tools, vacuum cleaners, and many kitchen appliances (excluding cookers).
  • Comprehensive Protection: Equipped with essential safety features. It protects against overload, over-temperature, low battery voltage, and overcharge conditions, ensuring safe and reliable operation.

Technical Specifications:
  • Input: 48V DC
  • Output Voltage: 208V / 220V / 230V / 240V (programmable)
  • Output Frequency: 50Hz / 60Hz / auto (programmable)
  • Output Wave: Pure Sine Wave
  • Input Voltage Range: Normal or Wide (programmable)
  • Compatible Battery Types: Sealed Lead Acid, Gel, AGM, Calcium (programmable)
  • Battery Charging Current Options: 7A / 14A / 21A / 28A / 35A (programmable)
  • Power Rating: 3000W nominal, 9000W peak
  • Nominal Inverter Efficiency: 88%
  • Includes: Power Saving Mode, UPS and Bypass Mode, AC / DC Priority Mode
  • Minimum Battery Voltage: 40V
  • Low Battery Alert: 42V
  • Overcharge Protection Voltage: 62.8V
  • Power Factor: 0.9-1.0
  • Operating Temperature Range: 0 - 40°C
  • Weight: 26 kg
  • Size: 44.2 x 21.8 x 17.9 cm

Important Information & Support:
  • This product is covered by a 1-year manufacturer warranty.
  • A detailed user manual is provided (see Documents tab), explaining wiring, installation, and operation thoroughly.
  • Please note: This inverter uses AC power screw terminals instead of standard mains power sockets. This allows for connection to one or multiple AC mains power sockets using suitable AC cables. In the UK, 3-pin UK type mains sockets can be used, and in Europe, it connects to standard European mains sockets.
  • Cables are not supplied with this inverter. Detailed recommendations for cable length and thickness are available in the user manual to ensure safe and efficient setup.
  • Should you require assistance with installation or have any technical questions, we are pleased to offer FREE support. Please contact us via email or phone for expert guidance.

In summary, this 3000W 48V Low Frequency Pure Sine Wave Off-Grid Inverter is more than just a power converter; it's your gateway to dependable electricity, wherever you need it. Its robust low-frequency design, pure sine wave output, and intelligent features like the fast charger and UPS function mean you get reliable, clean power for all your essential appliances. Whether you're setting up an off-grid cabin, enhancing your RV experience, or simply preparing for unexpected power cuts, this inverter offers the power, protection, and peace of mind you deserve. Invest in consistent power for your adventurous lifestyle or emergency preparedness today.

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