PHOTONIC UNIVERSE OFF-GRID POWER 3000W 12V Low Frequency Pure Sine Wave Off-Grid Inverter Model LK3000 | 9000W Peak | Integrated 90A Charger The Photonic Universe 3000W 12V Low Frequency Pure Sine Wave Off-Grid Inverter (Model LK3000) provides a robust and reliable solution for converting 12V battery power into stable, clean 230V AC electricity. Designed for demanding applications, this inverter delivers 3000W of continuous power with an impressive 9000W peak, making it ideal for motorhomes, boats, remote cabins, or as a dependable backup power source during mains outages in the UK. Its low-frequency design, featuring sturdy transformers, ensures superior surge capacity and enhanced durability compared to high-frequency models. With an integrated 90A multi-stage battery charger and flexible operating modes, this unit offers true energy independence and peace of mind for sensitive electronics and motor-driven appliances. KEY BENEFIT: Delivers 3000W continuous power with 9000W peak surge capacity for demanding loads. Key Features ▶ Pure Sine Wave Output — Ensures clean, stable 230V AC power for all sensitive electronics. ▶ Low Frequency Design — Offers superior surge capacity (up to 300% nominal) and enhanced durability. ▶ Integrated 90A Charger — Fast, 4-step battery charging, adjustable from 18A to 90A. ▶ UPS Functionality — Automatic transfer to battery power during mains outages for uninterrupted supply. ▶ Programmable Settings — Customise output voltage, frequency, input thresholds, and battery type. ▶ Energy-Saving Mode — "Power on demand" standby to conserve battery life. ▶ Generator Compatible — Accepts AC input from a generator for flexible charging and power. ▶ Clear LCD Display — Monitor essential system information at a glance. Technical Specifications Parameter Value Input Voltage 12V DC Continuous Power 3000W Peak Power 9000W Output Wave Pure Sine Wave Output Voltage 208V / 220V / 230V / 240V (programmable) Output Frequency 50Hz / 60Hz / auto (programmable) Charger Current 18A / 36A / 54A / 72A / 90A (programmable) Nominal Inverter Efficiency 88% Minimum Battery Voltage 10V Low Battery Alert 10.5V Overcharge Protection Voltage 15.7V Operating Temperature 0 - 40°C Weight 26 kg Dimensions (L x W x H) 44.2 x 21.8 x 17.9 cm Operating & Power Guidance Mode/Function Description AC Priority Mode Automatically charges batteries from mains and powers appliances directly from mains when available. DC Priority Mode Always powers appliances from batteries, even if mains input is connected, prioritising off-grid usage. UPS Function Provides Uninterruptible Power Supply, automatically switching to battery power during mains outages. Bypass Function When mains power is present in AC priority mode, it routes mains directly to appliances, boosting efficiency. Energy-Saving Mode Operates in "power on demand" standby, generating power only when a load is detected to save energy. Typical Applications Application Description Motorhomes & Caravans Powering household appliances like fridges, TVs, and laptops on the go. Boats & Marine Vessels Providing reliable AC power for onboard electronics and comforts. Remote Cabins & Off-Grid Homes Establishing a stable power supply for essential and comfort appliances in isolated locations. Backup Power Systems Ensuring continuous power for critical loads during mains power cuts. Small Business & Workshops Running power tools, lighting, and office equipment where grid power is unavailable or unreliable. Built-In Protection Functions This Photonic Universe inverter is equipped with comprehensive safety features to protect both the unit and your connected appliances. These include • Overload Protection • Over-Temperature Protection • Low Battery Protection • Overcharge Protection. These safeguards ensure reliable and safe operation in various off-grid and backup power scenarios. Common Questions What types of batteries are compatible with this inverter? The inverter features a programmable 4-step charger compatible with various 12V battery types, including Sealed Lead Acid, Gel, AGM, and Calcium batteries. You can select the appropriate battery type in the settings. Can I use this inverter with a generator? Yes, this inverter is generator compatible. It can accept AC power input from a generator to charge batteries and power loads. For optimal performance, it is recommended that the generator's nominal power is at least twice the inverter's rated power (i.e., 6000W or more for this 3000W inverter). What kind of appliances can this 3000W inverter power? With 3000W continuous power and 9000W peak, it can power most household appliances, including fridges, microwaves, TVs, power tools, vacuum cleaners, and kitchen appliances. Please note it is not suitable for cookers. Always check the power requirements of your specific appliances. How does the low-frequency design benefit me? The low-frequency design, utilising heavy-duty transformers, provides superior surge capacity (up to 300% of nominal power for several seconds) which is crucial for starting motor-driven appliances. This design also contributes to greater durability and robustness compared to lighter high-frequency models. Installation Notes This inverter uses AC power screw terminals for secure and flexible connection to your mains wiring. Connecting cables are not supplied; detailed recommendations for suitable cable length and thickness are in the user manual. A comprehensive user manual is provided, explaining all aspects of wiring, installation, and operation. For any installation queries or technical support, assistance is available via email or phone. Before You Buy Verify your battery bank voltage is 12V DC to ensure compatibility with this inverter. Consider your total continuous power requirements and peak surge demands to ensure the 3000W continuous / 9000W peak rating is sufficient. Review the dimensions (44.2 x 21.8 x 17.9 cm) and weight (26 kg) to confirm suitable mounting space. Familiarise yourself with the programmable settings to optimise performance for your specific setup. Always verify product specifications and compatibility with your existing system components before purchase. This product includes a 1-year manufacturer warranty.
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