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-7% SaleCompact 1.5kW pure sine inverter with 12V battery bus, 2000W MPPT solar input up to 500V, and 3000VA inductive surge capacity.
The Knox Argon 1500 (Model: 1.5kW-12-pV2000) is built for single-battery 12V residential and workstation backup systems in areas subject to unpredictable utility power. Standard budget off-grid inverters typically require multiple batteries wired in series (24V or 48V) to operate high-voltage solar arrays. The Argon 1500 eliminates this barrier by coupling a single 12VDC battery architecture with a high-voltage 500VDC Maximum Power Point Tracking (MPPT) controller, allowing users to harvest up to 2000W of solar power from high-efficiency modern panels without buying expensive, bulky multi-battery banks. Operating on a 230VAC utility standard, the unit solves severe low-voltage grid instability through an ultra-wide AC input range of 90VAC to 280VAC in appliance mode. When the utility voltage sags, the inverter maintains bypass to loads and continues charging the battery bank without nuisance-tripping into battery inversion. For IT equipment and desktop setups, a selectable 10ms transfer mode prevents sudden computer reboots during brownouts. ## Key Engineering Advantages - High-Voltage Single-String MPPT (30V–500V): Accepts an open-circuit voltage up to 500VDC, enabling users to wire 3 to 4 high-wattage monocrystalline panels in a single series string. This eliminates thick copper DC combiner runs, reduces cable heat loss, and begins charging at dawn with array voltages as low as 30VDC. - PV-Activated Lithium Battery Wake-Up: If an external lithium or LiFePO4 battery shuts down its internal BMS due to under-voltage cut-off, the Argon 1500 utilizes solar panel voltage to pulse current into the terminals, automatically resetting the BMS without requiring manual bench chargers. - Heavy-Duty 100A Solar Charging: Supports up to 100A continuous solar charging and up to 60A utility charging (100A max combined), allowing rapid replenishment of 12V deep-cycle lead-acid, gel, or lithium storage banks during short daylight or grid uptime intervals. - Compact 96mm Thermal Enclosure: Weighing just 3.8 kg, the slim wall-mounted chassis maximizes heat dissipation via internal smart fans while occupying minimal vertical wall space in compact indoor environments. ## Compatibility & Application - Battery Storage Compatibility: 12VDC nominal battery banks (Lead-Acid, Sealed Maintenance-Free, AGM, Gel, and LiFePO4 / Lithium-ion packs). Configured via standard CC/CV charging parameters. - Target Electrical Loads: Pure sine wave power (220/230VAC ±5%) for desktop computers, Wi-Fi routers, TV setups, energy-efficient fans, LED lighting fixtures, and light motor loads up to 1200W continuous on battery mode (1500W on bypass). - Connectivity: Fitted with a dedicated RJ45 interface for optional external Wi-Fi data loggers to provide mobile telemetry. ## Package Contents - 1x Knox Argon 1500 Inverter Unit (1.5kW-12-pV2000) - 1x User & Installation Manual - 1x RJ45 Communication Cable - 1x Wall Mounting Hardware Set
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Because a 12VDC inverter draws around 125A at full 1200W battery load, install short 25mm² to 35mm² pure copper battery cables under 1.5 meters to avoid excessive DC voltage drops.
Wire your solar panels in series up to a maximum open circuit voltage of 420VDC to leave a safe thermal margin below the 500VDC ceiling on cold winter mornings.
Switch the utility input mode to "Appliance Mode" (90V–280V) if your neighborhood suffers from evening brownouts, keeping the inverter from cycling the battery unnecessarily.
If your lithium battery enters safety sleep mode, ensure your solar isolator switch is turned on; the Argon 1500 uses solar power to auto-revive the BMS.
A1: No, the Knox Argon 1500 requires a connected 12V battery bank (lead-acid, gel, or lithium) to establish its DC control bus and maintain inverter voltage regulation.
A2: The Argon 1500 delivers 1200W continuous output when running exclusively on battery mode, while supporting up to 1500W when running on utility grid bypass.
A3: You can connect up to 2000W of solar panels, typically consisting of three to four 500W–550W mono PERC panels wired in a single series string within the 500VDC Voc limit.
A4: Yes, the Argon 1500 handles refrigerators up to 300 liters, as its 3000VA surge rating absorbs the compressor start-up current spike without tripping.
A5: No, the Knox Argon 1500 does not support parallel operation; it is designed strictly as a standalone off-grid inverter for dedicated distribution sub-panels.
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