The SAA-D4000AL is our medium-high power off-grid power conversion unit, specially developed for 12V lead-acid and lithium battery storage systems. It converts direct current from batteries into standard 220V alternating current steadily, perfectly solving power supply troubles for areas without stable municipal grid. This model gains great popularity among importers from Southeast Asia, Africa and Central Asia, widely used in household backup power, rural solar projects and mobile vehicle power systems.

• Temperature Adaptive Mute Cooling System: Aviation-level noise reduction structure plus automatic speed-adjust fan. The fan only runs at high speed when the machine heats up under heavy load. It keeps quiet during light-load standby, meanwhile cuts down idle power loss to extend your battery service time greatly.
• Intelligent Microcomputer Power Management Core: Equipped with dedicated energy-saving control chip, the inverter realizes low standby consumption. It performs better in long-time unattended operation for remote family solar power stations.
• Optimized Soft-Start Technology: Slowly lifting output voltage during startup avoids startup failure caused by inductive loads such as water pumps and refrigerators. When sudden load surge happens, voltage drops moderately and restores quickly, preventing instant damage to the host circuit and your electric devices.
• Dual LED Digital Monitoring Screen: Independently displays battery input voltage and real-time load output power. You can easily know battery remaining capacity and power consumption status at a glance, helping you arrange power usage reasonably.
• Complete Multi-Layer Circuit Protection System: Comprehensive safety features including low voltage warning, overload protection, short-circuit lock protection, overheat safety shutdown, and overvoltage input protection.
• Practical 5V 1A USB Output: No extra charger adapter needed, you can directly charge mobile phones, power banks, speakers and other portable digital gadgets anytime.

• Home emergency power supply when city power fails
• RV, camper and yacht mobile power supply system
• Off-grid solar power supply for mountain villages, pastoral areas and island families
• Field construction equipment, outdoor work equipment power supply
• Remote shops, mountain B&B, agricultural equipment standby power
• Household emergency power supply for large-power electrical appliances during municipal power outages
• RV, camper, yacht medium and large load mobile power system
• Off-grid solar power stations in mountain villages, remote pastoral areas and island areas
• Field engineering construction equipment power supply, agricultural irrigation equipment power supply
• Mountain resort, remote store backup power supply system