Y&H 4.2KW On/Off Grid Hybrid Solar Inverter DC24V to AC220V, Built-in 120A MPPT 6200W 27A PV Input, Battery-Free Operatio,Dual AC Output,Offline Firmware Upgrade, for Home Energy Storage System
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TECHNICAL SPECIFICATIONS: Pure sine wave 4.2KW output with built-in 120A MPPT solar charger. Upgraded max PV input current to 27A (from 18A), supporting max 6200W PV array power. MPPT voltage range: 60-450Vdc, max open circuit voltage 500Vdc. Features dual AC load output (main 4200W + secondary 840-2940W), adjustable main load cut-off/return voltage from 20.0-26.0V in 0.1V increments. Supports four charging modes: Utility First, Solar First, Solar & Utility, Solar& Battery. This inverter supports battery-free operation. UPGRADED PERFORMANCE: New offline firmware upgrade function via COMM port allows software updates. Enhanced 27A PV input current increases solar energy harvesting by 50%. Optimized circuit design eliminates electromagnetic interference, ensuring stable operation of sensitive electronics like smartphones, tablets, and communication equipment without disruption. ADVANCED LITHIUM BATTERY INTEGRATION: Enhanced LIB-485 communication protocol enables seamless BMS connectivity with automatic parameter synchronization. LCD interface directly displays battery SOC, total voltage, charge/discharge current, cell temperatures, and cycle count. WiFi APP (optional) shows comprehensive lithium battery data in real-time. When batteries reach 100% charge, system automatically reduces grid input current to prevent energy waste. OPTIMIZED BATTERYLESS PV OPERATION: Revolutionary PV-only mode upgraded with intelligent current limiting technology prevents output voltage collapse, allowing larger loads to run directly from solar power without battery backup. Prevents frequent shutdowns during fluctuating solar conditions and ensures reliable pure sine wave output for all appliances including refrigerators and air conditioners. SMART DUAL LOAD CONTROL & MULTI-USE: Two independent AC outputs enable priority-based load shedding—critical loads remain powered while secondary circuits disconnect at user-defined voltage thresholds. Ideal for off-grid homes, cabins, emergency backup power, areas with frequent outages, and grid-tie energy savings. Compatible with mains or generator input, cold start function (23V), and comprehensive protection systems.
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TECHNICAL SPECIFICATIONS: Pure sine wave 4.2KW output with built-in 120A MPPT solar charger. Upgraded max PV input current to 27A (from 18A), supporting max 6200W PV array power. MPPT voltage range: 60-450Vdc, max open circuit voltage 500Vdc. Features dual AC load output (main 4200W + secondary 840-2940W), adjustable main load cut-off/return voltage from 20.0-26.0V in 0.1V increments. Supports four charging modes: Utility First, Solar First, Solar & Utility, Solar& Battery. This inverter supports battery-free operation. UPGRADED PERFORMANCE: New offline firmware upgrade function via COMM port allows software updates. Enhanced 27A PV input current increases solar energy harvesting by 50%. Optimized circuit design eliminates electromagnetic interference, ensuring stable operation of sensitive electronics like smartphones, tablets, and communication equipment without disruption. ADVANCED LITHIUM BATTERY INTEGRATION: Enhanced LIB-485 communication protocol enables seamless BMS connectivity with automatic parameter synchronization. LCD interface directly displays battery SOC, total voltage, charge/discharge current, cell temperatures, and cycle count. WiFi APP (optional) shows comprehensive lithium battery data in real-time. When batteries reach 100% charge, system automatically reduces grid input current to prevent energy waste. OPTIMIZED BATTERYLESS PV OPERATION: Revolutionary PV-only mode upgraded with intelligent current limiting technology prevents output voltage collapse, allowing larger loads to run directly from solar power without battery backup. Prevents frequent shutdowns during fluctuating solar conditions and ensures reliable pure sine wave output for all appliances including refrigerators and air conditioners. SMART DUAL LOAD CONTROL & MULTI-USE: Two independent AC outputs enable priority-based load shedding—critical loads remain powered while secondary circuits disconnect at user-defined voltage thresholds. Ideal for off-grid homes, cabins, emergency backup power, areas with frequent outages, and grid-tie energy savings. Compatible with mains or generator input, cold start function (23V), and comprehensive protection systems.
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