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 Firm

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, al Sold on Yonghui Solar Inverter, Various hybrid inverters, grid tie inverters, (https://yonghuisolar.com/products/5-5kw-100a-mppt-500vdc-pv-input-220vac-48vdc-hybrid-inverter-1). The price shown is the retail price on that storefront on 2026-10-25, not a GreenB2B quote or a wholesale price.