SAKO Alpha W ESS 300W Energy Storage System

🔌 Alpha-W-ESS-300W – Key Specifications 🔹 Inverter / Charger • Rated AC Output Power: 300W • Output Voltage Waveform: Pure Sine Wave • Output Voltage: 185V ~ 230Vac, 50Hz • Low DC Warning Point: ≤ 3.2Vdc • Low DC Cut-off Voltage: 2.9Vdc • Low DC Warning Return Voltage: > 20% • Charging Power (Utility + Solar): Max. 400W • Bulk Charging Voltage: 3.6Vdc • Float Charging Voltage: 3.5Vdc ________________________________________ 🔹 AC Input • Nominal Input Voltage: 230Vac • Low Loss Voltage: 90Vac ±7 • Low Loss Return Voltage: 100Vac ±7 • High Loss Voltage: 280Vac ±7 • High Loss Return Voltage: 270Vac ±7 • Max. AC Input Voltage: 300Vac • Nominal Input Frequency: 45~65Hz • AC Charging Power: Max. 300W ________________________________________ 🔹 Solar Input • Nominal PV Voltage: 30Vdc • PV Array MPPT Voltage Range: 10Vdc ~ 55Vdc • Max. PV Array Open Circuit Voltage: 56Vdc • Solar Charging Power: Max. 300W ________________________________________ 🔹 Lithium Iron Battery (LiFePO4 – Built-in) • Battery Capacity: 896Wh • Nominal Battery Voltage: 3.2Vdc • Typical Capacity: 280Ah • Max. Charge Current: 130A • Max. Discharge Current: 130A • Operation Voltage Range: 2.9Vdc ~ 3.6Vdc • Operating Temperature: -10°C ~ +50°C ________________________________________ 🔹 DC Output • DC Output Power: Max. 12V 60W • DC Output Sockets: o 1× 5V1A USB Charger o 2× DC 12V 5A o DC Power Jack (5.5 × 2.1mm) ________________________________________ 🔹 Display & Indicators • Display Function: LCD • LED Indicators: o 4 pcs SOC indicators o 1 pcs working status indicator ________________________________________ 🔹 Protection Features • Overcharge Protection • Over-discharge Protection • Overcurrent Protection • Short-circuit Protection • Over-temperature Protection ________________________________________ 🔹 Environment • Noise Level: < 40dB (1 meter) • Working Temperature: -10°C ~ +50°C • Humidity: 5% ~ 95% (No condensation) • Sea Level: ≤ 2000m ________________________________________ 🔹 Dimension & Weight • Product Size (L×W×H): 294 × 207 × 193 mm • Package Size (L×W×H): 400 × 274 × 252 mm • Net Weight: 12 kg