Here are the specifications for the Haisic 4kWh All-in-One Energy Storage System (Model: HS-TQS1.5KW+4000Wh):
Inverter Rating: 1.5kVA / 1500W Hybrid Off-Grid Inverter with a built-in 60A MPPT charge controller (up to 1500W solar input).
Battery Capacity & Chemistry: 4,019.2Wh (approx. 4kWh) usable capacity utilizing Grade A Lithium Iron Phosphate (LiFePO4) cells.
Voltage & Configuration: 12.8V Nominal Voltage system with a high capacity of 314Ah.
Lifespan & Protection: 6,000+ deep discharge cycles featuring an integrated smart BMS for overcharge and short-circuit protection.
Design & Form Factor: Compact, space-saving "all-in-one" stackable tower design equipped with wheels and a digital status display.