1.copper transformer 2.DC TO AC inverter 3. Pure sinewave inverter 4.with battery charger 5.large charging current 35- ... sine wave best power off grid solar inverter 1000W 2000w 3000w 4000w 5000w 6000w dc/ac pure sine wave inverter for all kinds of appliances ... current is adjustable 25%, 50%, 75% .100%(optional)13. Suitable for solar system, motor, water pump ,Wind turbine air conditioner, etc. ...