800VA 500W 12V Small Off-Grid Solar Inverter with PWM Charger

1. Compact Off-Grid Solar Inverter

This compact off-grid solar inverter combines 12 V battery operation, 500 W pure sine wave AC output and PWM solar charging in one unit. It is designed for small standalone solar systems requiring AC output, USB charging and low-power 12 V DC connections.

Two configurations are available. Both provide 800 VA capacity and 500 W rated output, while the supported photovoltaic-array power and maximum solar-charging current vary by configuration.

2. 500 W Pure Sine Wave AC Output

• 800 VA / 500 W Rated Output: Supplies compatible small appliances and electronic equipment within the inverter’s rated capacity.
• 1000 VA Surge Capacity: Supports temporary startup demand from compatible loads within the specified surge limit.
• Pure Sine Wave Supply: Provides an AC waveform suitable for compatible electronic devices and small household equipment.
• 220 V AC Output: Provides a catalog-specified 220 V, 50 Hz AC output.
• Peak Inverter Efficiency Above 91%: The supplier specifies peak battery-to-inverter conversion efficiency above 91%.

3. 12 V Battery System

• 12 V DC Battery Platform: Designed for a compatible 12 V battery system.
• 14 V DC Float-Charging Voltage: Provides the specified float-charge voltage.
• 16 V DC Protection Threshold: Provides the stated battery-side protection voltage.
• Low Self-Discharge: The supplier states a monthly self-discharge rate below 3%.
• Battery-System Selection: Battery chemistry, capacity, charging requirements and voltage limits must be confirmed before installation.

4. PWM Solar Charging

• PWM Charge Controller: Uses MCU-controlled PWM charging for compatible 12 V batteries.
• 14-16 V DC PV Operating Range: Supports compatible low-voltage photovoltaic input within the stated operating range.
• 18 V DC Maximum PV Open-Circuit Voltage: The connected solar array must remain below this limit under all operating and temperature conditions.
• 200 W PV Configuration: Supports up to 200 W of photovoltaic-array power and 15 A maximum solar-charging current.
• 320 W PV Configuration: Supports up to 320 W of photovoltaic-array power and 23 A maximum solar-charging current.

5. USB and DC Outputs

• Two USB Outputs: Provides two 5 V DC / 1 A USB charging outputs for compatible portable devices.
• Four 12 V DC Outputs: Provides four 12 V DC / 1 A connections for compatible low-power DC equipment.
• Multiple Output Options: Combines AC, USB and 12 V DC outputs in one compact off-grid unit.
• Load Verification: The combined connected load must remain within the applicable output ratings.

6. Protection and Thermal Management

• Battery Undervoltage Protection: Helps prevent excessive battery discharge.
• Overcharge and Overcurrent Protection: Protects the charging and power-conversion circuits against applicable abnormal conditions.
• Lightning Protection: The supplier lists lightning protection among the integrated protective functions.
• Cooling Fan: Provides active cooling during operation.
• Overtemperature Protection: Supports automatic recovery after the operating temperature returns to an acceptable level.

7. B2B Applications

The inverter is suitable for off-grid equipment distributors, small solar-system integrators, backup-power suppliers and installers of low-power standalone systems. Typical applications include small residential backup systems, cabins, outdoor facilities, lighting systems, monitoring equipment and other locations requiring limited AC and DC power from a 12 V battery and solar array.

PV module selection, battery capacity, connected loads, cable size, fuses and installation conditions must be confirmed before use.