Pure Sine Wave Inverter/Charger with UPS, 300 W, 12 V, 25 A, LCD

This 300 W pure-sine-wave inverter/charger supplies 220Vac / 230Vac / 240Vac from a 12VDC battery, charges the battery at up to 25 A and provides a 5ms AC bypass transfer in UPS mode. The LCD shows input, output, load, battery, temperature and operating-mode information.

Input and output

• Continuous output power: 300 W. Output waveform: pure sine wave.
• Nominal AC input: 230 V. Input range: 120–275 V AC. Low transfer: 120 V AC ±2%; low return: 130 V AC ±2%. High transfer: 285 V AC ±2%; high return: 260 V AC ±2%.
• Input frequency: 50 Hz; accepted range 45–70 Hz.
• Selectable output: 220Vac / 230Vac / 240Vac. Battery-mode voltage regulation: <3% RMS across the battery-voltage range. Output frequency: 50 Hz ±0.1 Hz. Efficiency: >85%. Power factor: 0.8.
• Maximum-load specification: up to a short-circuit condition. Maximum asymmetrical load: up to nominal output power. Overload and short-circuit protection disconnects automatically; an audible warning sounds before overtemperature shutdown.

Battery, display and alarms

• Battery system: 12VDC, operating range 10.5~14.3VDC. Maximum charging current: 25 A.
• LCD: inverter state; input and output voltage and frequency; load percentage; battery voltage and percentage; temperature and mode.
• LED indicators: normal green, warning yellow and fault red.
• Audible alarm: every 4 seconds in battery mode, every second for low battery, and twice per second for overload.

General and physical data

• AC bypass transfer in UPS mode: 5ms.
• Operating temperature: -20°C to +55°C. Noise: <55dBA at 1 m. Relative humidity: 0–95%, non-condensing.
• Dimensions (mm): 320*130*190. Weight: 9 kg. Inner box size (mm): 420*230*300.