... 280v 2. output pure sine wave:220V+-3% 3. built-in charger with 10A--30A charging current Features :1) completely controlled by ... low-voltage input protection, over-voltage input protection,5) with built-in charger with 10A--30A charging current, 6) output pure sine wave ... the voltage, one step to recrease the voltage,9) with high transfer efficiency ,we can make our inverter transfer efficiency ...