The inverter is inseparable from the battery. The working time of the inverter is related to the capacity of the battery.
Introduce a formula so you can calculate how long the battery connected to the inverter will last.
Battery capacity ÷ (inverter power Xwatt ÷ battery volts 12V or 24V×110%) = battery working time
If the battery is 12V 120Ah,connect 1000Watt inverter↓
120Ah÷（1000W÷12V×110%）=78mins
So a 12V120Ah battery connected to a 1000W inverter can work for about 78 minutes
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![[inverter]](http://img.staticdj.com/5dc7521784e8c44a5c2e5fdb22013198_{width}x.jpg)
![[inverter]](http://img.staticdj.com/29e0e7dad5f92ba624537fc5e74626f3_{width}x.jpg)