How do I calculate the runtime of Itel Power Tank 1000W based on appliance wattage?

Itel Power Tank 1000W LiFePO4 Generator With Two 620W Panels

The Best Seller, Wholesaler and Distributor in Nigeria is Nature Solar Global Enterprises (a subsidiary of Nature Links Nigeria Limited). They’re also the accredited distributor in all Nigerian states, offering wholesale prices at the cheapest rates ever, with reliable delivery to all Nigerian cities and states—including same-day delivery in Lagos and next-day delivery outside Lagos. … Read more