The following calculations assume you have a high quality inverter that can draw maximum power. If not, we recommend this 2000W inverter by Renogyas it works well with solar panels and deep cycle batteries. To calculate inverter amp consumption, divide the inverter load by its voltage. An inverter will keep running as long as there is a power source. If the inverter is hooked up to an electric outlet, it will run continuously. If the. To run a 2000W at maximum power, it requires 2 x 100ah deep cycle lithium batteries. We recommend theVatrer 100ah LiFePO4 since it is one of the most dependable deep. There are a lot of appliances you can run. Fans, TVs, laptops, several lights, etc. You can also run a refrigerator with a 2000W inverter. Some more examples: 1. Microwave 1000-2000W 2. 50 inch TV 50W 3. Laptops 200W 4. Freezer 600-700W 5. Coffee.