Choosing Between a 1000W and 2000W Renogy Inverter: What Do I Need?

You can use a 2000W inverter, but remember it will drain your 80Ah battery quickly if you push it to capacity. If you only run lower wattage devices, it might work, but it’d take a long time to recharge with just one 100W panel. If you plan to expand your system later, going for the 2000W might be a good move as it gives you more flexibility, but ensure to upgrade your solar capacity and batteries too!

There are mixed reviews on Renogy's inverters specifically; I came across a cheaper option from MWXNE that's pure sine wave and works great. Just make sure to calculate wattage for all devices properly. And remember, inefficiencies will make your usage and recharge times longer than you expect. It might be smarter to start with fewer high-watt devices until you can expand your solar setup!

Before deciding on the inverter size, take a look at how much power your garden lights and fountain pump actually use. For instance, if those lights use about 15W each and the fountain requires around 80W, that's a total of 110W. You might not need such a big inverter for that unless you plan to add more devices. Also, keep in mind how much power your battery can handle and how long you want it to run everything. A smaller inverter could be sufficient if your total power usage is low.