From 1.3kW to 12kW, here are the 9 best off-grid inverters of 2023: 1. 1.3kW VICTRON ENERGY EASYSOLAR 12/1600 2. 3kW. The best-off grid inverters are all-in-one solutions. They combine three essential parts in a pre-wired configuration: 1. An MPPT solar charge. In this article, we introduced 9 best off-grid inverters from 1.3kW to 12kW. They are all-in-one solutionswhich come prewired so that you only need to connect your solar panels and your battery bank to complete your system. With the best off-grid inverters it is. You don't need to be a specialist to choose the best off-grid inverter. We've selected the most relevant specifications to look at: 1. Inverter power output 2. Battery charger.