I like how easy it was to install with no tools required. It's very compact in size but still has enough capacity for our needs (about 3kW). We have been able to charge from solar panels without any issues. There are some minor quirks here or there, such as when we try to run multiple units at once, sometimes one will not turn off until after another unit turns back on. But this can be fixed by powering down all of them before turning back on again. Overall, this product works well for us and it is an excellent value! It does what we need it to do - store excess electricity generated during peak times and then release it later into the grid.