We spent a long time studying the issue of purchasing solar panels. We decided on the store. This seller has solar batteries https://www.fortresspower.com/es/comparing-the-top-home-battery-storage-technologies-2020/ of the same manufacturers much cheaper than on other resources. This store has been operating in our market for 10 years and the guys want their goods to be taken. That is why such a loyal pricing policy. They gave us a warranty on the batteries, they were well packaged and delivered quickly.