The low frequency inverters Teca of Inti include pure sine wave and low frequency inverters with AC chargers from 35A to 70A, allowing to configure the device with AC priority or PV charge priority. When solar priority is set and the PV charge is lower than the grid's one, the AC current will deliver energy to charge the batteries and, thusd optimize the charging process. The Teca inverters from Inti have copper transformers incorporated, which makes them appropriate for all kinds of residencial applications.