The safest way to turn it off is to use the software operating system and shut it down using the charge panel, which will take a few minutes; unless you have to wait for any update processes to complete their task. Identify the solar charging system type, 2. Secure the system to prevent. For instance if you have a PV inverter or not, if the batteries have a built-in on/off switch or not, if you have individual disconnects (for inverter, for charger, etc. For a DC coupled system connected to the grid (ESS), I would do something like this: - turn off all AC. These types of solar panel circuit equipment units will have a few ways to turn off the unit, similar to computers there will be the option to unplug the controller from the wall, breaking the circuit. Another way you can turn the unit off is to use the switch. Depending on models and brands of. Can the SmartSolar controllers be damaged by leaving them turned off using the Victron connect settings? The user manual and app semm to be pretty adamant that the off setting is for "maintenance only". Always refer to the manufacturer's manual for specific guidelines as procedures may vary between models. After. A solar inverter, also known as a PV inverter, is a type of power inverter that converts a photovoltaic (PV) solar panel's variable direct current (DC) output into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical.