You can get the most advanced features, such as digital display, mains bypass switch, and MCB security, all at an affordable price. The Zelio connected inverter series includes 2 power inverter series, a) Zelio Wi-Fi b) Zelio- i According to Ohm's law, current is inversely proportional to voltage, but the PWM solar controller does not do anything to the current. Once the high voltage from the solar panel is converted into usable 12 volts, the output current will be equal to or less than the input current. The large-capacity inverter is equipped with an advanced digital display that can inform you of the performance statistics of the inverter and the battery. The large-capacity power inverter also provides additional functions, such as AC and DC MCB switches, mains bypass switches, short circuit protection, battery overcharge, and deep discharge protection facilities. Solar charge controller introduction. The solar charge controller is also called It is a solar charge and discharge controller. It is used in solar power generation system to control the multi-channel solar battery array to charge the battery and also control the battery to supply power to the solar inverter load.