Your computer and air conditioner may need such an inverter. Commercial appliances feel safe to use highquality inverters: STATIC inverters. Therefore, the result is to provide the purest AC power for heavy and demanding equipment in office spaces and commercial areas (such as elevators and air conditioners) while minimizing noise pollution. When the sun is strong, the output power of the photovoltaic cell increases significantly, the charging current will soon reach the threshold, the MPPT charging is stopped, and the constant current charging mode is switched. When the sunlight becomes weak and it is difficult to maintain constant current charging, switch to the MPPT charging mode and switch freely until the battery side voltage rises to the saturation voltage Ur, and the battery enters the constant voltage charging stage. By combining the MPPT charging method with the constant current charging method and automatic switching, the solar energy can be fully utilized to quickly charge the battery. The pure sine wave AC output is clean and distortionfree. When your equipment and electrical appliances only need pure sine wave current, using an improved sine wave inverter may cause harm. Therefore, although it looks expensive, a pure sine wave power inverter can save you a lot. "Easy to heat" appliances such as microwave ovens and motors keep cool on pure sine wave inverters. However, as you know, the waveform formed by this inverter is a square step shape in descending and ascending order. Therefore, the AC output is not noisefree and the purest. However, you can use these types of inverters for certain appliances, although it will reduce the performance and service life of the equipment/appliances. The following is how the modified sine wave inverter affects the performance of the device, although it is cheaper. Tubular batteries are more durable than flat batteries and usually have a longer warranty period.