PowMr offers MPPT Solar charge controllers,inverter chargers and solar related products.Innovative structural design makes the controller installation safer and more reliable. The main types are ordinary type, economic type, 12V/24V self-contained type, MPPT type, App control type, high power type, 48V type. 2. Solar street lamp controller. Mainly used for solar street lamps, installed on the pole or lamp holder. This kind of street light controller is usually a fully sealed metal casing. The solar street light controller can automatically control the on/off and lighting time according to actual needs. When considering which MPPT controller to choose, please refer to the MPPT controller calculation guide above. powmr has the best MPPT solar charge controller sold in 2020. To choose the best 60 amp MPPT solar charge controller, please refer to this guide. Best 30 Amp MPPT Charge Controller Reviews In general, the price difference of small amps is not amplified by big ears. The price difference between MPPT controller and PWM controller jumps after 30 amps. MPPT charge controller prices range from US$70 to US$1,000 and are very common in the market. In addition, there are many amorphous silicon solar panels on the market. One characteristic of this panel type is high open circuit voltage and low current. This kind of panel works better with MPPT controller. MPPT charge controller is most suitable for professional owners who need a controller to complete heavy tasks (home power supply, RV solar, boat, hybrid solar and off-grid power station). Due to its powerful features, it can save you money by reducing other costs.