1. The function of the solar energy function is different, and the price is different. For example, the home system controller of Olympus Technology has LED display controller working status, and LCD digital display solar energy system working status. Relatively speaking, the controller with LCD display is more expensive than the controller with LED display, and the cost is different.

2. The maximum charging and discharging current of the solar controller is different, and the price is different. For example, the price of a 10A controller and a 60A controller is very different. The 60A controller bears a large current, so when designing, the number of MOS tubes should be increased, and the radiator should be enlarged to withstand a larger current.
3. The charging method of the solar controller is different, and the price is also different. The switch-type controller is cheaper than the PWM solar controller, and the MPPT maximum power tracking solar controller is much more expensive than the PWM charging solar controller.
4. The choice of components is also related. Some manufacturers choose electrical components with poor precision, the price will be cheaper, but the service life will be short.