20a 12v/24v Solar Change Controller

This stands for “Pulse Width Modulation”. These operate by making a connection directly from the solar array to the battery bank. During bulk charging, when there is a continuous connection from the array to the battery bank, the array output voltage is ‘pulled down’ to the battery voltage. As the battery charges, the voltage of the battery rises, so the voltage output of the solar panel rises as well, using more of the solar power as it charges. As a result, you need to make sure you match the nominal voltage of the solar array with the voltage of the battery bank. *Note that when we refer to a 12V solar panel, that means a panel that is designed to work with a 12V battery. The actual voltage of a 12V solar panel, when connected to a load, is close to 18 Vmp (Volts at maximum power). This is because a higher voltage source is required to charge a battery. If the battery and solar panel both started at the same voltage, the battery would not charge.
Designed with load light and timer control, you can set the load working time from 0 Hour ~ 24 Hours.
Build-in-short-circuit protection,open-circuit protection,reverse protection, over-load protection.
Intelligent PWM Charging Mode
Compact and lightweight, portable and convenient to use.

Descriptions:
Auto temperature compensation.
Digital display, charge and discharge parameter can be adjusted, with power off memory function.
Reverse current protection, low heat production.

Specifications:
Voltage: 12V/24V auto
Current: 20A
Material: plastic and metal

• Large back light LCD screen is easy to read.
• Designed with load light and timer control you can set the load working time from 0 Hour ~ 24 Hours.
• Build-in-short-circuit protection-open-circuit protection-reverse protection over-load protection.
• Intelligent PWM Charging Mode
• Compact and lightweight portable and convenient to use.
• Descriptions:
• Auto temperature compensation.
• Digital display charge and discharge parameter can be adjusted with power off memory function.