A dual output MPPT (Maximum Power Point Tracking) solar charge controller is a device that allows you to charge two separate battery banks using power from a single solar array. This type of charge controller offers several advantages over a traditional single-output MPPT charge controller:

• Increased flexibility: With a dual output MPPT charge controller, you can charge two separate battery banks using the same solar array. This allows you to separate your power storage for different applications or usage, such as one bank for lighting, another for propulsion, etc.

• Improved system efficiency: By using a dual output MPPT charge controller, you can optimize the charging of each battery bank separately. This can result in a more efficient overall system, as the charge controller can optimize the charging of each bank individually, rather than trying to charge both banks at the same time.

• Safety and balance: Dual output MPPT charge controllers are useful when you have different types of battery with different characteristics, like one lead-acid and one lithium-ion battery bank. By having separate charging channels, it will prevent mismatches in voltage and charging current, which can be a safety hazard for the system.

-Advanced monitoring and control: dual output MPPT charge controller also offer advanced monitoring and control, you can monitor and adjust settings for each battery bank separately, this allows you to keep track of the charge status and power usage of each bank and respond accordingly.

• Cost-effective solution: With a dual output MPPT charge controller, you can charge two battery banks with a single solar array, rather than having to purchase and install separate arrays for each bank. This can result in significant cost savings.

Overall, a dual-output MPPT solar charge controller offers several advantages over a traditional single-output controller, including increased flexibility, improved system efficiency, and cost savings. Its ability to charge two separate battery banks separately can be particularly useful in off-grid or grid-tie solar power systems, or in applications where multiple battery banks are used, like RV or boat, where you can separate power usage and keep the balance of the battery banks.

These dual-battery solar controller uses advanced MPPT technology to charge two independent batteries or battery banks. The main battery is charged at high power, while a secondary battery is given a trickle charge of up to 1A. This makes it a perfect solar controller for a campervan, motorhome, boat or any other system with 2 batteries (e.g. engine and leisure battery). The main battery will be charged with a majority of the power, whilst the second battery will be trickle-charged to keep it topped up and ready for use.