How do I connect multiple solar panels to my system? Should I use a serial or parallel configuration?

S1 supports parallel or series. No quantity limit in parallel, series: up to 3 S1 in series at the same time. As long as it's under 50V&450W.

Please note: The S1 isn't compatible for series connection with other types of controllers.

Why is correct polarity and correct port connection important?

To prevent irreersible damage to your SolexBrick S1, please always double-check the positive/negative terminals and ensure you are connecting to the correct ports.

Short cable → Solar panel input

Long cable → Battery Output (via extension cable)

Why is the initial charging power so low when I first connect the system?

This is completely normal. During the first 3 minutes, the system performs an initialization and self-check, allowing only a small current to flow. After that, it will automatically enter MPPT mode and deliver normal charging performance.

Why does the SolexBrick S1 feel hot during operation?

If the solar input reaches around 350W, the device’s temperature may rise to 60–70°C. This is within the normal operating range.

Please avoid touching metal surfaces during high-power operation to prevent discomfort or burns.

What type of battery is compatible with the SolexBrick S1?

The SolexBrick S1 works only with LiFePO4 (Lithium Iron Phosphate) batteries.

Please make sure the connected battery is a LiFePO4 battery, is not damaged, and is functioning