Smart 50A MPPT Solar Charge Controller - Lightweight 0.66 lbs IP68 Waterproof 12V/24V/48V Lithium Batteries Systems Mix&Match Different Solar Panels SolexBrick S1

- [Compact Size, Flexible Installation] Measuring just 1/6 the size of traditional controllers, it can be mounted directly behind a solar panel or neatly stored in a solar suitcase. This saves critical space in your RV, van, or overland rig. - [Smarter Charging with Advanced Tech] Powered by next-gen MPPT, Quad-Channel, and InstantMax AI tech, it auto-adapts to 12/24/48V battery systems. This enables intelligent solar charging while actively optimizing battery lifespan. - [Mix Panels Without Compromise] The SolexBrick S1 solves the issue of efficiency loss from mixing different brands, wattages, or types of panels. You can freely combine various solar panels and achieve a fully optimized connection to your battery without extra controllers. - [Effortless 3-Step Plug & Play Setup] Simply connect using the MC4 to O-Ring cable (available separately or DIY per the guide) to ensure a secure, error-proof connection to your battery, eliminating the risk of shorts or loose wiring. Designed for effortless setup by anyone. - [Rugged & Reliable Built for Safety] Designed for LiFePO4 batteries, it features smart temperature compensation (-40°F to 149°F) and comprehensive lithium protection. The IP68-rated shell offers total dust and water resistance, making it essential for storm-prone RV/marine.

Product description

OptiSolex SolexBrick S1

Built for Mobility Off-Grid Power Systems

Effortless Portable Solar Expansion

Just plug and play.

Effortless Portable Solar Expansion

Future-Proof Mountable Solar Expansion

Future-proof from day one.

Future-Proof Mountable Solar Expansion

Anti Shadow Optimization

Independent Optimization, Uninterrupted Power.

Anti-Shadow Optimization

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

Why is correct polarity and correct port connection important?

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

Why does the SolexBrick S1 feel hot during operation?

What type of battery is compatible with the SolexBrick S1?

OptiSolex 440W SolarBag Kit gives you instant solar expansion-no roof space required. Just plug into the S1 controller and connect directly to your battery. No mounting, no rewiring, no extra charge controller needed.

With the S1 as your controller, adding more rigid panels later is a breeze: just plug in another S1 to expand-series or parallel, no hassle, no rebuild, more power.

Unlike traditional controllers that let one shaded panel slow the entire system, the SolexBrick S1 independently optimizes each one. This ensures the rest keep producing at 100% power, maximizing your daily energy harvest.

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