What Is the CoolMax SRX?

Key Features

• Industry leading MPPT tracking algorithms
• Passive thermal design no fans no moving parts
• Full compatibility with LiFePO4 and traditional battery types
• Robust long life engineering

This unit is a favourite among professional off grid system designers and installers, especially in harsh Australian climates.

Designed and Built in Australia

• Designed for Queensland’s heat, humidity, and dust
• Local warranty support and service from AERL’s Brisbane facility
• Fully compliant with Australian standards and safety codes

When your property is 200 km from the nearest hardware store, it pays to invest in equipment that’s made for the terrain and backed by a team that knows it.

Smart MPPT Tracking for Maximum Efficiency

The heart of the CoolMax SRX is its real time digital MPPT tracking engine, which continuously monitors the optimal voltage and current balance from your solar array.

• Responds dynamically to changing light and load conditions
• Optimises panel output throughout the entire day
• Delivers up to 99 percent energy conversion efficiency

This means more usable solar power, especially in marginal or partly cloudy conditions common in the hinterland and inland Queensland.

Passive Thermal Cooling

Unlike many cheaper charge controllers that rely on internal fans which can fail over time, the CoolMax SRX features a passive thermal design using a high surface area heat sink.

• Eliminates moving parts that collect dust or break down
• Operates silently ideal for homes cabins or remote work sites
• Remains efficient even in 40 degree plus Queensland summers

It is also designed to de rate gradually in extreme heat rather than shutting down, so your system keeps working even when conditions get tough.

Battery Charging Flexibility

Battery health is everything in an off grid setup. The CoolMax SRX is fully compatible with

• Lithium Iron Phosphate LiFePO4
• AGM Gel Flooded Lead Acid
• Custom charge profiles via configuration tools

This flexibility allows you to

• Tailor charging voltages and absorption times
• Set low temperature cut offs important for lithium banks in winter
• Maximise battery lifespan and performance

Whether you’re running a small homestead system or a full scale rural power setup, the SRX delivers reliable precise battery charging day in and day out.

Ideal for Off Grid Solar in Queensland

At Stand Alone Power Systems we’ve worked on off grid installs across

• South Burnett and Wide Bay Burnett
• Lockyer Valley and Gympie
• Sunshine Coast Hinterland
• Western Queensland
• Scenic Rim and remote stations

In these locations your MPPT needs to be

• Dust proof and heat tolerant
• Able to handle long cable runs and mixed panel orientations
• Low maintenance with no unnecessary complexity

The CoolMax SRX fits the brief. Whether installed in a battery shed, under a pole mounted system, or integrated with Selectronic and Victron gear, it performs reliably year after year.

Backed by Local Support and Warranty

• A solid manufacturer warranty
• Optional extended support programs
• Access to trained local technicians and configuration tools

In a field where trust is everything, local support matters — especially when the system is hundreds of kilometres from the nearest town.

Why We Recommend the CoolMax SRX

The CoolMax SRX by AERL isn’t just a premium choice — it’s a practical one. It’s reliable, Australian made, thermally robust, and compatible with the modern battery chemistries we recommend. At Stand Alone Power Systems, we trust it because it works.

Want Help Designing the Right System

We’ll help you choose the best MPPT, battery bank, inverter, and solar layout — all tailored for your lifestyle, property, and long term goals.

• 📱 0428 678 513
• 📧 mark@standalonepower.com.au
• 🌐 Download Datasheet