This review delves into the Bateria Power Sunrock 20 20-amp MPPT solar charge controller, a compact and surprisingly powerful device designed for portability. We explore its ease of setup, thanks to included adapters and intuitive instructions, and assess its performance under real-world testing conditions using a 12V battery and 100W solar panels. Key features examined include its waterproof design, multiple battery type settings, and robust over-voltage protection. A direct comparison with a competitor highlights its superior charging efficiency and amperage output.The Sunrock 20's small size and user-friendly interface are particularly noteworthy, making it suitable for various applications like RVing, boating, and other outdoor adventures. This review meticulously examines its performance across different voltage levels, analyzing both its strengths and limitations, ultimately providing a comprehensive evaluation of its capabilities and suitability for diverse solar power setups. We'll assess whether its compact size compromises power, and explore its value proposition within the competitive landscape of portable solar charge controllers.
Pros And Cons
- Small and portable
- Waterproof
- Includes SAE adapters and polarity reverser
- Competitively priced
- Bluetooth capabilities (with app for data logs)
- Easy to set up
- Detailed manual
- Over-voltage protection (E10 error code)
- Good tracking and response time
- Low Vocc (30V open circuit max on 12V)
- 30V limit may result in voltage drop over long wires
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Unboxing and Initial Impressions
The Bateria Power Sunrock 20 20-amp solar charge controller arrived in compact packaging, clearly displaying its specifications. The unit itself is remarkably small, easily fitting in the palm of your hand. This portability is a significant advantage for outdoor applications.
Included in the box were a quick start guide, manuals, and SAE to MC4 adapters – all the essential components for quick setup. The controller’s waterproof design is also a welcome feature for use in various weather conditions.
Included Accessories and Connections
The package included SAE adapters and a polarity reverser, enhancing setup flexibility. Pre-made MC4 to SAE connection kits are also available separately, catering to different user preferences and skill levels.
This eliminates the need for users to create their own connections if they lack the equipment or expertise. The inclusion of these extras demonstrates Bateria Power's commitment to user-friendliness.
Testing the Charge Controller
The controller was tested using a 12V battery and two 100W solar panels connected in parallel to stay within the controller’s voltage limits. The panels were positioned for optimal sunlight exposure, although conditions weren't ideal.
Extension cables and connectors were used to link the panels to the controller and battery, ensuring safe and efficient power transfer. The test aimed to evaluate charging performance under real-world conditions.
Performance and Functionality
The controller quickly recognized the battery and displayed the correct voltage. The charging process began immediately, with current readings shown on both the controller and the battery's smart BMS display.
While there was a slight discrepancy between the two displays, overall performance was impressive. The charge controller accurately tracked the power from the panels, efficiently charging the low-voltage battery.
Settings and Adjustments
The controller offers various settings for different battery types, including lithium iron phosphate, gel, and AGM. Changing between these settings is straightforward, using the controller's intuitive interface.
Setting the controller to the correct battery type ensures optimal charging parameters, maximizing battery life and performance. This user-friendly interface is a key feature of the Sunrock 20.
Comparison with a Competing Brand
A quick comparison with another 20-amp MPPT controller revealed that the Sunrock 20 outperformed the competitor. The Sunrock 20 consistently delivered higher amperage and wattage under the same conditions.
This suggests that the Sunrock 20 is more efficient at tracking maximum power point and delivering power to the battery compared to the competing brand. This real-world testing demonstrates the controller's superior performance.
Maximum Power and Over-Voltage Protection
Testing the controller at its maximum voltage limit of 30V revealed its ability to handle high input power. At 35 volts, the controller maintained 20 amps. This highlights its robust design and capacity for handling substantial power.
However, exceeding 40V triggered an E10 error code, demonstrating the effective over-voltage protection mechanism. This protection prevents damage to the controller in case of unexpected voltage spikes.
Final Thoughts and Conclusion
The Bateria Power Sunrock 20 is a compact, waterproof, and surprisingly powerful charge controller ideal for portable applications like RVing, boating, and outdoor adventures. The small size and Bluetooth connectivity are added bonuses.
While the low 30V open-circuit voltage might be a limitation for larger off-grid setups, its performance and features make it an excellent choice for smaller systems. The price point is competitive, and the robust build quality ensures longevity.
