For distributors supplying compact off-grid solar systems, the SY-J Series 10A-30A PWM solar charge controller is designed for common 12V and 24V battery applications where buyers need simple operation, clear display information and flexible model choices for different current levels.
Main Product Features
The SY-J series includes SY1024J 10A, SY2024J 20A and SY3024J 30A models. Each model supports 12V/24V automatic system voltage recognition, making the series easier for wholesalers to stock when serving both small 12V users and slightly larger 24V systems.
Key features include adjustable charging settings for lead-acid, LiFePO4 and lithium-ion battery applications, an LCD display, a 5V/0.8A USB output, manual load switching and load delay shutdown up to 24 hours. The controller uses a black plastic housing with an aluminum heat sink base, helping it stay practical for everyday small-system installations.
Suitable Application Scenarios
The SY-J series is suitable for solar lighting systems, small rural power kits, garden or yard solar power, monitoring equipment, small DC load systems and basic household off-grid battery charging. For many importers and distributors, this current range is useful because it covers frequent entry-level solar controller demand without requiring a large or expensive unit.
The 10A model can support smaller lighting or maintenance systems, the 20A model fits broader daily-use small solar kits, and the 30A model gives extra margin for customers with higher panel current or heavier DC load requirements.
Selection Notes for Wholesale Buyers
Buyers should choose the model according to charging current, battery voltage and load requirement. The PV open-circuit voltage should remain within the 50V limit, and the charging parameters should match the battery supplier’s recommendations.
For markets where customers may use different battery types, distributors should prepare clear product guidance so installers select the correct battery setting. This reduces after-sales questions and helps protect both the controller and battery system.
Installation and Procurement Considerations
For installation, the battery should be connected first, followed by the PV panel and then the DC load. Correct polarity, cable size, ventilation and protection from rain or heavy dust are important for stable operation.
For bulk orders, buyers can prepare the required current mix, battery type, packaging language, quantity and destination market. Gerixi can support model confirmation and supply coordination for distributors who need a compact PWM controller line for 12V/24V solar applications.
