The 3229 Series’ most distinctive feature is its dedicated adaptation for 3.2V LiFePO₄ batteries. Compared to traditional lead-acid batteries, LiFePO₄ offers longer cycle life (2,000+ cycles), higher energy density, and superior safety — making it increasingly popular in off-grid lighting, portable energy storage, and solar street light applications.
According to product specifications, the 3229 Series supports 3.2V battery systems, with a maximum charging current of 15A, maximum load power of 30W, LED output voltage range of 9V to 36V, and maximum solar open-circuit voltage of 25V. The entire series achieves IP67 protection rating, capable of withstanding outdoor moisture, dust, and harsh environments.
The 3229 Series offers three model configurations to meet different application requirements:
3229-M: The base MPPT charging model, focused on efficient charge management — ideal for off-grid lighting scenarios that do not require additional communication features.
3229-G: Based on the 3229-M, this model adds support for an External Induction Module, enabling induction control functions — suitable for lighting scenarios requiring human presence or light-sensing control.
3229-2.4G: Based on the 3229-M, this model adds 2.4G wireless communication and supports an optional external IOT module, enabling remote monitoring and intelligent management — ideal for distributed lighting projects requiring centralized control.
Additionally, the 3229 Series supports infrared communication (Infrared/Microwave) and external IOT modules (CTAI-1 / IOT-4G / IOT-4GWG optional), providing flexible communication expansion capabilities for different scenarios.
High-efficiency MPPT tracking. The 3229 Series employs high-efficiency MPPT maximum power point tracking technology with a tracking efficiency greater than 99.9% , effectively improving system efficiency and reducing system costs. Compared to traditional PWM controllers, MPPT technology can improve charging efficiency by 20% to 30%, with the advantage particularly pronounced under rapidly changing light conditions.
Industrial-grade MCU full-digital control. The product adopts industrial-grade MCU full-digital control technology, offering high precision and strong anti-interference capability. The system automatically adjusts lighting power based on the actual capacity of the solar panel and charging power, ensuring the luminaire operates properly 365 days a year.
Intelligent charge/discharge management. The controller provides clear charge/discharge status indication and fault indication, with adjustable light-control voltage points. It supports multiple protection functions including battery reverse connection protection, output short-circuit protection, and solar panel reverse connection protection.
Step-up constant current LED driver. With an LED output voltage range of 9V to 36V, the controller can boost the low voltage of a 3.2V battery to the operating voltage range required by LED strings, delivering constant current output that ensures consistent driving conditions for the LED string regardless of battery state of charge — preserving both illumination quality and luminaire longevity.
Rugged and durable design. The all-aluminum housing provides excellent heat dissipation; the internal full-potted silicone process achieves IP67 waterproof rating, ensuring stable operation under high temperatures, humidity, dust, and various harsh environments.
With its 3.2V LiFePO₄ system, 15A charging, 30W load, 9V-36V step-up constant current driver, and IP67 protection specifications, the 3229 Series offers distinct advantages in the following application scenarios:
Off-grid lighting in Africa and Southeast Asia: In areas with inadequate grid coverage, small solar lighting systems are a basic daily necessity. The 3229 Series‘ 3.2V LiFePO₄ compatibility, step-up constant current driver capability, and IP67 protection rating align perfectly with the small solar home lighting and portable lighting devices prevalent in these regions.
Solar street lights and courtyard lighting: The 30W load capacity adequately covers small-to-medium power lighting scenarios such as rural roads, courtyards, and campus pathways. IP67 protection ensures long-term stable operation outdoors.
Small-scale security surveillance power in remote areas: Paired with small solar panels and LiFePO₄ batteries, the 3229 Series can provide independent nighttime auxiliary lighting and power supply for surveillance points.
Distributed lighting projects requiring remote management: The 3229-2.4G model supports 2.4G wireless communication and optional IOT modules, making it suitable for batch lighting projects requiring centralized monitoring and remote management.
The Sukite 3229 Series 3.2V MPPT solar charge controller, with its integrated design combining “3.2V LiFePO₄-specific charging + step-up constant current LED driving + IP67 protection,” precisely addresses the core needs of the off-grid lighting market. The differentiated configurations across three models provide users with flexible options ranging from basic charging to intelligent remote management.
For system integrators and contractors planning off-grid lighting, portable solar devices, or small-scale security power supply projects, the 3229 Series offers a practical pathway to simplified system design, reduced overall costs, and enhanced operational reliability.
Model: Sukite 3229 Series 3.2V MPPT Solar Charge Controller (3229-M, 3229-G, 3229-2.4G)
Core Functions: MPPT Maximum Power Point Tracking + 3.2V LiFePO₄-Specific Charging + Step-Up Constant Current LED Driver (9V-36V) + IP67 Protection
Target Applications: 3.2V LiFePO₄ Off-Grid Lighting Systems (≤30W Load)
Key Specifications: Max. Charging Current 15A / Max. Solar Voc 25V / Max. Load Power 30W / IP67 Protection
Dimensions: 100×82×25mm / Weight 290g
Manufacturer: Dongguan Sukite New Energy Lighting Co., Ltd. (Sukite)
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