Congsin 40A PWM Solar Charge Controller – Smarter Charging for Larger Off-Grid Solar Systems
Built for higher-capacity solar arrays, the Congsin 40A PWM Solar Charge Controller ensures stable, safe, and efficient charging for 12V or 24V battery banks. It automatically adapts to system voltage and is ideal for RV battery banks, marine solar setups, and off-grid cabin solar kits.
Thank you for reading this post, don't forget to subscribe!🔧 Key Features & Functions
- 🔋 40A high-current charge capacity – suitable for solar arrays up to 480W (12V) / 960W (24V)
- 📊 LCD digital display – real-time voltage, current, and load data at a glance
- 🔌 Dual USB 5V outputs – directly charge phones, LED lights, or small electronics
- ⚡ Full electronic protection – short circuit, reverse polarity, over-voltage, and thermal protection
- 🔄 Automatic voltage recognition – auto-detects 12V or 24V systems without manual setting
- 🧊 Better heat dissipation – enhanced casing with ventilation slots
📦 Practical Use Cases
- 🚐 RVs with medium-to-large solar arrays and 12V appliances
- 🛥️ Marine setups with onboard 24V battery banks and lighting systems
- 🏕️ Off-grid cabins requiring lighting, battery charging, and phone USB output
- 🔋 Backup battery systems for garage, workshop, or small homesteads
- 🛠️ DIY solar kits and OEM brands targeting Amazon or eBay resale
📐 Technical Specs
- Rated Charge Current: 40A
- System Voltage: 12V / 24V (Auto Detection)
- Max PV Input Voltage: < 50V
- USB Output: 2 x 5V/2A
- Idle Current Draw: ≤10mA
- Operating Temp: -20℃ to +60℃
- Certifications: CE / RoHS / FCC
🚀 OEM & Bulk Orders Welcome
Whether you’re a DIY installer, solar system reseller, or seeking private-label customization, Congsin provides OEM/ODM branding services for global buyers. Custom screen printing, bulk packaging, and retail box options available.
Get a quote or request a sample for your solar project today:
