VT Series PWM Solar Charge Controller – 30A / 40A / 60A, 12V/24V/36V/48V, Lead-Acid & Lithium

📋 Overview The VT Series PWM Solar Charge Controllers are a heavy-duty upgrade for off-grid solar systems, regulating power between your solar array and battery bank to protect against overcharging. Unlike our standard-line controllers, the VT Series charges both lead-acid (Gel, Sealed, Flooded) and lithium (LiFePO4, LiConMnNiO2) batteries with user-defined parameter support, accepts up to 100V of solar input, and is built with a larger housing and heavier terminals for demanding installations. Choose from three current ratings — 30A, 40A, or 60A — to match your system size. ⭐ Key Features & Benefits Dual Battery Chemistry Support — Charges lead-acid batteries (Gel, Sealed, Flooded) and lithium batteries (LiFePO4, LiConMnNiO2), with user-defined charging parameters for both. Wide Voltage Compatibility — Supports 12V, 24V, 36V, and 48V battery banks. 12V, 24V, and 48V are auto-detected; 36V systems are set manually. High Input Voltage — Accepts solar array input up to 100V open-circuit voltage, so you can wire more panels in series. Backlit LCD Display — Easy-to-read status and settings screen, even in low light. Quad USB Charging Ports — 4× USB outputs at 5V/2A each (2 per side) for charging phones, tablets, and other devices directly from the controller. Rugged Mounting — Metal mounting lugs on both sides for secure wall or cabinet installation. Heavy-Duty Terminals — 6 large-aperture terminal blocks with wider spacing accept thicker cable (6AWG for 30A/40A models, 4AWG for 60A model) for high-current wiring. Superior Heat Dissipation — Larger housing and bigger heat sink keep the controller stable under extended full-load operation in high heat. 📊 Specifications Available Models VT40-30A / VT40-40A / VT60-60A Rated Charge Current 30A / 40A / 60A (select at checkout) Rated Discharge Current 20A (30A & 40A models) / 30A (60A model) Max PV Open Circuit Voltage <100V System Voltage 12V/24V/48V (Auto) / 36V (Manual) PV Max Input Power @ 12V 390W / 520W / 780W PV Max Input Power @ 24V 780W / 1040W / 1560W PV Max Input Power @ 36V 1170W / 1560W / 2340W PV Max Input Power @ 48V 1560W / 2080W / 3120W Charging Control Mode PWM Battery Types Supported GEL / Sealed / Flooded / User-Defined Lead-Acid / LiFePO4 / LiConMnNiO2 / User-Defined Lithium Float Charge Voltage 13.8V / 27.6V / 41.4V / 55.2V (12V/24V/36V/48V) Absorption Charge Voltage 14.4V / 28.8V / 43.2V / 57.6V (12V/24V/36V/48V) Equalization Charge Voltage 14.6V / 29.2V / 43.8V / 58.4V (12V/24V/36V/48V) USB Output 4× USB, 5V/2A each (2 per side) Display Backlit LCD Load Control Modes 24-Hour, Light Control, Reverse Light Control, Light + Dual Time-Period Control Dimensions (L × W × H) — 30A / 40A Approx. 200 × 106 × 47 mm (7.87 × 4.17 × 1.85 inches) Dimensions (L × W × H) — 60A Approx. 200 × 132 × 62 mm (7.87 × 5.20 × 2.44 inches) Mounting Hole Spacing Ø5 mm (0.20 inches) 📦 What's in the Box 1× VT Series PWM Solar Charge Controller (select 30A, 40A, or 60A model) 📝 Note: Solar panels, batteries, mounting hardware, wiring, and fuses/breakers are not included and must be purchased separately. 🔋 Battery Compatibility Gel Batteries Sealed Lead-Acid Batteries Flooded Lead-Acid Batteries User-Defined Lead-Acid Parameters LiFePO4 Lithium Batteries LiConMnNiO2 Lithium Batteries User-Defined Lithium Parameters 🎯 Common Applications Off-Grid Cabins & Sheds — Manage battery charging for remote solar power systems. RV & Overlanding — Handle higher-wattage rooftop solar arrays on the road. Marine Solar Systems — Charge boat battery banks from deck-mounted panels. Backup Power Systems — Keep battery banks topped off for home or shop backup power. DIY Solar Projects — Flexible battery chemistry and voltage support for custom-built systems. 🚀 Getting Started Setting up the VT Series controller is straightforward: Connect the battery to the controller first, and confirm the LCD display turns on. Connect your load (lights, devices, etc.). Connect the solar panel last. Set the system voltage and battery type to match your battery bank. 💡 Tip: See our complete User Guide tab for the full connection sequence, battery/voltage setup instructions, model comparison, and troubleshooting tips. ⚠️ Important Notes The battery must always be connected first, before the load or solar panel — connecting a live solar panel to an unpowered controller can permanently damage it. 36V system voltage is not auto-detected and must be set manually. Lithium battery types must be manually configured — set the system voltage first, then select the matching lithium battery type. 📄 Documentation & Resources User Guide — Wiring sequence, battery & voltage setup, model comparison, and troubleshooting All Solar Charge Controller User Guides Sold and supported by Envistia Mall. Ships from the USA. For wiring diagrams, sample code, and troubleshooting, see the User Guide tab on this product page. The manufacturer and Envistia LLC (dba Envistia Mall) are not responsible for any damages or losses resulting from the use of this product. Always follow proper electrical safety practices when working with electronic components. Specifications are based on manufacturer data and are subject to change without notice.