The FT-M1240 is a robust solar charge controller designed for off-grid applications with automatic voltage detection and support for lead-acid and lithium batteries. With a 40 A current rating, built-in LCD display, and multiple protection features, it’s ideal for solar home systems, battery banks, and DC loads.

Specifications

• Controller Type: PWM (Pulse Width Modulation)
• System Voltage: Auto-detect 12 V / 24 V DC
• Rated Charge/Load Current: 40 A
• Battery Types Supported:
  • Sealed lead-acid (SLA)
  • Gel
  • Flooded
  • Lithium-ion (selectable)
• Max PV Input Voltage: ≤ 50 V DC
• Self-Consumption: ≤ 10 mA
• Display: Backlit LCD with status icons and settings menu
• Load Control: Manual / timer / light-sensing modes
• Protection Features:
  • Overcharge
  • Over-discharge
  • Reverse polarity
  • Short circuit
  • Overload
• USB Output: Dual 5 V / 2 A ports (optional on some variants)

Features

• Auto voltage detection for 12 V and 24 V battery systems
• Supports multiple battery chemistries including lithium-ion
• Real-time LCD display for voltage, current, and load status
• Multiple load control modes for lighting and automation
• Built-in protections for safe and reliable operation
• Ideal for solar-powered homes, cabins, telecom towers, and battery banks
• Common use cases:
  • Off-grid solar installations
  • Battery charging and DC load control
  • Solar lighting and irrigation systems
  • Backup power for routers, cameras, and appliances