MPPT Solar Charge Controller 30A/40A with Bluetooth, WiFi & RS485 | 12V/24V/36V/48V Auto

MPPT Solar Charge Controller 30A/40A with Bluetooth, WiFi & RS485

Upgrade your solar system with this intelligent MPPT Solar Charge Controller, designed for efficient charging, stable power management, and remote monitoring. It automatically detects compatible system voltage and supports several battery types, making it suitable for homes, farms, workshops, caravans, boats, and off-grid installations.

Key Features

• Advanced MPPT Technology with tracking efficiency of up to 99%
• 30A or 40A charging options
• Supports 12V, 24V, 36V and selected 48V systems
• Bluetooth 5.2 and WiFi monitoring
• Mobile app control for real-time system information and settings
• RS485 communication interface
• Compatible with:
  • Sealed lead-acid batteries
  • Gel batteries
  • Flooded batteries
  • Lithium-ion batteries
  • LiFePO4 batteries
  • Custom battery settings
• Automatic voltage detection
• USB output for charging small devices
• Flame-retardant housing with aluminium heat-dissipation back cover
• Suitable for solar lighting, battery charging, off-grid systems and power management

Safety Protection

The controller includes multiple built-in protections:

• Low-voltage protection
• Overvoltage protection
• Overcurrent protection
• Overload protection
• Short-circuit protection
• Reverse-polarity protection
• Intelligent temperature control

Available Models

LTM2430 — 30A

• System voltage: 12V / 24V / 36V automatic
• Maximum PV voltage: 80V
• Maximum charging current: 30A
• Maximum load current: 30A
• Maximum PV power:
  • 390W at 12V
  • 780W at 24V
  • 1100W at 36V
• Conversion efficiency: 92%–99%
• MPPT tracking efficiency: ≥99%
• USB output: 5V / 2A
• Bluetooth: BLE 5.2
• WiFi: 2.4GHz
• RS485 baud rate: 115200
• Dimensions: 168 × 120 × 50 mm
• Weight: 0.95 kg

LTM2440 — 40A

• System voltage: 12V / 24V / 36V automatic
• Maximum PV voltage: 80V
• Maximum charging current: 40A
• Maximum load current: 30A
• Maximum PV power:
  • 520W at 12V
  • 1040W at 24V
  • 1040W at 36V
• Conversion efficiency: 92%–99%
• MPPT tracking efficiency: ≥99%
• USB output: 5V / 2A
• Bluetooth: BLE 5.2
• WiFi: 2.4GHz
• RS485 baud rate: 115200
• Dimensions: 168 × 120 × 50 mm
• Weight: 0.95 kg

LTM4830 — 30A

• System voltage: 12V / 24V / 36V / 48V automatic
• Maximum PV voltage: 120V
• Charging current:
  • 30A at 12V/24V
  • 20A at 36V/48V
• Maximum load current: 30A
• Maximum PV power:
  • 390W at 12V
  • 780W at 24V
  • 975W at 36V
  • 1040W at 48V
• Conversion efficiency: 92%–99%
• MPPT tracking efficiency: ≥99%
• USB output: 5V / 2A
• Bluetooth: BLE 5.2
• WiFi: 2.4GHz
• Dimensions: 171 × 121 × 59 mm
• Weight: 0.95 kg

LTM4840 — 40A

• System voltage: 12V / 24V / 36V / 48V automatic
• Maximum PV voltage: 120V
• Charging current:
  • 40A at 12V/24V
  • 25A at 36V/48V
• Maximum load current: 30A
• Maximum PV power:
  • 520W at 12V
  • 1040W at 24V
  • 1170W at 36V
  • 1300W at 48V
• Conversion efficiency: 92%–99%
• MPPT tracking efficiency: ≥99%
• USB output: 5V / 2A
• Bluetooth: BLE 5.2
• WiFi: 2.4GHz
• Dimensions: 171 × 121 × 59 mm
• Weight: 0.95 kg

App Support

The mobile app supports:

English, German, French, Spanish, Portuguese, Italian, Polish, Dutch, Japanese and Chinese.

Recommended Wiring Sequence

For safe installation:

1. Connect the battery
2. Connect the load
3. Connect the solar panel

To disconnect:

1. Disconnect the solar panel
2. Disconnect the load
3. Disconnect the battery

Package Includes

• 1 × MPPT Solar Charge Controller
• 1 × User Manual
• Communication accessories according to the selected model

Important: Installation should be carried out by a qualified person. Always confirm panel voltage, battery voltage and charging current before connecting the controller.