40A 48V MPPT Solar Charge Controller

40A MPPT solar charge controller for 12V–48V battery systems, expandable via RS485 parallel connection for higher charging capacity.

SHORT VALUE PROPOSITION

A professional-grade MPPT solar charge controller designed for scalable battery bank systems, offering high conversion efficiency, multi-voltage support, and coordinated parallel expansion.

KEY FEATURES

• Advanced MPPT tracking with high conversion efficiency
  
• Supports 12V / 24V / 36V / 48V battery systems (auto-detect)
  
• Rated solar charging current: 40A
  
• Maximum PV input voltage: ≤150V (Voc)
  
• Parallel charging support via RS485 connection cable
  
• In-built Bluetooth module for APP monitoring
• External temperature sensor INCLUDED for accurate battery temperature compensation
  
• Die-cast aluminum housing with enhanced heat dissipation
  
• Negative-grounded system design
  
• Full electronic protection (overcharge, overheat, reverse polarity)
  

PARALLEL EXPANSION (IMPORTANT)

Charging current capacity can be expanded by connecting two MPPT controllers in parallel using an RS485 parallel charge connection cable. This configuration allows coordinated charging of larger battery bank systems while maintaining stable system control.

APPLICATIONS

• 48V battery bank systems
• RV, yacht, and marine solar systems
• Power cabinets and control enclosures
• Off-grid and backup power systems
• Scalable solar charging installations
  

TECHNICAL SPECIFICATIONS

• Model: ME-MS4840N
  
• Battery System Voltage: 12V / 24V / 36V / 48V (Auto)
  
• Rated Charge Current: 40A
  
• Max PV Input Voltage (Voc): ≤150V

Max PV Input Power:

• 600W @ 12V
  
• 1200W @ 24V
  
• 1800W @ 36V
  
• 2400W @ 48V
  
• Communication: RS485 (RJ12) + Bluetooth (APP)
  
• Temperature Sensing: External temperature sensor (included)
  
• Operating Temperature: -35°C to +45°C
  
• IP Rating: IP43
  
• Operating Altitude: ≤3000 m
  
• Dimensions: 218 × 150 × 65 mm
  
• Net Weight: ~1.9 kg
  
• System Wiring: Negative grounded
  

WHAT'S INCLUDED

• 1 × 40A MPPT Solar Charge Controller
  
• 1 × External temperature sensor (included)
  
• In-built Bluetooth module
  
• User manual
  

USAGE NOTES / DISCLAIMERS

Maximum charging performance depends on solar array sizing, battery configuration, and environmental conditions. Parallel operation requires compatible wiring and correct RS485 configuration. Installation should follow the user manual and applicable electrical standards.