M Series Fixed Voltage Buck MPPT Solar Charge Controller

M12PA

12V

14.5A

180W

M12PB

12V

20A

300W

M24PA

24V

14.5A

300W

M24PB

24V

20A

600W

Key Features

  • MPPT maximum power tracking technology, tracking efficiency >99.9%
  • Supports simultaneous full-power charging and discharging
  • Supports multiple battery types: Ternary (Li-ion), LiFePO4, Lead-acid, Gel
  • Supports Li-ion and Lead-acid battery activation
  • Supports charging current settings and full charge settings
  • Supports temperature compensation function
  • Supports multiple load working modes (Manual/Auto)
  • Supports historical data storage

Communication

  • RS485 communication (Standard Modbus protocol, adjustable baud rate)
  • TTL communication (Standard Modbus protocol, adjustable baud rate)
  • Bluetooth communication (optional expansion)
  • Ethernet communication (optional expansion)
  • Supports external 12V power supply

Applications

Residential Solar RV Systems Surveillance Systems Telecom Base Stations Off-Grid Power Agricultural Irrigation
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Technical Specifications Comparison

Parameter M12PA M12PB M24PA M24PB
Platform 12V Platform 12V Platform 24V Platform 24V Platform
System Mode Buck Buck Buck Buck
Rated Charging Current 14.5A 20A 14.5A 20A
Max PV Input Current 10A 18A 10A 18A
Max Solar Panel Power 180W 300W 300W 600W
PV Open Circuit Voltage (Voc) 16V~30V ≤30V 30V~56V ≤56V
Recommended PV Vmp 16V~24V 16V~24V 30V~42V 24V~42V
Max System Withstand Voltage 36V(±2%) 36V(±2%) 60V(±2%) 63V(±2%)
MPPT Tracking Efficiency >99.9% >99.9% >99.9% >99.9%
MPPT Tracking Speed <1ms <1ms <1ms <1ms
Charging Conversion Efficiency >96% >96% >96% >96%
Rated Load Current 10A 20A 10A 20A
Static Power Consumption ≤30mA ≤30mA ≤30mA ≤30mA
Protection Rating IP32 IP32 IP32 IP32
Operating Temperature -35℃~65℃ -35℃~65℃ -35℃~65℃ -35℃~65℃
Cooling Method Natural/Forced Air Natural/Forced Air Natural/Forced Air Natural/Forced Air
Dimensions (L×W×H) 78×150×29mm 94.5×170×34mm 78×150×29mm 94.5×170×34mm
Weight 0.36kg 0.46kg 0.36kg 0.55kg
Communication Interface RS485/TTL/BT(optional)/ETH(optional) RS485/TTL/BT(optional)/ETH(optional) RS485/TTL/BT(optional)/ETH(optional) RS485/TTL/BT(optional)/ETH(optional)
LiFePO4 Battery 4S 4S 7~8S 8S
Ternary Li-ion Battery 3~4S 3~4S 6~7S 6~7S
Lead-acid/Gel Battery 1S 1S 2S 2S
External 12V Supply <300mA <150mA <300mA <150mA

Protection Functions

PV over-voltage protection, PV reverse connection protection, PV short circuit protection, Night reverse charge protection, Input power limit protection, Over-temperature protection, Load short circuit protection, Load overload protection, Battery over-voltage/over-discharge protection, Battery reverse connection protection

📥 Product Manual Downloads

M12PA

V1.6 Version

Download Manual

M12PB

V1.1 Version

Download Manual

M24PA

V1.1 Version

Download Manual

M24PB

V1.1 Version

Download Manual

Product Features

99.9% MPPT Efficiency

Industry-leading MPPT maximum power tracking technology, tracking efficiency >99.9%, tracking speed 1ms, fast and accurate maximum power point tracking.

🔋

Multi-Battery Compatible

Supports Ternary (Li-ion), LiFePO4, Lead-acid, Gel batteries and more, independently configured via upper computer software.

🔄

Full-Power Charge/Discharge

Supports simultaneous full-power charging and discharging to meet different application requirements.

🛡️

Multi-Protection

Complete protection mechanisms: PV over-voltage, PV reverse, PV short circuit, night reverse charge, load overload, load short circuit - ten-layer protection.

📡

Multiple Communication

Supports RS485 (Modbus), TTL, Bluetooth (optional), Ethernet (optional) communication, supports external 12V power supply.

❄️

Smart Cooling

High-quality aluminum heat sink, forced air cooling, automatic derating at high temperatures to ensure reliable and efficient operation.

Typical Applications

🏠

Residential Solar Systems

Provides stable solar charging solutions for homes.

🚐

RV Solar Systems

Suitable for RV camping, providing reliable solar charging.

📹

Solar Surveillance Systems

Provides stable power for security cameras with 24/7 monitoring.

📡

Telecom Base Station Power

Stable power for communication equipment and sensor networks.

🌱

Agricultural Irrigation

Green power support for agricultural irrigation equipment.

🏭

Industrial Off-Grid Power

Independent power supply for remote industrial areas.

Want to Learn More?

Our technical team can provide professional product consultation and technical support. OEM/ODM customization services available.

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