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M Series Variable Voltage Buck MPPT Solar Charge Controller
M24HA
12V/24V
10A
180W/300W
M24HB
12V/24V
20A
300W/600W
M24HC
12V/24V
30A
420W/820W
M48HC
24V/36V/48V
30A
820W~1440W
Key Features
- MPPT maximum power point tracking technology, tracking efficiency >99%
- 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 parallel charging (M24HC/M48HC)
- Supports multiple load working modes (Manual/Auto)
- Supports capacitive and inductive load startup
- Supports historical data storage
Communication
- RS485 communication (Standard Modbus protocol, adjustable baud rate)
- TTL communication (Standard Modbus protocol, adjustable baud rate)
- Bluetooth communication (external optional)
- Ethernet communication (external optional)
- Supports external 12V power supply
Applications
Technical Specifications Comparison
| Specification | M24HA | M24HB | M24HC | M48HC |
|---|---|---|---|---|
| Compatible Platforms | 12V / 24V | 12V / 24V | 12V / 24V | 24V / 36V / 48V |
| System Mode | Buck | Buck | Buck | Buck |
| Rated Charging Current | 12.5A | 20A | 30A | 30A |
| Max PV Input Current | 10A | 18A | 28A | 28A |
| 12V Platform Max Power | 180W | 300W | 420W | - |
| 24V Platform Max Power | 300W | 600W | 820W | 820W |
| 36V Platform Max Power | - | - | - | 1080W |
| 48V Platform Max Power | - | - | - | 1440W |
| Max PV Open Circuit Voltage (Voc) | 56V | 56V | 90V | 90V |
| System Max Withstand Voltage | 60V(±2%) | 63V(±2%) | 100V(±2%) | 100V(±2%) |
| MPPT Tracking Efficiency | >99.9% | >99.9% | >99% | >99% |
| MPPT Tracking Speed | <1ms | <1ms | <1ms | <1ms |
| Charging Conversion Efficiency | >96% | >96% | 93%~98% | 93%~98% |
| Rated Load Current | 10A | 20A | 30A | 25A |
| Standby Power | ≤30mA | ≤30mA | ≤50mA | ≤50mA |
| Protection Level | IP32 | IP32 | IP32 | IP32 |
| Operating Temperature | -35℃~65℃ | -35℃~65℃ | -35℃~65℃ | -35℃~65℃ |
| Cooling Method | Natural/Forced Air | Natural/Forced Air | Natural/Speed-controlled Fan | Natural/Speed-controlled Fan |
| Dimensions (L×W×H) | 78×150×29mm | 94.5×170×34mm | 109×190×40mm | 109×190×40mm |
| Weight | 0.36kg | 0.55kg | 0.82kg | 0.82kg |
| Communication Interfaces | RS485/TTL/Bluetooth/Ethernet | RS485/TTL/Bluetooth/Ethernet | RS485/TTL/Bluetooth/Ethernet | RS485/TTL/Bluetooth/Ethernet |
| LiFePO4 Battery | 4S/8S | 4S/8S | 4~8S | 7~16S |
| Ternary Li-ion Battery | 3S/6S | 3S/6S | 3~8S | 6~14S |
| Lead-acid/Gel Battery | 1S/2S | 1S/2S | 1~2S | 2~4S |
| Parallel Charging Support | - | - | ✓ | ✓ |
Protection Functions
PV over-voltage, PV reverse connection, PV short circuit, Night reverse charging, Input power limiting, Over-temperature, Load short circuit, Load overload, Battery over-voltage/over-discharge, Battery reverse connection protection
📥 Product Manual Downloads
Product Features
99% MPPT Efficiency
Industry-leading MPPT maximum power point tracking technology with >99% efficiency and <1ms tracking speed for fast and accurate maximum power point tracking.
Multi-Battery Compatible
Supports Ternary Li-ion, LiFePO4, Lead-acid, Gel and other battery types, independently configurable via PC software.
Full-Power Charge/Discharge
Supports simultaneous full-power charging and discharging, M24HC/M48HC supports parallel charging for various application scenarios.
Multi-Protection
Comprehensive protection: PV over-voltage, reverse connection, short circuit, night reverse charging, load overload, load short circuit - 10 protections.
Multiple Communication
Supports RS485 (Modbus), TTL, Bluetooth (optional), Ethernet (optional), and external 12V power supply.
Smart Cooling
High-quality aluminum heatsink with forced air cooling (M24HC/M48HC with speed-controlled fan) ensures reliable and efficient operation.
Typical Applications
Residential Solar Systems
Provides stable solar charging solutions for homes.
RV Solar Systems
Reliable solar charging for RV camping.
Solar Surveillance Systems
Provides stable power for security cameras with 24/7 monitoring.
Telecom Base Stations
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.
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