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Auto switch between Solar PV and DC dual charging Buck MPPT
Product Series: A12PA / A12PB / A24PA / A24PB
A12PA
12V
12.5A
180W PV Power
A12PB
12V
20A
300W PV Power
A24PA
24V
12.5A
300W PV Power
A24PB
24V
20A
560W PV Power
Key Features
- PV+DC Dual charging: Solar PV + DC dual channel charging Auto switch
- MPPT maximum power tracking technology, tracking efficiency >99.9%
- Supports simultaneous full-power charging and discharging
- Supports multiple battery types: NMC, LFP, Lead-acid, Gel, Sodium batteries
- Supports battery activation for lithium and lead-acid batteries
- Supports charge current and full charge settings
- Supports temperature compensation function
- LCD display for real-time monitoring, SOC display supported
Communication
- RS485 communication (Standard Modbus-RTU protocol, adjustable baud rate)
- TTL communication (Standard Modbus-RTU protocol, adjustable baud rate)
- Bluetooth communication (external optional)
- Ethernet communication (external optional)
- External 12V power supply supported
Protection Features
- PV over-voltage, reverse polarity, short circuit protection
- Night reverse charge protection, input power limit protection
- Over-temperature, device over-temperature, battery over-temperature protection
- Load short circuit, load overload protection
- Battery over-voltage/over-discharge protection, battery reverse polarity protection
Applications
Technical Specifications Comparison
| Specification | A12PA | A12PB | A24PA | A24PB |
|---|---|---|---|---|
| System Platform | 12V Platform | 12V Platform | 24V Platform | 24V Platform |
| System Mode | Buck | Buck | Buck | Buck |
| Rated Charge Current | 12.5A | 20A | 12.5A | 20A |
| Max PV Input Current | 10A | 18A | 10A | 18A |
| Max Solar Panel Power | 180W | 300W | 300W | 560W |
| PV Open Circuit Voltage (Voc) | <30V | <30V | <56V | <56V |
| Recommended PV MPP Voltage | 16V~24V | 14V~24V | 16V~44V | 30V~50V |
| System Max Voltage | 36V(±2%) | 36V(±2%) | 63V(±2%) | 63V(±2%) |
| MPPT Tracking Efficiency | >99.9% | >99.9% | >99.9% | >99.9% |
| MPPT Tracking Speed | <1ms | <1ms | <1ms | <1ms |
| Charge Conversion Efficiency | >96% | >96% | >96% | >96% |
| Rated Load Current | 10A | 20A | 10A | 15A |
| Standby Power Consumption | ≤30mA | ≤30mA | ≤30mA | ≤30mA |
| Protection Level | IP32 | IP32 | IP32 | IP32 |
| Operating Temp Range | -35℃~65℃ | -35℃~65℃ | -35℃~65℃ | -35℃~65℃ |
| Cooling Method | Natural/Forced | Natural/Forced | Natural/Forced | Natural/Forced |
| Dimensions (L×W×H) | 97×170×32mm | 97×170×37mm | 97×170×32mm | 97×170×37mm |
| Weight | 0.36kg | 0.57kg | 0.47kg | 0.55kg |
| Communication | RS485/TTL/Bluetooth(optional)/Ethernet(optional) | |||
| LFP Battery | 4S | 4S | 7~8S | 7~8S |
| NMC Battery | 3~4S | 3~4S | 6~7S | 6~7S |
| Lead-acid/Gel Battery | 1S | 1S | 2S | 2S |
| Sodium Battery | 3~4S | 3~4S | - | - |
| External 12V Output | <300mA | <300mA | <300mA | <300mA |
📥 Product Manual Download
Product Features
PV+AUX Dual Input
Supports simultaneous solar PV and DC power dual input, flexibly adapting to different energy scenarios.
99.9% MPPT Efficiency
Industry-leading MPPT maximum power tracking technology with >99.9% tracking efficiency and <1ms tracking speed.
Multi-Battery Compatible
Supports NMC, LFP, Lead-acid, Gel, and Sodium batteries, configurable via DIP switch or software.
Full-Power Charge/Discharge
Supports simultaneous full-power charging and discharging to meet various application needs.
Multiple Protections
Comprehensive protection: PV over-voltage, reverse polarity, short circuit, night reverse charge, load overload/short circuit, etc.
Multiple Communication
Supports RS485 (Modbus), TTL, Bluetooth (optional), Ethernet (optional) communication, with external 12V power supply.
Typical Applications
Solar Cameras
Provides stable power for security cameras with 24/7 uninterrupted monitoring.
RV Solar Systems
Ideal for RV camping with reliable solar charging solutions.
Off-Grid Cabins
Independent power supply for remote cabins and kiosks.
Communication Base
Stable power for communication equipment and sensor networks.
Agricultural Irrigation
Green power support for agricultural irrigation equipment.
Field Power
Mobile power solutions for field operations and exploration.
Want to Learn More?
Our technical team can provide professional product consultation and technical support. OEM/ODM customization available.
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