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Rich Solar 20 Amp MPPT Solar Charge Controller
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Rich Solar RS-MPPT20 20 Amp MPPT Solar Charge Controller
The Rich Solar RS-MPPT20 is a compact 20A MPPT solar charge controller designed for 12V and 24V battery-based solar systems. With automatic voltage recognition, support for Sealed, Gel, Flooded, and Lithium batteries, MPPT tracking efficiency up to 99%, peak conversion efficiency of 98%, LCD and LED monitoring, electronic protection features, load control, heat-dissipating die-cast aluminum construction, and RS232 support for the BT-1 Bluetooth module, it gives smaller RV, van, boat, cabin, shed, and off-grid solar systems a smarter charging foundation.
Product Overview
The RS-MPPT20 is designed for customers who want MPPT charging performance in a smaller controller size. It regulates solar power from the panel array to a compatible battery bank and helps improve charging efficiency compared with basic PWM-style controller setups.
This controller is a strong fit for RV solar kits, camper vans, small travel trailers, boats, sheds, cabins, and DIY battery-based solar systems where a 20A MPPT controller is properly sized for the panel array and battery bank.
Built for Smaller 12V and 24V Solar Charging Systems
The RS-MPPT20 is best for systems that need efficient MPPT charging without stepping up to a larger 30A, 40A, or 60A controller. It is compact enough for mobile installs while still offering battery compatibility, display visibility, load control, and protection features.
Key Features That Matter
This description keeps the focus on the real buying decision: MPPT energy harvest, 20A controller sizing, 12V/24V auto recognition, battery compatibility, solar input limits, display monitoring, protection features, and heat dissipation.
The RS-MPPT20 automatically recognizes 12V or 24V DC system voltage, helping simplify setup for common battery banks used in RV, van, boat, cabin, and off-grid solar systems.
MPPT technology helps the controller locate the best operating point from the solar array. With tracking efficiency up to 99% and peak conversion efficiency of 98%, it helps improve usable charging performance from connected panels.
The controller includes PV, battery, load, temperature sensor, and RS232 connection points. The RS232 port allows communication with the BT-1 Bluetooth module when paired with the correct accessory.
The die-cast aluminum design helps dissipate heat during operation, supporting more reliable performance in compact electrical compartments when installed with proper ventilation.
System Monitoring and Protection
The LCD screen and multiple LED indicators display system operation information, customizable parameters, and error codes. That gives customers better visibility into battery charging status, controller behavior, and possible system issues.
Built-in electronic protection helps guard against reverse polarity, overcharging, over-discharging, overload, short-circuiting, and reverse current. The controller also supports diverse load control and can charge over-discharged lithium batteries when used within the correct system setup.
Important System Specs
The RS-MPPT20 should be matched to the solar array, battery bank, wiring, and protection equipment. It is smaller than the 30A and 40A controller options, which makes system sizing especially important.
Best Uses
- Small RV solar charging systems
- Camper vans and travel trailers
- Boat and compatible marine solar battery systems
- Cabins, sheds, and small remote buildings
- DIY off-grid solar battery banks
- 12V and 24V DC solar charging systems
- Sealed, Gel, Flooded, and Lithium battery charging
- Compact solar kits that need a 20A MPPT controller
- Customers upgrading from basic PWM charging to MPPT charging
- Solar arrays that do not require a larger 30A or 40A controller
Key Benefits
- 20A MPPT solar charge controller
- Automatically recognizes 12V and 24V DC system voltages
- Compatible with Sealed, Gel, Flooded, and Lithium deep-cycle batteries
- MPPT tracking efficiency up to 99%
- Peak conversion efficiency of 98%
- 20A rated battery current
- 20A rated load current
- 25A max PV input short current
- 100VDC maximum solar input voltage
- 32V maximum battery voltage
- LCD screen with multiple LED indicators
- Displays operation information, customizable parameters, and error codes
- Electronic protection against reverse polarity and reverse current
- Protection against overcharge, over-discharge, overload, and short circuits
- Diverse load control capability
- Can charge over-discharged lithium batteries
- Die-cast aluminum design for efficient heat dissipation
- RS232 port for BT-1 Bluetooth module communication
- Approx. 8.27 x 5.94 x 2.34 in overall dimensions
- Approx. 3.08 lb net weight
| Specifications | |
| Model SKU | RS-MPPT20 |
|---|---|
| Nominal System Voltage | 12V/24V Auto Recognition |
| Rated Battery Current | 20A |
| Rated Load Current | 20A |
| Max. PV Input Short Current | 25A |
| Max. Battery Voltage | 32V |
| Max Solar Input Voltage | 100 VDC |
| Discharge Circuit Voltage Drop | ≤0.15 V |
| Max. Photovoltaic System Input Power | 260W/12V, 520W/24V |
| Conversion Efficiency | ≤98% |
| MPPT Tracking Efficiency | >99% |
| Operating Temperature | -35℃ to +45℃ |
| Protection Degree | IP32 |
| Net Weight | 3.08 lb |
| Overall Dimensions | 8.27 x 5.94 x 2.34 in |
Frequently Asked Questions
Clear answers to common questions about this product, setup, compatibility, and use.
