Renogy MPPT Solar Charge Controller | RCC20MS | 20A | 12V/24V

Maximize your RV solar system's efficiency with the Renogy RCC20MS 20A MPPT Solar Charge Controller (12V/24V). Maximum Power Point Tracking (MPPT) technology delivers up to 30% higher charging efficiency than PWM alternatives, with built-in temperature monitoring, extensive electronic protection, and compatibility with both lead-acid and lithium batteries.

MPPT Technology — 30% More Efficient Than PWM

• Maximum Power Point Tracking algorithm significantly improves system energy utilization
• 30% higher charging efficiency vs standard PWM controllers
• MPPT tracking efficiency up to 99.9%
• Circuit energy conversion efficiency up to 98%
• Multiple tracking algorithms quickly locate the best operating point on the I-V curve

Ultimate efficiency ensures no waste of energy from your solar panels — meaningful advantage over cheaper PWM controllers.

20A Rating with 12V/24V Compatibility

• 20 amp maximum charge current
• 12V and 24V battery system compatibility

Comprehensive Electronic Protection

• Battery reverse polarity protection
• PV reverse polarity protection
• PV short-circuit protection
• Charge over-current protection

Fanless Temperature Management

Built-in temperature monitoring module allows for charging through derating with no fan required — silent operation and stable performance in extreme temperature environments. No moving parts means fewer failure points.

Battery Chemistry Compatibility

Supports a variety of battery types with user-specified charging parameters:

• Lead-acid batteries (various sub-types)
• Lithium batteries
• User-configurable for specific battery requirements

Modbus Protocol Support

Standard Modbus protocol support enables communication with monitoring systems, home automation setups, and various installation environments.

⚠️ Professional Installation Recommended

Solar charge controller installation involves working with PV solar array wiring and battery bank connections. Installation should be performed by a qualified RV solar or electrical technician to ensure proper polarity, wire gauge, and system integration.

Genuine Renogy

Renogy is an established RV and off-grid solar brand with a proven track record in charge controller and solar system components.

Key Features

• Genuine Renogy RCC20MS 20A MPPT solar charge controller
• 12V / 24V battery compatibility
• 30% higher efficiency than PWM controllers
• 99.9% MPPT tracking efficiency
• 98% circuit conversion efficiency
• Electronic protection: Battery reverse polarity, PV reverse polarity, PV short-circuit, charge over-current
• Built-in temperature monitoring — fanless design
• Lead-acid + lithium battery support
• User-configurable charging parameters
• Modbus protocol support

Specifications

• Brand: Renogy
• Model: RCC20MS
• Type: MPPT Solar Charge Controller
• Max Charge Current: 20 A
• Battery Voltage: 12V / 24V compatible
• MPPT Tracking Efficiency: Up to 99.9%
• Circuit Conversion Efficiency: Up to 98%
• Battery Types: Lead-acid, lithium (user-configurable)
• Protection: Battery reverse polarity, PV reverse polarity, PV short-circuit, charge over-current
• Temperature Management: Built-in monitoring, fanless design
• Communication Protocol: Standard Modbus