Solar ChargeMaster MPPT 25 Charge Controller Buy Direct

Mastervolt SCM25 MPPT solar charge regulator provides efficient 12/24 Volts DC solar charging for small and medium systems, supporting 200 to 700 watts peak solar panel configurations, AGM, gel, wet, and Lithium Ion batteries, and up to 30% faster charging than Pulse Width Modulation technology.

The Mastervolt SCM25 MPPT is a compact solar charge regulator designed for small and medium marine, mobile, and off-grid power systems. As Mastervolt’s smallest MPPT charge regulator, it delivers high-efficiency solar charging with support for solar panel configurations from 200 to 700 watts peak.

Using Maximum Power Point Tracking technology, the SCM25 MPPT improves solar panel efficiency and can charge batteries up to 30% faster than Pulse Width Modulation regulators using the same number of panels. It is suitable for traditional 36-cell and 72-cell panels as well as cost-effective 60-cell solar panels.

The SCM25 MPPT is designed for easy operation, safe charging, and flexible system integration. It supports AGM, gel, wet, and Mastervolt Lithium Ion batteries, includes pre-programmed charging profiles selectable by button, and features a bright backlit LCD display for monitoring solar input, battery status, charge current, warnings, and load information.

Key Features

• MPPT solar charge regulator for faster and more efficient solar charging
• Suitable for small and medium solar power systems
• Supports solar panel configurations from 200 to 700 watts peak
• Charges up to 30% faster than Pulse Width Modulation technology
• Compatible with 36-cell, 60-cell, and 72-cell solar panels
• Automatic 12/24 Volts DC battery system detection
• Supports AGM, gel, wet, and Lithium Ion batteries
• Pre-programmed charging profiles selectable at the push of a button
• Battery temperature sensor for improved battery life
• Switchable output with up to 25 amps current
• Large backlit LCD display
• Buzzer alarm for malfunction alerts
• Passive cooling for very quiet operation
• Robust IP23-rated casing for humid environments
• Protected against condensation in accordance with IP23

Technical Specifications

• Product code: 131902500
• Technology: MPPT, Maximum Power Point Tracker
• Maximum charge current at 40°C / 104°F: 25 A
• Battery system voltage: 12/24 V auto select
• Compatible battery types: AGM, gel, wet, Lithium Ion
• Battery temperature sensor: Yes
• Lithium Ion protection: Via Multipurpose Contact Output, product code 77030500
• Switchable output maximum current: 25 A
• Night energy consumption: 5 mA
• Nominal PV current at 40°C / 104°F: 18 A
• PV start voltage for 12/24 V systems: 15 V / 27 V
• Nominal PV voltage for 12 V systems: 15-66 V
• Nominal PV voltage for 24 V systems: 30-66 V
• Maximum PV voltage at Tmin: 75 V
• Maximum PV power for 12 V systems: 360 Wp
• Maximum PV power for 24 V systems: 720 Wp
• Maximum efficiency: Greater than 98%
• Static MPP efficiency: 99.9%
• Cooling: Passive
• Display/read-out: Backlit LCD with PV power, load power, battery voltage, charge current, warnings, battery state of charge, and battery setting
• Grounding: Negative terminal
• Alarms: Buzzer
• Protection degree: IP23
• Dimensions: 135 x 190 x 75 mm / 5.3 x 7.5 x 3.0 in
• Weight: 1.3 kg / 2.9 lb
• Ambient temperature range: -20°C to 55°C
• Cable size: Maximum 10 mm² Litz wire
• Relative humidity: 95% non-condensing

Applications

• Marine solar charging systems
• RV solar charging systems
• Mobile power systems
• Small and medium off-grid solar systems
• 12 V and 24 V battery charging systems
• Solar charging for AGM, gel, wet, and Lithium Ion batteries
• Systems using 36-cell, 60-cell, or 72-cell solar panels

Ideal For

• Boat owners adding solar charging to a battery system
• RV owners needing efficient solar battery charging
• Installers building compact 12/24 V solar systems
• Users upgrading from Pulse Width Modulation to MPPT charging
• Systems using cost-effective 60-cell solar panels
• Applications requiring quiet, passive cooling
• Humid marine or mobile environments requiring IP23 protection

Protection Features

• Over-temperature protection
• Overload protection
• High battery voltage protection
• Low battery voltage protection
• High PV voltage protection
• Low PV voltage protection
• Short-circuit protection
• Reverse polarity protection
• High-voltage transient protection
• Lithium Ion protection via Multipurpose Contact Output, product code 77030500
• Buzzer alarm for malfunction alerts

System Compatibility

• Compatible with 12 V and 24 V battery systems with automatic voltage detection
• Compatible battery types: AGM, gel, wet, and Lithium Ion
• Suitable for 36-cell, 60-cell, and 72-cell solar panels
• Solar panel configuration capacity: 200 to 700 Wp
• Maximum PV power: 360 Wp for 12 V systems
• Maximum PV power: 720 Wp for 24 V systems
• Nominal PV voltage: 15-66 V for 12 V systems
• Nominal PV voltage: 30-66 V for 24 V systems
• Maximum PV voltage at Tmin: 75 V
• Compatible with Multipurpose Contact Output, product code 77030500, for Lithium Ion protection

Check Before Ordering

• Confirm whether your battery system is 12 V or 24 V.
• Confirm your battery type is AGM, gel, wet, or Lithium Ion.
• Confirm your solar panel configuration does not exceed the regulator’s PV voltage and power limits.
• For 12 V systems, confirm maximum PV power does not exceed 360 Wp.
• For 24 V systems, confirm maximum PV power does not exceed 720 Wp.
• Confirm PV voltage remains below the 75 V maximum PV voltage at minimum temperature.
• Confirm the 25 A maximum charge current is suitable for your battery bank.
• Confirm the IP23 rating is suitable for the mounting location.
• Confirm the installation location stays within the -20°C to 55°C ambient temperature range.
• Confirm cable sizing does not exceed the maximum 10 mm² Litz wire specification.
• For Lithium Ion installations, verify whether the Multipurpose Contact Output is required for protection integration.