{"title":"Solar Charge Controllers","description":null,"products":[{"product_id":"mastervolt-131824000-solar-chargemaster-scm40-pwm","title":"Mastervolt 131824000 Solar ChargeMaster SCM40 PWM","description":"\u003ch3\u003e\u003cb\u003eMastervolt Solar ChargeMaster SCM40 PWM (131824000)\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cb\u003eMastervolt Solar ChargeMaster SCM40 PWM (131824000)\u003c\/b\u003e is a high-capacity \u003cb\u003e40-A Pulse Width Modulation (PWM) solar charge controller\u003c\/b\u003e engineered for marine, mobile, and off-grid \u003cspan class=\"math-inline\"\u003e12V\u003c\/span\u003e and \u003cspan class=\"math-inline\"\u003e24V DC\u003c\/span\u003e battery systems. Designed to manage photovoltaic array outputs up to \u003cspan class=\"math-inline\"\u003e700 Wp\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e12V\u003c\/span\u003e) or \u003cspan class=\"math-inline\"\u003e1400 Wp\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e24V\u003c\/span\u003e), it provides optimal 3-stage battery charging (Bulk, Absorption, Float) for AGM, Gel, Lead-Acid, and Lithium-Ion (\u003cspan class=\"math-inline\"\u003eLiFePO4\u003c\/span\u003e) battery chemistries.\u003c\/p\u003e\n\u003cp\u003eEquipped with a clear, backlit digital LCD screen, the SCM40 PWM displays real-time solar yield, battery voltage, charging current, and system load status. It features an integrated \u003cspan class=\"math-inline\"\u003e40A\u003c\/span\u003e switchable load output with low-voltage disconnect (LVD) to prevent deep discharge of battery banks, alongside automatic ambient temperature compensation and comprehensive protection against reversed polarity, short circuits, and thermal overload.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e3-Stage Intelligent PWM Charging:\u003c\/b\u003e Optimizes battery health with Bulk, Absorption, and Float charge cycles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eIntegrated Backlit Digital Display:\u003c\/b\u003e Provides real-time metrics including battery voltage, PV charge current, load current, and battery state-of-charge.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSwitchable 40A Auxiliary Load Output:\u003c\/b\u003e Integrated low-voltage disconnect (LVD) protects battery banks from damaging over-discharge.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAutomatic System Voltage Recognition:\u003c\/b\u003e Automatically detects \u003cspan class=\"math-inline\"\u003e12V\u003c\/span\u003e or \u003cspan class=\"math-inline\"\u003e24V DC\u003c\/span\u003e battery system configuration upon startup.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMulti-Chemistry Compatibility:\u003c\/b\u003e Selectable battery presets for Lead-Acid, Gel, AGM, and Lithium-Ion (\u003cspan class=\"math-inline\"\u003eLiFePO4\u003c\/span\u003e) batteries with optional temperature compensation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSolid-State Electronic Protection:\u003c\/b\u003e Built-in protection against reverse PV\/battery polarity, short circuits, overtemperature, and reverse current flow at night.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003ctable style=\"width: 100.012%; height: 646.875px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 19.6023px;\"\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 19.6023px;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003eManufacturer \/ Brand\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003eMastervolt (Navico Group)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003ePart Code \/ Master SKU\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003e131824000\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003eComponent Category\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003eRenewable Power \/ Solar Charge Controllers\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003eCharge Topology\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003ePulse Width Modulation (PWM)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eNominal System Voltage\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"math-inline\"\u003e12.0V \/ 24.0V DC\u003c\/span\u003e (Auto-detection)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eMax Continuous Charge Current\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"math-inline\"\u003e40.0 A\u003c\/span\u003e @ \u003cspan class=\"math-inline\"\u003e40°C\u003c\/span\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eMax Solar Panel Power (Pmax)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"math-inline\"\u003e700 Wp\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e12V System\u003c\/span\u003e) | \u003cspan class=\"math-inline\"\u003e1400 Wp\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e24V System\u003c\/span\u003e)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eMax PV Open Circuit Voltage\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"math-inline\"\u003e30.0V DC\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e12V System\u003c\/span\u003e) | \u003cspan class=\"math-inline\"\u003e50.0V DC\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e24V System\u003c\/span\u003e)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eAuxiliary Load Output\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"math-inline\"\u003e40.0 A\u003c\/span\u003e Continuous with Configurable Low-Voltage Disconnect\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003eSelf-Consumption\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"math-inline\"\u003e4 mA\u003c\/span\u003e (Night \/ Standby)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eSupported Battery Types\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eAGM, Gel, Flooded Lead-Acid, Lithium-Ion (\u003cspan class=\"math-inline\"\u003eLiFePO4\u003c\/span\u003e)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eTemperature Compensation\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"math-inline\"\u003e-30 mV\/ °C\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e12V\u003c\/span\u003e) \/ \u003cspan class=\"math-inline\"\u003e-60mV\/ °C\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e24V\u003c\/span\u003e) with included sensor\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003eDisplay Interface\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003eBacklit Custom Segment LCD Display\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eTerminal Wire Gauge Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eUp to \u003cspan class=\"math-inline\"\u003e16 mm²\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e6 AWG\u003c\/span\u003e)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eIngress Protection Rating\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eIP20 (Indoor \/ Protected Electronics Bay Installation)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eOperating Temperature\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"math-inline\"\u003e-20°C to +50°C\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e-4°F to +122°F\u003c\/span\u003e)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eDimensions (\u003cspan class=\"math-inline\"\u003eH * W * D\u003c\/span\u003e)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"math-inline\"\u003e98 mm * 189 mm * 53 mm\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e3.86\" * 7.44\" * 2.09\"\u003c\/span\u003e)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003eUnit Weight\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 19.6023px;\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"math-inline\"\u003e0.50 kg\u003c\/span\u003e (\u003cspan class=\"math-inline\"\u003e1.10 lbs\u003c\/span\u003e)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.3033%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eCompliance \u0026amp; Approvals\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4235%; height: 39.2045px;\"\u003e\u003cspan\u003e\u003cb\u003eCE, IEC 62109-1, RoHS Compliant\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1166\/3720\/files\/Screenshot2026-09-17123947.png?v=1789620024\" alt=\"\" width=\"450\" height=\"299\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e","brand":"Mastervolt","offers":[{"title":"Default Title","offer_id":31617094549587,"sku":"131824000","price":135.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1166\/3720\/files\/MV131824000_1.jpg?v=1789619600"}],"url":"https:\/\/www.obmgonline.com\/collections\/solar-charge-controllers.oembed","provider":"OBMG Online","version":"1.0","type":"link"}