Morningstar SunSaver SS-20L-12V: High-Capacity Industrial Battery Protection

The Morningstar SunSaver SS-20L-12V delivers the highest power output in the legendary SunSaver line, providing a robust 20 amps of charging and load current. This "L" model is equipped with an integrated Low Voltage Disconnect (LVD), which automatically safeguards your 12V battery bank by shedding loads at 11.5V. This is the definitive choice for larger industrial off-grid projects, including high-draw telecommunications, remote monitoring stations, and commercial marine vessels.

Engineered for mission-critical reliability, the SS-20L-12V is fully epoxy encapsulated to protect internal 32-bit electronics from humidity, salt spray, and corrosive atmospheres. It is globally certified for Hazardous Locations (Class 1 Division 2, ATEX, and IECEx), making it safe for use in oil and gas fields where flammable vapors may be present.

Premium Industrial Advantages:

• Highest Power Density: Supports up to 20A of solar input and 20A of load—ideal for systems with high-draw DC appliances or large 12V lighting arrays.
• Automatic Battery Safeguard: Integrated LVD prevents permanent battery damage from deep discharge, disconnects at 11.5V, and automatically reconnects at 12.6V.
• Hazardous Location Global Standards: Certified to UL/CSA Class 1 Division 2, plus ATEX and IECEx Zone 2 (Ex IIC), meeting the most stringent safety requirements for international oilfields.
• Unmatched Longevity: 100% solid-state design with zero mechanical relays. Features a failure rate of less than 1 in 1,000 shipped units (<0.1%).
• Extreme Environmental Protection: Anodized aluminum case and epoxy potting provide total resistance to corrosion, dust, and coastal moisture.
• Precision 4-Stage PWM: Optimized Bulk, Absorption, Float, and Equalize stages (Sealed/Flooded selectable) ensure maximum battery life.

Technical Specifications:

Technical Tip: Because the SS-20L-12V handles higher current, use minimum #10 AWG copper wire to prevent voltage drop. If your project requires even more power, multiple SunSavers can be wired in parallel for 40A or more of charging capacity.