High-reliability Morningstar SunSaver Duo SSD-25RM 25 A dual-battery solar charge controller with remote LCD meter, ideal for caravans, motorhomes, boats and yachts.

• Rated charging current: 25 A for 12 V systems; maximum solar input power 400 W (or 25 A).
• Extremely high reliability — 5-year warranty and an estimated 15-year life.
• Protection & charging: four-stage series PWM, reverse-current stop at night, over-charge, short-circuit and reverse-polarity protection; selectable battery types (sealed or flooded) and slow-switching mode for sensitive loads.
• Self-consumption: 5.5 mA at night, 10 mA when charging; remote LCD meter consumption 6-15 mA.
• Grounding: negative common ground; minimum battery voltage 1 V; 3 pairs of terminals (battery 1, battery 2, solar).
• Remote meter cable length 10 m (32.8 ft); working temperature -40 °C to +45 °C (-40 °F to +113 °F).
• Terminals accept up to 16 mm² (≈ AWG 5) cable; controller size 168.8 x 55.1 x 34.5 mm (6.65 x 2.17 x 1.36 in); meter size 97 x 97 x 31 mm (3.82 x 3.82 x 1.22 in); controller weight 260 g (9.2 oz).
• Includes data sheet for SSD-25RM; fully automatic operation, factory presets, easy to install and suitable for single or two-battery systems with programmable charging priority and auto-divert.

Compatible with caravans, motorhomes, boats and yachts — consult the SSD-25RM data sheet for wiring, mounting and safety notes; designed for 12 V systems only.