ACOPOWER ProteusX 20A PWM Solar Charge Controller | Waterproof 12V/24V for Off-Grid Systems

The ACOPOWER ProteusX 20A PWM Solar Charge Controller is ACOPOWER's first fully waterproof PWM controller — built for serious off-grid installs with a negative ground design, 8 battery type compatibility, and a bright blue LCD display — at $98.

• Fully Waterproof Construction — Rated for indoor and outdoor use including boats, RVs, and exposed off-grid cabins — this controller handles the elements without compromise.
• 8 Battery Type Compatibility — Works with Lithium-ion, LiFePO4, LTO, Gel, AGM, Flooded, Crystal, and Calcium batteries — one controller that adapts to your entire battery ecosystem.
• 20A Continuous Charging Capacity — Supports up to 360W at 12V or 720W at 24V, with auto 12V/24V detection — scales cleanly with your panel array as you expand.
• Negative Ground Design — Compatible with the standard negative ground convention used in virtually all RV, marine, and off-grid systems — no rewiring or adapters needed.
• Bright Blue Backlit LCD — Displays volts, amps, amp hours, battery presets, and error codes at a glance — critical diagnostics without pulling out a multimeter.
• 5-Stage Charging Algorithm — Soft, Bulk, Absorption, Equalization, and Float stages deliver a 100% capacity return and extend battery lifespan over thousands of cycles.
• Multi-Layer Protection — Guards against reverse polarity, reverse current (night drain), over-temperature, and over-voltage — your battery bank stays safe around the clock.
• Advanced PWM Technology — Pulse Width Modulation charging reduces stress on battery cells compared to unregulated charging, maximizing efficiency in 12V and 24V off-grid applications.