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MPPT Solar Charger Controller 40A, 12V/24V auto 100V max solar voltage

Sale price $120.50 Regular price $189.00
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Conversions Tech 40 Amp MPPT Solar Charge Controller

Harvest every ray. This 40 A MPPT controller leverages cutting-edge Max Power Point Tracking to pull up to 98 % of panel output into your battery bank—even under shifting clouds or partial shade. Perfect for telecom repeaters, off-grid cabins, RV rigs, and commercial arrays.

Top-Line Advantages

  • > 99.9 % MPPT Accuracy – Locks onto the true watt sweet spot in milliseconds.
  • Digital 4-Stage Charging – MPPT → Boost → Equalize → Float maximizes capacity & battery life.
  • Auto 12 / 24 V Detection – Zero-config start-up for common systems.
  • Multi-Chemistry Ready – Flooded, AGM, Gel, and LiFePO4 profiles built-in.
  • RS-485 / Modbus + Bluetooth – Real-time data, firmware updates, and IoT dashboards.
  • Thermal Derating + Oversize Heat Sink – Keeps components protected in desert heat.

Technical Specifications

Rated Charge / Load Current 40 A
System Voltage Auto 12 V / 24 V
Max PV Input Voltage 75 V
MPPT Tracking Range 120 W – 960 W (12 V) / 240 W – 1920 W (24 V)
Tracking Efficiency > 99.9 %
Charge Conversion Efficiency Up to 98 %
Battery Types Sealed, Flooded, AGM, Gel, Lithium (LiFePO₄)
Communication RS-485 Modbus (RJ-11), optional Bluetooth / IoT GPRS
Operating Temp -31 °F – 131 °F (-35 °C – 55 °C)
Dimensions
Weight

Ideal Applications

  • Solar telecom base stations & remote repeaters
  • Off-grid cabins, tiny homes & battery storage
  • Commercial / utility PV installations requiring RS-485 data
  • RV, van-life & marine systems upgrading to lithium

 

4 Reasons Pros Buy Direct from Conversions Tech

Headquartered in business-friendly Wyoming, we design, test, and ship every product from inside the United States—delivering genuine “Made-for-America” quality without the big-box markup.

Our in-house team owns every CAD file, mold, and QA station behind our weatherproof boxes, conduit bodies, and power inverters. Vertical control means tighter tolerances, UL-listed safety, and up to 30 % lower cost than private-label imports.

Thousands of SKUs sit ready to go. Orders placed by 2 p.m. ship the same day, keeping contractors, OEMs, and distributors on schedule.

Need a torque spec or an OEM quote at dawn? You’ll speak directly with the Conversions Tech engineering desk—not a script reader—for instant answers, custom kitting, and private-label options.

Bottom line: For rugged, code-compliant electrical solutions shipped fast from a trusted U.S. source, choose Conversions Tech and build it right the first time.

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