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