Simtek Planet40 – 40A MPPT Solar Charge Controller – 70 VOC, 40A | 12V | Low Battery Load Cutoff | Works with & without Battery – 3 Months Warranty

The Simtek Planet40 – 40A MPPT Solar Charge Controller is a high‑efficiency and cost‑effective solar charge controller designed to optimize the performance of your solar power system. Built with advanced MPPT (Maximum Power Point Tracking) technology, it intelligently tracks the maximum power point of your solar panels to extract the most energy possible, resulting in faster charging and reduced energy loss.

This controller supports 40 A output current and handles solar panel input voltages up to 70 V (VOC), making it suitable for 12 V solar systems when paired with solar panels capable of delivering the right input range. Its versatile design allows it to work with or without a battery, so you can directly power DC loads when a battery is not installed.

Key features include an automatic low‑battery load cutoff that protects your battery from deep discharge, built‑in safety protections (such as low‑voltage and overheat protection), and fully automatic operation that adjusts charging parameters for reliable performance.

With support for universal battery types (e.g., lead‑acid, AGM, gel, and lithium), direct DC load support up to 20 A, and a rugged, easy‑to‑install design, the Planet40 is ideal for residential, commercial, and off‑grid solar applications. The unit also includes a 3‑month warranty for peace of mind.