EpRec MPPT 40A 12V/24V Solar Charge Controller with LCD Display | Dual USB, Auto Focus Tracking

Overview

Meet the EpRec MPPT 40A 12V/24V Auto Focus Tracking Solar Panel Charge Controller. Built for off-grid setups, this regulator blends efficient MPPT operation with a clear LCD display and practical protections, helping you make the most of sunny days without guessing about performance.

Key capabilities

• Up to 40A MPPT current with compatibility for 12V and 24V battery systems; maximum input wattage of 480W (12V) or 960W (24V).
• Auto focus tracking identifies the maximum charging current to optimize PV input and improve overall efficiency compared with traditional controllers.
• Temperature compensation automatically adjusts charging voltage according to ambient temperature, promoting longer battery life and stable performance.
• Smart protections include reverse polarity protection for battery and solar panels; automatic charge-off and load-off voltages with restore when safe; surge protection for sensitive electronics.
• Multi-function LCD displays real-time data; the unit automatically adapts to 12V/24V by ensuring you connect the battery first so the controller recognizes the correct system type.

Design and reliability

• Industrial-grade master chip delivers precise readings of charging and discharging currents, so you can monitor power generation at a glance.
• Note on hardware: this is a compatible MPPT controller with an energy-saving design and does not use a large transformer coil inside. A 30-day money-back guarantee and 12-month warranty are included.
• Professional after-sales support is available to help with setup, configuration, and troubleshooting anytime you need assistance.

What you get and how to use

Package includes the MPPT solar charge controller and an English user manual. For best results, ensure the panel working voltage stays within the recommended range for your battery type, and follow the connection order: battery first, then solar panels.

Practical use cases

From RVs and boats to remote cabins or off-grid workshops, this controller helps you harvest energy more efficiently and monitor performance on the go. It supports both lead-acid and lithium chemistries, offering flexibility as your storage needs evolve.

Notes and tips

• Operating defaults (charge-off/load-off/restore voltages) are set for 25°C and locked by the CPU procedure; temperature compensation handles ambient changes automatically.
• Place panels where they receive steady sun exposure, keep wiring tidy, and verify the battery is in good condition before use.