Solar Charge Controller for Gel, Sealed, Flooded, and Lithium Batteries

High Tracking Efficiency

The HQST 12V 40 amp solar charge controller utilizes advanced MPPT technology for a fast and stable maximum power point tracking. With a high tracking efficiency of up to 99% and peak conversion efficiency of 98%, this controller maximizes the energy harvested from solar panels to efficiently charge your system. It automatically detects 12V or 24V DC system voltages.

Parallel Charge Function

Capable of working in parallel with up to two controllers (M2420N, M2440N, M4860N) for high power charging, the HQST controller ensures efficient energy use. When using parallel setup, set both controllers to the same battery pack voltage to optimize the charging process. With our negative grounded controller, you get overcharging, over-discharging, overload, overheat, short circuit, and reverse protection, safeguarding your system from potential damage due to faults or installation errors.

LCD Screen Display & Remote Monitoring

Equipped with an LCD screen and LED fault indicators, this 40A solar controller allows you to monitor device operating data and adjust controller parameters in real-time. The built-in Bluetooth module connects to the “ChargePro 2.0” (new version) or “PVChargePro” (old version) app for remote monitoring. Store up to 300 days of historical data, with the Android app requiring location and Bluetooth to be enabled for connection.

Higher Heat Dissipation Efficiency & Full-Load Working

The die-cast aluminum heat sink ensures high heat dissipation efficiency, minimizing power loss due to heat. The controller is filled with gel to improve PCBA cooling and prevent water damage, extending its service life. Featuring premium IC and better PCBA, this controller can operate at full load even in high-temperature environments.

Compatible with Multiple Battery Types

Designed for versatility, the HQST MPPT solar charge controller is compatible with various battery types, including Flooded, AGM, Gel, and Lithium batteries. Users can set their charging parameters via the user mode. The 3-stage charging process includes boost, float, and equalization. Backed by a 3-year warranty and lifetime technical support, we're here to assist you with any questions or concerns.